Drinking water in 30900
For this postcode the responsible water supplier publishes several supply zones. Which of them serves an individual address is not published — below are the values of the zone with the most documented parameters, the remaining 9 underneath.
How to read the share of the parametric value
12 % Share of the parametric value. The proportion of the permitted maximum that the measured value uses — here 12 %, so just over an eighth.
< 10 % * Below the limit of quantification. The substance was not detectable. The mark shows where the detection limit lies relative to the parametric value — the actual share of the parametric value is below that.
Several samples per year: for chemical parameters the mean value is given, for microbiological ones the highest measured value. There the parametric value is zero — a single finding would disappear in the average, and it is precisely that finding which is the information. Which reference applies is stated in the last column of the table.
enercity Hannover gesamt
enercity HannoverAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
Water hardness
12 °dH
Hardness range mittel
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 2,2 mg/l | 50 mg/l | 4 % | Mean |
| Lead | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Mean |
| Escherichia coli (E. coli) | 0 Anzahl/100 ml | 0/100 ml | — | Maximum · Median 0 |
| Sulphate | 91 mg/l | 250 mg/l | 36 % | Mean |
| Sodium | 25 mg/l | 200 mg/l | 13 % | Mean |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Show all recorded parameters (108 — most recent value per parameter)
Microbiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 Anzahl/100 ml | 0/100 ml | — | Maximum · Median 0 |
| Intestinal enterococci | 0 Anzahl/100 ml | 0/100 ml | — | Maximum · Median 0 |
Chemical parameters (54)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | <0,0003 mg/l below limit of quantification | 3 µg/l | < 10 % * | Mean |
| 2,6-Dichlorobenzamide (BAM) | <0,00002 mg/l below limit of quantification | — | — | Mean |
| AMPA | <0,00002 mg/l below limit of quantification | — | — | Mean |
| Antimony | <0,001 mg/l below limit of quantification | 5 µg/l | < 20 % * | Mean |
| Arsenic | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Mean |
| Atrazine | <0,00002 mg/l below limit of quantification | — | — | Mean |
| Bentazone | <0,00002 mg/l below limit of quantification | — | — | Mean |
| Benzene | <0,0001 mg/l below limit of quantification | 1 µg/l | < 10 % * | Mean |
| Benzo(a)pyrene | <0,000003 mg/l below limit of quantification | 10 ng/l | < 30 % * | Mean |
| Bisphenol A | <0,00005 mg/l below limit of quantification | 2.5 µg/l | < 2 % * | Mean |
| Boron | <0,05 mg/l below limit of quantification | 1 mg/l | < 5 % * | Mean |
| Bromacil | <0,000015 mg/l below limit of quantification | — | — | Mean |
| Bromate | <0,0001 mg/l below limit of quantification | 10 µg/l | < 1 % * | Mean |
| Cadmium | <0,0009 mg/l below limit of quantification | 3 µg/l | < 30 % * | Mean |
| Chlorate | <0,02 mg/l below limit of quantification | 70 µg/l | < 29 % * | Mean |
| Chloridazon | <0,00001 mg/l below limit of quantification | — | — | Mean |
| Chlorite | <0,05 mg/l below limit of quantification | 0.2 mg/l | < 25 % * | Mean |
| Chlorotoluron | <0,00001 mg/l below limit of quantification | — | — | Mean |
| Chromium | <0,0005 mg/l below limit of quantification | 25 µg/l | < 2 % * | Mean |
| Copper | 0,003 mg/l | 2 mg/l | 0.2 % | Mean |
| Cyanide | <0,004 mg/l below limit of quantification | 50 µg/l | < 8 % * | Mean |
| Desethylatrazine | <0,00002 mg/l below limit of quantification | — | — | Mean |
| Desethylterbuthylazine | <0,00002 mg/l below limit of quantification | — | — | Mean |
| Desisopropylatrazine | <0,00002 mg/l below limit of quantification | — | — | Mean |
| Dichlorprop-P | <0,00001 mg/l below limit of quantification | — | — | Mean |
| Diuron | <0,00002 mg/l below limit of quantification | — | — | Mean |
| Ethidimuron | <0,00003 mg/l below limit of quantification | — | — | Mean |
| Ethofumesate | <0,00003 mg/l below limit of quantification | — | — | Mean |
| Fluoride | <0,3 mg/l below limit of quantification | 1.5 mg/l | < 20 % * | Mean |
| Glyphosate | <0,00001 mg/l below limit of quantification | — | — | Mean |
| Isoproturon | <0,00002 mg/l below limit of quantification | — | — | Mean |
| Lead | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Mean |
| MCPA | <0,00003 mg/l below limit of quantification | — | — | Mean |
| Mecoprop-P | <0,00001 mg/l below limit of quantification | — | — | Mean |
| Mercury | <0,0003 mg/l below limit of quantification | 1 µg/l | < 30 % * | Mean |
| Metamitron | <0,00003 mg/l below limit of quantification | — | — | Mean |
| Metazachlor | <0,00002 mg/l below limit of quantification | — | — | Mean |
| Metolachlor | <0,00002 mg/l below limit of quantification | — | — | Mean |
| Metoxuron | <0,000015 mg/l below limit of quantification | — | — | Mean |
| Metribuzin | <0,00003 mg/l below limit of quantification | — | — | Mean |
| Nickel | <0,001 mg/l below limit of quantification | 20 µg/l | < 5 % * | Mean |
| Nitrate | 2,2 mg/l | 50 mg/l | 4 % | Mean |
| Nitrite | <0,03 mg/l below limit of quantification | 0.5 mg/l | < 6 % * | Mean |
| Oxadixyl | <0,00003 mg/l below limit of quantification | — | — | Mean |
| Pesticides | <BG mg/l not detectable | 0.1 µg/l | — | Mean |
| Pesticides — Total | <BG mg/l not detectable | 0.5 µg/l | — | Mean |
| Polycyclic aromatic hydrocarbons | <0,00003 mg/l below limit of quantification | 0.1 µg/l | < 30 % * | Mean |
| Selenium | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Mean |
| Simazine | <0,00002 mg/l below limit of quantification | — | — | Mean |
| Tebuconazole | <0,000015 mg/l below limit of quantification | — | — | Mean |
| Terbuthylazine | <0,00002 mg/l below limit of quantification | — | — | Mean |
| Tetrachloroethene and Trichloroethene (sum) | <0,0002 mg/l below limit of quantification | 10 µg/l | < 2 % * | Mean |
| Trihalomethanes — Total | <0,003 mg/l below limit of quantification | 50 µg/l | < 6 % * | Mean |
| Uranium | <0,0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | Mean |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
PFAS (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Trifluoroacetic acid (TFA) | 0,00113 mg/l | 60 µg/l UBA guide value | 2 % | Mean |
For trifluoroacetic acid (TFA), the German Drinking Water Ordinance does not specify a parametric value. The comparison is therefore made with the guide value of 60 µg/l issued by the Umweltbundesamt, which has replaced the earlier health-related guidance value of 3 µg/l. A guide value is not a legal maximum but a health-related classification.
Metabolites (19)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1H-1,2,4-Triazole | <0,00001 mg/l below limit of quantification | — | — | Mean |
| Chlorothalonil M12 | 0,00004 mg/l | — | — | Mean |
| Chlorothalonil M4 | 0,000212 mg/l | — | — | Mean |
| Desphenyl-chloridazon | 0,00019 mg/l | — | — | Mean |
| Dimethachlor acid CGA 50266 | <0,000010 mg/l below limit of quantification | — | — | Mean |
| Dimethachlor sulfonic acid CGA 354742 | <0,000020 mg/l below limit of quantification | — | — | Mean |
| Dimethachlor sulfonic acid CGA 369873 | <0,000020 mg/l below limit of quantification | — | — | Mean |
| Dimethenamid sulfonic acid M27 | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Dimethylsulfamide (DMS) | <0,000020 mg/l below limit of quantification | — | — | Mean |
| Flufenacet sulfonic acid M2 | <0,000010 mg/l below limit of quantification | — | — | Mean |
| Metalaxyl carboxylic acid CGA 62826 | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Metazachlor metabolite BH 479-11 | <0,000010 mg/l below limit of quantification | — | — | Mean |
| Metazachlor metabolite BH 479-9 | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Metazachlor oxalic acid BH 479-4 | 0,00005 mg/l | — | — | Mean |
| Metazachlor sulfonic acid BH 479-8 | 0,00013 mg/l | — | — | Mean |
| Methyl-desphenyl-chloridazon | 0,000026 mg/l | — | — | Mean |
| S-metolachlor acid CGA 51202/351916 | 0,00009 mg/l | — | — | Mean |
| S-metolachlor sulfonic acid CGA 380168/354743 | 0,00013 mg/l | — | — | Mean |
| S-metolachlor sulfonic acid NOA 413173 | 0,00005 mg/l | — | — | Mean |
Indicator parameters (20)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | <0,05 mg/l below limit of quantification | 0.2 mg/l | < 25 % * | Mean |
| Ammonium | <0,04 mg/l below limit of quantification | 0.5 mg/l | < 8 % * | Mean |
| Calcite dissolution capacity | -2,50 mg/l | 5 mg/l CaCO3 | — | Mean |
| Chloride | 48 mg/l | 250 mg/l | 19 % | Mean |
| Clostridium perfringens (including spores) | 0 Anzahl/100 ml | 0/100 ml | — | Maximum · Median 0 |
| Coliform bacteria | 1 Anzahl/100 ml | 0/100 ml | above the parametric value — this parameter must not be detectable | Maximum · Median 0 |
| Colony count 22 °C | 1 Anzahl/ml | ohne anormale Veränderung | — | Mean |
| Colony count 36 °C | 0 Anzahl/ml | ohne anormale Veränderung | — | Mean |
| Colour | 0,20 1/m | 0.5 m⁻¹ | — | Mean |
| Conductivity (25 °C) | 561 µS/cm | 2,790 µS/cm | — | Mean |
| Iron | <0,02 mg/l below limit of quantification | 0.2 mg/l | < 10 % * | Mean |
| Manganese | <0,015 mg/l below limit of quantification | 50 µg/l | < 30 % * | Mean |
| Odour | normal | für den Verbraucher annehmbar | — | Mean |
| pH | 7,80 --- | 6,5–9,5 | — | Mean |
| Sodium | 25 mg/l | 200 mg/l | 13 % | Mean |
| Sulphate | 91 mg/l | 250 mg/l | 36 % | Mean |
| Taste | normal | für den Verbraucher annehmbar | — | Mean |
| Temperature | 12,3 °C | — | — | Mean |
| Total organic carbon (TOC) | 5,0 mg/l | ohne anormale Veränderung | — | Mean |
| Turbidity | <0,1 NTU below limit of quantification | 1 NTU | — | Mean |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
An exceedance of a parametric value does not automatically mean a health risk; the statutory parametric values include safety margins. Assessment and any measures are the responsibility of the competent health authority of the respective country.
Further parameters (12)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Acid capacity to pH 4.3 | 2,34 mmol/l | — | — | Mean |
| Base capacity to pH 8.2 | 0,08 mmol/l | — | — | Mean |
| Calcium | 76 mg/l | — | — | Mean |
| Carbonate hardness | 6,4 °dH | — | — | Mean |
| Hardness range (WRMG) | mittel --- | — | — | Mean |
| Hydrogen carbonate | 3,7 mg/l | — | — | Mean |
| Magnesium | 5,8 mg/l | — | — | Mean |
| Phosphate | <0,3 mg/l below limit of quantification | — | — | Mean |
| Potassium | 3,7 mg/l | — | — | Mean |
| Silicate / silicic acid | 5,0 mg/l | — | — | Mean |
| Spectral absorption coefficient 254 nm (SAC 254) | 8,3 1/m | — | — | Mean |
| Total hardness | 12,0 °dH | — | — | Mean |
Values taken unchanged from the publications linked below — for each parameter the most recent recorded value. „—" in the parametric value column: no currently valid legal parametric value is stored in our database for this parameter; the parameter register with all parametric values is being expanded continuously.
Source: https://www.enercity.de/assets/cms/enercity-de/Privatkunden/Produkte/Wasser/Downloads/Qualitaet/Trinkwasseranalyse-enercity.pdf · Erstellt im Februar 2026 aus Untersuchungen von Januar bis Dezember des Vorjahres · Januar bis Dezember des Vorjahres · retrieved on 11/07/2026
Show 9 more supply zones in this postcode
wedemark gesamt
enercity HannoverAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
Water hardness
11.5 °dH
Hardness range mittel
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 3,1 mg/l | 50 mg/l | 6 % | Mean |
| Lead | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Mean |
| Escherichia coli (E. coli) | 0 Anzahl/100 ml | 0/100 ml | — | Maximum · Median 0 |
| Sulphate | 85 mg/l | 250 mg/l | 34 % | Mean |
| Sodium | 24 mg/l | 200 mg/l | 12 % | Mean |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Show all recorded parameters (103 — most recent value per parameter)
Microbiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 Anzahl/100 ml | 0/100 ml | — | Maximum · Median 0 |
| Intestinal enterococci | 0 Anzahl/100 ml | 0/100 ml | — | Maximum · Median 0 |
Chemical parameters (50)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | <0,0003 mg/l below limit of quantification | 3 µg/l | < 10 % * | Mean |
| 2,6-Dichlorobenzamide (BAM) | <0,000025 mg/l below limit of quantification | — | — | Mean |
| AMPA | <0,00005 mg/l below limit of quantification | — | — | Mean |
| Antimony | <0,001 mg/l below limit of quantification | 5 µg/l | < 20 % * | Mean |
| Arsenic | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Mean |
| Atrazine | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Bentazone | <0,00002 mg/l below limit of quantification | — | — | Mean |
| Benzene | <0,0001 mg/l below limit of quantification | 1 µg/l | < 10 % * | Mean |
| Benzo(a)pyrene | <0,000003 mg/l below limit of quantification | 10 ng/l | < 30 % * | Mean |
| Bisphenol A | <0,00050 mg/l below limit of quantification | 2.5 µg/l | < 20 % * | Mean |
| Boron | <0,05 mg/l below limit of quantification | 1 mg/l | < 5 % * | Mean |
| Bromacil | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Bromate | <0,0025 mg/l below limit of quantification | 10 µg/l | < 25 % * | Mean |
| Cadmium | <0,001 mg/l below limit of quantification | 3 µg/l | < 33 % * | Mean |
| Chloridazon | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Chlorotoluron | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Chromium | <0,0005 mg/l below limit of quantification | 25 µg/l | < 2 % * | Mean |
| Copper | 0,004225 mg/l | 2 mg/l | 0.2 % | Mean |
| Cyanide | <0,004 mg/l below limit of quantification | 50 µg/l | < 8 % * | Mean |
| Desethylatrazine | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Desethylterbuthylazine | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Desisopropylatrazine | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Dichlorprop-P | <0,00002 mg/l below limit of quantification | — | — | Mean |
| Diuron | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Ethidimuron | <0,00003 mg/l below limit of quantification | — | — | Mean |
| Ethofumesate | <0,00003 mg/l below limit of quantification | — | — | Mean |
| Fluoride | <0,3 mg/l below limit of quantification | 1.5 mg/l | < 20 % * | Mean |
| Glyphosate | <0,00005 mg/l below limit of quantification | — | — | Mean |
| Isoproturon | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Lead | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Mean |
| MCPA | <0,00003 mg/l below limit of quantification | — | — | Mean |
| Mecoprop-P | <0,00002 mg/l below limit of quantification | — | — | Mean |
| Mercury | <0,0003 mg/l below limit of quantification | 1 µg/l | < 30 % * | Mean |
| Metamitron | <0,00003 mg/l below limit of quantification | — | — | Mean |
| Metazachlor | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Metolachlor | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Metoxuron | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Metribuzin | <0,00003 mg/l below limit of quantification | — | — | Mean |
| Nickel | <0,001 mg/l below limit of quantification | 20 µg/l | < 5 % * | Mean |
| Nitrate | 3,1 mg/l | 50 mg/l | 6 % | Mean |
| Nitrite | <0,03 mg/l below limit of quantification | 0.5 mg/l | < 6 % * | Mean |
| Oxadixyl | <0,00003 mg/l below limit of quantification | — | — | Mean |
| Polycyclic aromatic hydrocarbons | <0,00003 mg/l below limit of quantification | 0.1 µg/l | < 30 % * | Mean |
| Selenium | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Mean |
| Simazine | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Tebuconazole | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Terbuthylazine | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Tetrachloroethene and Trichloroethene (sum) | <0,0002 mg/l below limit of quantification | 10 µg/l | < 2 % * | Mean |
| Trihalomethanes — Total | <0,003 mg/l below limit of quantification | 50 µg/l | < 6 % * | Mean |
| Uranium | <0,0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | Mean |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
PFAS (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Trifluoroacetic acid (TFA) | 0,00068 mg/l | 60 µg/l UBA guide value | 1 % | Mean |
For trifluoroacetic acid (TFA), the German Drinking Water Ordinance does not specify a parametric value. The comparison is therefore made with the guide value of 60 µg/l issued by the Umweltbundesamt, which has replaced the earlier health-related guidance value of 3 µg/l. A guide value is not a legal maximum but a health-related classification.
Metabolites (19)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1H-1,2,4-Triazole | <0,00005 mg/l below limit of quantification | — | — | Mean |
| Chlorothalonil M12 | <0,00002 mg/l below limit of quantification | — | — | Mean |
| Chlorothalonil M4 | 0,000105 mg/l | — | — | Mean |
| Desphenyl-chloridazon | 0,00015 mg/l | — | — | Mean |
| Dimethachlor acid CGA 50266 | <0,00002 mg/l below limit of quantification | — | — | Mean |
| Dimethachlor sulfonic acid CGA 354742 | <0,00002 mg/l below limit of quantification | — | — | Mean |
| Dimethachlor sulfonic acid CGA 369873 | <0,000020 mg/l below limit of quantification | — | — | Mean |
| Dimethenamid sulfonic acid M27 | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Dimethylsulfamide (DMS) | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Flufenacet sulfonic acid M2 | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Metalaxyl carboxylic acid CGA 62826 | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Metazachlor metabolite BH 479-11 | <0,00002 mg/l below limit of quantification | — | — | Mean |
| Metazachlor metabolite BH 479-9 | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Metazachlor oxalic acid BH 479-4 | <0,000010 mg/l below limit of quantification | — | — | Mean |
| Metazachlor sulfonic acid BH 479-8 | 0,00010 mg/l | — | — | Mean |
| Methyl-desphenyl-chloridazon | 0,000019 mg/l | — | — | Mean |
| S-metolachlor acid CGA 51202/351916 | <0,000010 mg/l below limit of quantification | — | — | Mean |
| S-metolachlor sulfonic acid CGA 380168/354743 | 0,00010 mg/l | — | — | Mean |
| S-metolachlor sulfonic acid NOA 413173 | 0,00005 mg/l | — | — | Mean |
Indicator parameters (19)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | <0,050 mg/l below limit of quantification | 0.2 mg/l | < 25 % * | Mean |
| Ammonium | <0,04 mg/l below limit of quantification | 0.5 mg/l | < 8 % * | Mean |
| Calcite dissolution capacity | -1,05 mg/l | 5 mg/l CaCO3 | — | Mean |
| Chloride | 44 mg/l | 250 mg/l | 18 % | Mean |
| Clostridium perfringens (including spores) | 0 Anzahl/100 ml | 0/100 ml | — | Maximum · Median 0 |
| Coliform bacteria | 0 Anzahl/100 ml | 0/100 ml | — | Maximum · Median 0 |
| Colony count 22 °C | 0 Anzahl/ml | ohne anormale Veränderung | — | Mean |
| Colony count 36 °C | 1 Anzahl/ml | ohne anormale Veränderung | — | Mean |
| Colour | 0,17 1/m | 0.5 m⁻¹ | — | Mean |
| Conductivity (25 °C) | 548 µS/cm | 2,790 µS/cm | — | Mean |
| Iron | <0,020 mg/l below limit of quantification | 0.2 mg/l | < 10 % * | Mean |
| Manganese | <0,015 mg/l below limit of quantification | 50 µg/l | < 30 % * | Mean |
| Odour | normal | für den Verbraucher annehmbar | — | Mean |
| pH | 7,76 --- | 6,5–9,5 | — | Mean |
| Sodium | 24 mg/l | 200 mg/l | 12 % | Mean |
| Sulphate | 85 mg/l | 250 mg/l | 34 % | Mean |
| Taste | normal | für den Verbraucher annehmbar | — | Mean |
| Temperature | 12,7 °C | — | — | Mean |
| Turbidity | <0,10 NTU below limit of quantification | 1 NTU | — | Mean |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Further parameters (12)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Acid capacity to pH 4.3 | 2,10 mmol/l | — | — | Mean |
| Base capacity to pH 8.2 | 0,08 mmol/l | — | — | Mean |
| Calcium | 72 mg/l | — | — | Mean |
| Carbonate hardness | 6,4 °dH | — | — | Mean |
| Hardness range (WRMG) | mittel --- | — | — | Mean |
| Hydrogen carbonate | 3,6 mg/l | — | — | Mean |
| Magnesium | 5,2 mg/l | — | — | Mean |
| Phosphate | <0,3 mg/l below limit of quantification | — | — | Mean |
| Potassium | 3,5 mg/l | — | — | Mean |
| Silicate / silicic acid | 4,7 mg/l | — | — | Mean |
| Spectral absorption coefficient 254 nm (SAC 254) | 7,4 1/m | — | — | Mean |
| Total hardness | 11,5 °dH | — | — | Mean |
Values taken unchanged from the publications linked below — for each parameter the most recent recorded value. „—" in the parametric value column: no currently valid legal parametric value is stored in our database for this parameter; the parameter register with all parametric values is being expanded continuously.
Source: https://www.wvn.de/files/Chemie_2025_enercity.pdf · März 2025 · Januar bis Dezember des Vorjahres · retrieved on 11/07/2026
laatzen gesamt
enercity HannoverAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
Water hardness
12 °dH
Hardness range mittel
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 2,2 mg/l | 50 mg/l | 4 % | Mean |
| Lead | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Mean |
| Escherichia coli (E. coli) | 0 Anzahl/100 ml | 0/100 ml | — | Maximum · Median 0 |
| Sulphate | 91 mg/l | 250 mg/l | 36 % | Mean |
| Sodium | 25 mg/l | 200 mg/l | 13 % | Mean |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Show all recorded parameters (108 — most recent value per parameter)
Microbiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 Anzahl/100 ml | 0/100 ml | — | Maximum · Median 0 |
| Intestinal enterococci | 0 Anzahl/100 ml | 0/100 ml | — | Maximum · Median 0 |
Chemical parameters (54)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | <0,0003 mg/l below limit of quantification | 3 µg/l | < 10 % * | Mean |
| 2,6-Dichlorobenzamide (BAM) | <0,00002 mg/l below limit of quantification | — | — | Mean |
| AMPA | <0,00002 mg/l below limit of quantification | — | — | Mean |
| Antimony | <0,001 mg/l below limit of quantification | 5 µg/l | < 20 % * | Mean |
| Arsenic | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Mean |
| Atrazine | <0,00002 mg/l below limit of quantification | — | — | Mean |
| Bentazone | <0,00002 mg/l below limit of quantification | — | — | Mean |
| Benzene | <0,0001 mg/l below limit of quantification | 1 µg/l | < 10 % * | Mean |
| Benzo(a)pyrene | <0,000003 mg/l below limit of quantification | 10 ng/l | < 30 % * | Mean |
| Bisphenol A | <0,00005 mg/l below limit of quantification | 2.5 µg/l | < 2 % * | Mean |
| Boron | <0,05 mg/l below limit of quantification | 1 mg/l | < 5 % * | Mean |
| Bromacil | <0,000015 mg/l below limit of quantification | — | — | Mean |
| Bromate | <0,0001 mg/l below limit of quantification | 10 µg/l | < 1 % * | Mean |
| Cadmium | <0,0009 mg/l below limit of quantification | 3 µg/l | < 30 % * | Mean |
| Chlorate | <0,02 mg/l below limit of quantification | 70 µg/l | < 29 % * | Mean |
| Chloridazon | <0,00001 mg/l below limit of quantification | — | — | Mean |
| Chlorite | <0,05 mg/l below limit of quantification | 0.2 mg/l | < 25 % * | Mean |
| Chlorotoluron | <0,00001 mg/l below limit of quantification | — | — | Mean |
| Chromium | <0,0005 mg/l below limit of quantification | 25 µg/l | < 2 % * | Mean |
| Copper | 0,003 mg/l | 2 mg/l | 0.2 % | Mean |
| Cyanide | <0,004 mg/l below limit of quantification | 50 µg/l | < 8 % * | Mean |
| Desethylatrazine | <0,00002 mg/l below limit of quantification | — | — | Mean |
| Desethylterbuthylazine | <0,00002 mg/l below limit of quantification | — | — | Mean |
| Desisopropylatrazine | <0,00002 mg/l below limit of quantification | — | — | Mean |
| Dichlorprop-P | <0,00001 mg/l below limit of quantification | — | — | Mean |
| Diuron | <0,00002 mg/l below limit of quantification | — | — | Mean |
| Ethidimuron | <0,00003 mg/l below limit of quantification | — | — | Mean |
| Ethofumesate | <0,00003 mg/l below limit of quantification | — | — | Mean |
| Fluoride | <0,3 mg/l below limit of quantification | 1.5 mg/l | < 20 % * | Mean |
| Glyphosate | <0,00001 mg/l below limit of quantification | — | — | Mean |
| Isoproturon | <0,00002 mg/l below limit of quantification | — | — | Mean |
| Lead | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Mean |
| MCPA | <0,00003 mg/l below limit of quantification | — | — | Mean |
| Mecoprop-P | <0,00001 mg/l below limit of quantification | — | — | Mean |
| Mercury | <0,0003 mg/l below limit of quantification | 1 µg/l | < 30 % * | Mean |
| Metamitron | <0,00003 mg/l below limit of quantification | — | — | Mean |
| Metazachlor | <0,00002 mg/l below limit of quantification | — | — | Mean |
| Metolachlor | <0,00002 mg/l below limit of quantification | — | — | Mean |
| Metoxuron | <0,000015 mg/l below limit of quantification | — | — | Mean |
| Metribuzin | <0,00003 mg/l below limit of quantification | — | — | Mean |
| Nickel | <0,001 mg/l below limit of quantification | 20 µg/l | < 5 % * | Mean |
| Nitrate | 2,2 mg/l | 50 mg/l | 4 % | Mean |
| Nitrite | <0,03 mg/l below limit of quantification | 0.5 mg/l | < 6 % * | Mean |
| Oxadixyl | <0,00003 mg/l below limit of quantification | — | — | Mean |
| Pesticides | <BG mg/l not detectable | 0.1 µg/l | — | Mean |
| Pesticides — Total | <BG mg/l not detectable | 0.5 µg/l | — | Mean |
| Polycyclic aromatic hydrocarbons | <0,00003 mg/l below limit of quantification | 0.1 µg/l | < 30 % * | Mean |
| Selenium | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Mean |
| Simazine | <0,00002 mg/l below limit of quantification | — | — | Mean |
| Tebuconazole | <0,000015 mg/l below limit of quantification | — | — | Mean |
| Terbuthylazine | <0,00002 mg/l below limit of quantification | — | — | Mean |
| Tetrachloroethene and Trichloroethene (sum) | <0,0002 mg/l below limit of quantification | 10 µg/l | < 2 % * | Mean |
| Trihalomethanes — Total | <0,003 mg/l below limit of quantification | 50 µg/l | < 6 % * | Mean |
| Uranium | <0,0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | Mean |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
PFAS (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Trifluoroacetic acid (TFA) | 0,00113 mg/l | 60 µg/l UBA guide value | 2 % | Mean |
For trifluoroacetic acid (TFA), the German Drinking Water Ordinance does not specify a parametric value. The comparison is therefore made with the guide value of 60 µg/l issued by the Umweltbundesamt, which has replaced the earlier health-related guidance value of 3 µg/l. A guide value is not a legal maximum but a health-related classification.
Metabolites (19)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1H-1,2,4-Triazole | <0,00001 mg/l below limit of quantification | — | — | Mean |
| Chlorothalonil M12 | 0,00004 mg/l | — | — | Mean |
| Chlorothalonil M4 | 0,000212 mg/l | — | — | Mean |
| Desphenyl-chloridazon | 0,00019 mg/l | — | — | Mean |
| Dimethachlor acid CGA 50266 | <0,000010 mg/l below limit of quantification | — | — | Mean |
| Dimethachlor sulfonic acid CGA 354742 | <0,000020 mg/l below limit of quantification | — | — | Mean |
| Dimethachlor sulfonic acid CGA 369873 | <0,000020 mg/l below limit of quantification | — | — | Mean |
| Dimethenamid sulfonic acid M27 | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Dimethylsulfamide (DMS) | <0,000020 mg/l below limit of quantification | — | — | Mean |
| Flufenacet sulfonic acid M2 | <0,000010 mg/l below limit of quantification | — | — | Mean |
| Metalaxyl carboxylic acid CGA 62826 | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Metazachlor metabolite BH 479-11 | <0,000010 mg/l below limit of quantification | — | — | Mean |
| Metazachlor metabolite BH 479-9 | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Metazachlor oxalic acid BH 479-4 | 0,00005 mg/l | — | — | Mean |
| Metazachlor sulfonic acid BH 479-8 | 0,00013 mg/l | — | — | Mean |
| Methyl-desphenyl-chloridazon | 0,000026 mg/l | — | — | Mean |
| S-metolachlor acid CGA 51202/351916 | 0,00009 mg/l | — | — | Mean |
| S-metolachlor sulfonic acid CGA 380168/354743 | 0,00013 mg/l | — | — | Mean |
| S-metolachlor sulfonic acid NOA 413173 | 0,00005 mg/l | — | — | Mean |
Indicator parameters (20)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | <0,05 mg/l below limit of quantification | 0.2 mg/l | < 25 % * | Mean |
| Ammonium | <0,04 mg/l below limit of quantification | 0.5 mg/l | < 8 % * | Mean |
| Calcite dissolution capacity | -2,50 mg/l | 5 mg/l CaCO3 | — | Mean |
| Chloride | 48 mg/l | 250 mg/l | 19 % | Mean |
| Clostridium perfringens (including spores) | 0 Anzahl/100 ml | 0/100 ml | — | Maximum · Median 0 |
| Coliform bacteria | 1 Anzahl/100 ml | 0/100 ml | above the parametric value — this parameter must not be detectable | Maximum · Median 0 |
| Colony count 22 °C | 1 Anzahl/ml | ohne anormale Veränderung | — | Mean |
| Colony count 36 °C | 0 Anzahl/ml | ohne anormale Veränderung | — | Mean |
| Colour | 0,20 1/m | 0.5 m⁻¹ | — | Mean |
| Conductivity (25 °C) | 561 µS/cm | 2,790 µS/cm | — | Mean |
| Iron | <0,02 mg/l below limit of quantification | 0.2 mg/l | < 10 % * | Mean |
| Manganese | <0,015 mg/l below limit of quantification | 50 µg/l | < 30 % * | Mean |
| Odour | normal | für den Verbraucher annehmbar | — | Mean |
| pH | 7,80 --- | 6,5–9,5 | — | Mean |
| Sodium | 25 mg/l | 200 mg/l | 13 % | Mean |
| Sulphate | 91 mg/l | 250 mg/l | 36 % | Mean |
| Taste | normal | für den Verbraucher annehmbar | — | Mean |
| Temperature | 12,3 °C | — | — | Mean |
| Total organic carbon (TOC) | 5,0 mg/l | ohne anormale Veränderung | — | Mean |
| Turbidity | <0,1 NTU below limit of quantification | 1 NTU | — | Mean |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
An exceedance of a parametric value does not automatically mean a health risk; the statutory parametric values include safety margins. Assessment and any measures are the responsibility of the competent health authority of the respective country.
Further parameters (12)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Acid capacity to pH 4.3 | 2,34 mmol/l | — | — | Mean |
| Base capacity to pH 8.2 | 0,08 mmol/l | — | — | Mean |
| Calcium | 76 mg/l | — | — | Mean |
| Carbonate hardness | 6,4 °dH | — | — | Mean |
| Hardness range (WRMG) | mittel --- | — | — | Mean |
| Hydrogen carbonate | 3,7 mg/l | — | — | Mean |
| Magnesium | 5,8 mg/l | — | — | Mean |
| Phosphate | <0,3 mg/l below limit of quantification | — | — | Mean |
| Potassium | 3,7 mg/l | — | — | Mean |
| Silicate / silicic acid | 5,0 mg/l | — | — | Mean |
| Spectral absorption coefficient 254 nm (SAC 254) | 8,3 1/m | — | — | Mean |
| Total hardness | 12,0 °dH | — | — | Mean |
Values taken unchanged from the publications linked below — for each parameter the most recent recorded value. „—" in the parametric value column: no currently valid legal parametric value is stored in our database for this parameter; the parameter register with all parametric values is being expanded continuously.
Source: https://www.enercity.de/assets/cms/enercity-de/Privatkunden/Produkte/Wasser/Downloads/Qualitaet/Trinkwasseranalyse-enercity.pdf · Erstellt im Februar 2026 aus Untersuchungen von Januar bis Dezember des Vorjahres · Januar bis Dezember des Vorjahres · retrieved on 25/07/2026
hemmingen gesamt
enercity HannoverAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
These values are more than a year old. The most recent analysis the water supplier has published for this zone dates from 31/12/2023. We have no newer values — which is why we show the latest available ones rather than none at all. They say nothing about how the water has changed since then.
Water hardness
13 °dH
Hardness range mittel
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 3,0 mg/l | 50 mg/l | 6 % | Mean |
| Lead | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Mean |
| Sulphate | 89 mg/l | 250 mg/l | 36 % | Mean |
| Sodium | 27 mg/l | 200 mg/l | 13 % | Mean |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Show all recorded parameters (86 — most recent value per parameter)
Chemical parameters (53)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | <0,0003 mg/l below limit of quantification | 3 µg/l | < 10 % * | Mean |
| 2,6-Dichlorobenzamide (BAM) | <0,000025 mg/l below limit of quantification | — | — | Mean |
| AMPA | <0,00003 mg/l below limit of quantification | — | — | Mean |
| Antimony | <0,001 mg/l below limit of quantification | 5 µg/l | < 20 % * | Mean |
| Arsenic | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Mean |
| Atrazine | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Bentazone | <0,00002 mg/l below limit of quantification | — | — | Mean |
| Benzene | <0,0001 mg/l below limit of quantification | 1 µg/l | < 10 % * | Mean |
| Benzo(a)pyrene | <0,000003 mg/l below limit of quantification | 10 ng/l | < 30 % * | Mean |
| Boron | <0,05 mg/l below limit of quantification | 1 mg/l | < 5 % * | Mean |
| Bromacil | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Bromate | <0,003 mg/l below limit of quantification | 10 µg/l | < 30 % * | Mean |
| Bromoxynil | <0,00002 mg/l below limit of quantification | — | — | Mean |
| Cadmium | <0,0009 mg/l below limit of quantification | 3 µg/l | < 30 % * | Mean |
| Chloridazon | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Chlorotoluron | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Chromium | <0,0005 mg/l below limit of quantification | 25 µg/l | < 2 % * | Mean |
| Copper | 0,007 mg/l | 2 mg/l | 0.4 % | Mean |
| Cyanide | <0,004 mg/l below limit of quantification | 50 µg/l | < 8 % * | Mean |
| Desethylatrazine | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Desethylterbuthylazine | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Desisopropylatrazine | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Dichlorprop | <0,00002 mg/l below limit of quantification | — | — | Mean |
| Diflufenican | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Diuron | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Ethidimuron | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Ethofumesate | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Fluoride | 0,12 mg/l | 1.5 mg/l | 8 % | Mean |
| Glyphosate | <0,00003 mg/l below limit of quantification | — | — | Mean |
| Isoproturon | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Lead | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Mean |
| MCPA | <0,00002 mg/l below limit of quantification | — | — | Mean |
| Mecoprop | <0,00002 mg/l below limit of quantification | — | — | Mean |
| Mercury | <0,0002 mg/l below limit of quantification | 1 µg/l | < 20 % * | Mean |
| Metalaxyl | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Metamitron | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Metazachlor | 0,00011 mg/l | — | — | Mean |
| Metazachlor acid | 0,00009 mg/l | — | — | Mean |
| Methabenzthiazuron | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Metolachlor acid | 0,00008 mg/l | — | — | Mean |
| Metoxuron | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Metribuzin | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Nickel | 0,002 mg/l | 20 µg/l | 10 % | Mean |
| Nitrate | 3,0 mg/l | 50 mg/l | 6 % | Mean |
| Nitrite | <0,03 mg/l below limit of quantification | 0.5 mg/l | < 6 % * | Mean |
| Oxadixyl | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Polycyclic aromatic hydrocarbons | <0,00003 mg/l below limit of quantification | 0.1 µg/l | < 30 % * | Mean |
| Selenium | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Mean |
| Simazine | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Terbuthylazine | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Tetrachloroethene and Trichloroethene (sum) | <0,0002 mg/l below limit of quantification | 10 µg/l | < 2 % * | Mean |
| Trihalomethanes — Total | 0,0018 mg/l | 50 µg/l | 4 % | Mean |
| Uranium | <0,0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | Mean |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
PFAS (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Trifluoroacetic acid (TFA) | 0,00082 mg/l | 60 µg/l UBA guide value | 1 % | Mean |
For trifluoroacetic acid (TFA), the German Drinking Water Ordinance does not specify a parametric value. The comparison is therefore made with the guide value of 60 µg/l issued by the Umweltbundesamt, which has replaced the earlier health-related guidance value of 3 µg/l. A guide value is not a legal maximum but a health-related classification.
Metabolites (5)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1H-1,2,4-Triazole | <0,00003 mg/l below limit of quantification | — | — | Mean |
| Desphenyl-chloridazon | 0,00018 mg/l | — | — | Mean |
| Dimethachlor acid CGA 50266 | <0,00002 mg/l below limit of quantification | — | — | Mean |
| Dimethachlor sulfonic acid CGA 354742 | <0,00002 mg/l below limit of quantification | — | — | Mean |
| Methyl-desphenyl-chloridazon | 0,00003 mg/l | — | — | Mean |
Indicator parameters (15)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | <0,05 mg/l below limit of quantification | 0.2 mg/l | < 25 % * | Mean |
| Ammonium | <0,04 mg/l below limit of quantification | 0.5 mg/l | < 8 % * | Mean |
| Calcite dissolution capacity | <1 mg/l below limit of quantification | 5 mg/l CaCO3 | — | Mean |
| Chloride | 46 mg/l | 250 mg/l | 18 % | Mean |
| Colour | 0,18 1/m | 0.5 m⁻¹ | — | Mean |
| Conductivity (25 °C) | 554 µS/cm | 2,790 µS/cm | — | Mean |
| Iron | <0,02 mg/l below limit of quantification | 0.2 mg/l | < 10 % * | Mean |
| Manganese | <0,01 mg/l below limit of quantification | 50 µg/l | < 20 % * | Mean |
| Odour | normal | für den Verbraucher annehmbar | — | Mean |
| pH | 7,70 --- | 6,5–9,5 | — | Mean |
| Sodium | 27 mg/l | 200 mg/l | 13 % | Mean |
| Sulphate | 89 mg/l | 250 mg/l | 36 % | Mean |
| Taste | normal | für den Verbraucher annehmbar | — | Mean |
| Temperature | 12,3 °C | — | — | Mean |
| Turbidity | 0,14 NTU | 1 NTU | — | Mean |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Further parameters (12)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Acid capacity to pH 4.3 | 2,27 mmol/l | — | — | Mean |
| Base capacity to pH 8.2 | 0,08 mmol/l | — | — | Mean |
| Calcium | 81 mg/l | — | — | Mean |
| Carbonate hardness | 6,4 °dH | — | — | Mean |
| Hardness range (WRMG) | mittel | — | — | Mean |
| Hydrogen carbonate | 3,5 mg/l | — | — | Mean |
| Magnesium | 5,8 mg/l | — | — | Mean |
| Phosphate | <0,2 mg/l below limit of quantification | — | — | Mean |
| Potassium | 3,3 mg/l | — | — | Mean |
| Silicate / silicic acid | 5,1 mg/l | — | — | Mean |
| Spectral absorption coefficient 254 nm (SAC 254) | 7,5 1/m | — | — | Mean |
| Total hardness | 13 °dH | — | — | Mean |
Values taken unchanged from the publications linked below — for each parameter the most recent recorded value. „—" in the parametric value column: no currently valid legal parametric value is stored in our database for this parameter; the parameter register with all parametric values is being expanded continuously.
Source: https://www.enercity.de/assets/cms/enercity-de/Privatkunden/Produkte/Wasser/Downloads/Qualitaet/trinkwasseranalyse-enercity-wasser.pdf · März 2023 · Januar bis Dezember des Vorjahres · retrieved on 11/07/2026
WW Ramlingen / Reinwasser
Wasserverband Nordhannover (WVN)Assigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
These values are more than a year old. The most recent analysis the water supplier has published for this zone dates from 31/12/2024. We have no newer values — which is why we show the latest available ones rather than none at all. They say nothing about how the water has changed since then.
Water hardness
6.4 °dH
Hardness range weich
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 2,1 mg/l | 50 mg/l | 4 % | Mean |
| Lead | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Mean |
| Escherichia coli (E. coli) | 0 / 100 ml | 0/100 ml | — | Maximum · Median 0 |
| Sulphate | 86,1 mg/l | 250 mg/l | 34 % | Mean |
| Sodium | 1,268 mmol/l | 200 mg/l | — | Mean |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Show all recorded parameters (64 — most recent value per parameter)
Microbiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 / 100 ml | 0/100 ml | — | Maximum · Median 0 |
| Intestinal enterococci | 0 / 100 ml | 0/100 ml | — | Maximum · Median 0 |
Chemical parameters (28)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | <0,0001 mg/l below limit of quantification | 3 µg/l | < 3 % * | Mean |
| 2,6-Dichlorobenzamide (BAM) | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Antimony | <0,0005 mg/l below limit of quantification | 5 µg/l | < 10 % * | Mean |
| Arsenic | <0,0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | Mean |
| Benzene | <0,0001 mg/l below limit of quantification | 1 µg/l | < 10 % * | Mean |
| Benzo(a)pyrene | <0,00001 mg/l below limit of quantification | 10 ng/l | < 100 % * | Mean |
| Boron | <0,05 mg/l below limit of quantification | 1 mg/l | < 5 % * | Mean |
| Bromate | <0,01 mg/l below limit of quantification | 10 µg/l | < 100 % * | Mean |
| Cadmium | <0,001 mg/l below limit of quantification | 3 µg/l | < 33 % * | Mean |
| Chlorite | n.b. mg/l not determined | 0.2 mg/l | — | Mean |
| Chromium | <0,001 mg/l below limit of quantification | 25 µg/l | < 4 % * | Mean |
| Copper | 0,0013 mg/l | 2 mg/l | < 0.1 % | Mean |
| Cyanide | <0,001 mg/l below limit of quantification | 50 µg/l | < 2 % * | Mean |
| Dimethachlor sulfonic acid | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Fluoride | 0,11 mg/l | 1.5 mg/l | 7 % | Mean |
| Lead | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Mean |
| Mercury | <0,0001 mg/l below limit of quantification | 1 µg/l | < 10 % * | Mean |
| Metazachlor acid | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Metazachlor sulfonic acid | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Metolachlor acid | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Metolachlor sulfonic acid | <0,000025 mg/l below limit of quantification | — | — | Mean |
| Nickel | <0,001 mg/l below limit of quantification | 20 µg/l | < 5 % * | Mean |
| Nitrate | 2,1 mg/l | 50 mg/l | 4 % | Mean |
| Nitrite | 0,003 mg/l | 0.5 mg/l | 0.6 % | Mean |
| Polycyclic aromatic hydrocarbons | <0,0001 mg/l below limit of quantification | 0.1 µg/l | < 100 % * | Mean |
| Selenium | <0,0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | Mean |
| Tetrachloromethane | <0,0001 mg/l below limit of quantification | — | — | Mean |
| Uranium | <0,0001 mg/l below limit of quantification | 10 µg/l | < 1 % * | Mean |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
PFAS (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Trifluoroacetic acid (TFA) | 0,000449 mg/l | 60 µg/l UBA guide value | 0.7 % | Mean |
For trifluoroacetic acid (TFA), the German Drinking Water Ordinance does not specify a parametric value. The comparison is therefore made with the guide value of 60 µg/l issued by the Umweltbundesamt, which has replaced the earlier health-related guidance value of 3 µg/l. A guide value is not a legal maximum but a health-related classification.
Indicator parameters (19)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | 0,002 mg/l | 0.2 mg/l | 1 % | Mean |
| Ammonium | <0,03 mg/l below limit of quantification | 0.5 mg/l | < 6 % * | Mean |
| Calcite dissolution capacity | -0,2 mg/l | 5 mg/l CaCO3 | — | Mean |
| Chloride | 36,6 mg/l | 250 mg/l | 15 % | Mean |
| Clostridium perfringens (including spores) | n.b. / 100 ml not determined | 0/100 ml | — | Maximum · Median n.b. |
| Coliform bacteria | 0 / 100 ml | 0/100 ml | — | Maximum · Median 0 |
| Colony count 22 °C | 4 /ml | ohne anormale Veränderung | — | Mean |
| Colony count 36 °C | 0 /ml | ohne anormale Veränderung | — | Mean |
| Colour | 0,17 /m | 0.5 m⁻¹ | — | Mean |
| Iron | 0,005 mg/l | 0.2 mg/l | 3 % | Mean |
| Manganese | <0,001 mg/l below limit of quantification | 50 µg/l | < 2 % * | Mean |
| pH | 8,29 | 6,5–9,5 | — | Mean |
| Sodium | 1,268 mmol/l | 200 mg/l | — | Mean |
| Sulphate | 86,1 mg/l | 250 mg/l | 34 % | Mean |
| Taste | ohne | für den Verbraucher annehmbar | — | Mean |
| Temperature | 10,9 °C | — | — | Mean |
| Threshold odour number (TON) | 1 | — | — | Mean |
| Total organic carbon (TOC) | 3,4 mg/l | ohne anormale Veränderung | — | Mean |
| Turbidity | 0,04 FTU | 1 NTU | — | Mean |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Treatment substances (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Chlorine dioxide | n.b. mg/l not determined | — | — | Mean |
| Total chlorine | n.b. mg/l not determined | — | — | Mean |
Further parameters (12)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Barium | 0,03 mg/l | — | — | Mean |
| Calcium | 0,971 mmol/l | — | — | Mean |
| Carbonate hardness | 3,2 °dH | — | — | Mean |
| Hardness range (WRMG) | weich | — | — | Mean |
| Magnesium | 0,181 mmol/l | — | — | Mean |
| Oxygen | 9,7 mg/l | — | — | Mean |
| Phosphate | <0,005 mg/l below limit of quantification | — | — | Mean |
| Potassium | 0,104 mmol/l | — | — | Mean |
| Silicate / silicic acid | 7,7 mg/l | — | — | Mean |
| Sum of alkaline earth metals | 1,153 mmol/l | — | — | Mean |
| Total hardness | 6,4 °dH | — | — | Mean |
| Zinc | 0,002 mg/l | — | — | Mean |
Values taken unchanged from the publications linked below — for each parameter the most recent recorded value. „—" in the parametric value column: no currently valid legal parametric value is stored in our database for this parameter; the parameter register with all parametric values is being expanded continuously.
Source: burgwedel-c3ee5b7e.pdf · Monatsanalysen 2024 · retrieved on 11/07/2026
Harzwasserwerke GmbH - Teilgebiete: Ingeln, Össelse, Gleidingen (außer Straße Spindelweg), Teile von Rethen (Anemonenweg 9-23, Hildesheimer Str. 410, 412, 412A, 412B), Seelzer Stadtteile Almhorst, Döteberg, Gümmer, Harenberg, Kirchwehren, Lathwehren, Lohnde, Almhorster Straße, Teil der Straße Vor den Specken
enercity HannoverAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
Water hardness
2.8 °dH
Hardness range weich
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 7,5 mg/l | 50 mg/l | 15 % | Mean |
| Lead | <0.001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Mean |
| Escherichia coli (E. coli) | 0 Anzahl/100 ml | 0/100 ml | — | Maximum · Median 0 |
| Sulphate | 24,5 mg/l | 250 mg/l | 10 % | Mean |
| Sodium | 7,3 mg/l | 200 mg/l | 4 % | Mean |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Show all recorded parameters (59 — most recent value per parameter)
Microbiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 Anzahl/100 ml | 0/100 ml | — | Maximum · Median 0 |
| Intestinal enterococci | 0 Anzahl/100 ml | 0/100 ml | — | Maximum · Median 0 |
Chemical parameters (25)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | <0.0001 mg/l below limit of quantification | 3 µg/l | < 3 % * | Mean |
| Antimony | <0.0005 mg/l below limit of quantification | 5 µg/l | < 10 % * | Mean |
| Arsenic | <0.0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | Mean |
| Benzene | <0.0001 mg/l below limit of quantification | 1 µg/l | < 10 % * | Mean |
| Benzo(a)pyrene | <0.00001 mg/l below limit of quantification | 10 ng/l | < 100 % * | Mean |
| Bisphenol A | <0.0001 mg/l below limit of quantification | 2.5 µg/l | < 4 % * | Mean |
| Boron | <0.05 mg/l below limit of quantification | 1 mg/l | < 5 % * | Mean |
| Bromate | <0.01 mg/l below limit of quantification | 10 µg/l | < 100 % * | Mean |
| Cadmium | <0.001 mg/l below limit of quantification | 3 µg/l | < 33 % * | Mean |
| Chlorite | n.b. mg/l not determined | 0.2 mg/l | — | Mean |
| Chromium | <0.001 mg/l below limit of quantification | 25 µg/l | < 4 % * | Mean |
| Copper | <0.001 mg/l below limit of quantification | 2 mg/l | < < 0.1 % * | Mean |
| Cyanide | <0.001 mg/l below limit of quantification | 50 µg/l | < 2 % * | Mean |
| Fluoride | 0,05 mg/l | 1.5 mg/l | 3 % | Mean |
| Lead | <0.001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Mean |
| Mercury | <0.0001 mg/l below limit of quantification | 1 µg/l | < 10 % * | Mean |
| Nickel | <0.001 mg/l below limit of quantification | 20 µg/l | < 5 % * | Mean |
| Nitrate | 7,5 mg/l | 50 mg/l | 15 % | Mean |
| Nitrite | 0,002 mg/l | 0.5 mg/l | 0.4 % | Mean |
| Pesticides — Total | <0,0001 mg/l below limit of quantification | 0.5 µg/l | < 20 % * | Mean |
| Polycyclic aromatic hydrocarbons | <0.0001 mg/l below limit of quantification | 0.1 µg/l | < 100 % * | Mean |
| Selenium | <0.0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | Mean |
| Tetrachloroethene and Trichloroethene (sum) | <0.0001 mg/l below limit of quantification | 10 µg/l | < 1 % * | Mean |
| Trihalomethanes — Total | 0,0081 mg/l | 50 µg/l | 16 % | Mean |
| Uranium | <0.0001 mg/l below limit of quantification | 10 µg/l | < 1 % * | Mean |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Indicator parameters (20)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | 0,015 mg/l | 0.2 mg/l | 8 % | Mean |
| Ammonium | <0.03 mg/l below limit of quantification | 0.5 mg/l | < 6 % * | Mean |
| Calcite dissolution capacity | -0,5 mg/l | 5 mg/l CaCO3 | — | Mean |
| Chloride | 9,9 mg/l | 250 mg/l | 4 % | Mean |
| Clostridium perfringens (including spores) | 0 Anzahl/100 ml | 0/100 ml | — | Maximum · Median 0 |
| Coliform bacteria | 0 Anzahl/100 ml | 0/100 ml | — | Maximum · Median 0 |
| Colony count 22 °C | 0 Anzahl/ml | ohne anormale Veränderung | — | Mean |
| Colony count 36 °C | 0 Anzahl/ml | ohne anormale Veränderung | — | Mean |
| Colour | 0,06 1/m | 0.5 m⁻¹ | — | Mean |
| Conductivity (25 °C) | 159 µS/cm | 2,790 µS/cm | — | Mean |
| Iron | <0.001 mg/l below limit of quantification | 0.2 mg/l | < 0.5 % * | Mean |
| Manganese | <0.001 mg/l below limit of quantification | 50 µg/l | < 2 % * | Mean |
| pH | 9,0 | 6,5–9,5 | — | Mean |
| Sodium | 7,3 mg/l | 200 mg/l | 4 % | Mean |
| Sulphate | 24,5 mg/l | 250 mg/l | 10 % | Mean |
| Taste | ohne qualitativ | für den Verbraucher annehmbar | — | Mean |
| Temperature | 7,9 °C | — | — | Mean |
| Threshold odour number (TON) | 1 TON | — | — | Mean |
| Total organic carbon (TOC) | 1,5 mg/l | ohne anormale Veränderung | — | Mean |
| Turbidity | 0,06 FTU | 1 NTU | — | Mean |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Treatment substances (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Total chlorine | <0.02 mg/l below limit of quantification | — | — | Mean |
Further parameters (11)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Acid capacity to pH 4.3 | 0,68 mmol/l | — | — | Mean |
| Calcium | 15,9 mg/l | — | — | Mean |
| Carbonate hardness | 1,9 °dH | — | — | Mean |
| Hardness range (WRMG) | weich | — | — | Mean |
| Magnesium | 2,8 mg/l | — | — | Mean |
| Oxygen | 11,9 mg/l | — | — | Mean |
| Phosphate | <0.005 mg/l below limit of quantification | — | — | Mean |
| Potassium | 0,9 mg/l | — | — | Mean |
| Silicate / silicic acid | 2,6 mg/l | — | — | Mean |
| Spectral absorption coefficient 254 nm (SAC 254) | 2,08 1/m | — | — | Mean |
| Total hardness | 2,8 °dH | — | — | Mean |
Values taken unchanged from the publications linked below — for each parameter the most recent recorded value. „—" in the parametric value column: no currently valid legal parametric value is stored in our database for this parameter; the parameter register with all parametric values is being expanded continuously.
Source: https://www.enercity.de/assets/cms/enercity-de/Privatkunden/Produkte/Wasser/Downloads/Qualitaet/Trinkwasseranalyse-HWW.pdf · Erstellt im Februar 2026 · Januar bis Dezember des Vorjahres · retrieved on 11/07/2026
Harzwasserwerke GmbH (Teilgebiete: Ingeln, Össelse, Gleidingen, Teile von Rethen, Seelzer Stadtteile Almhorst, Döteberg, Gümmer, Harenberg, Kirchwehren, Lathwehren, Lohnde)
enercity HannoverAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
Water hardness
2.8 °dH
Hardness range weich
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 7,5 mg/l | 50 mg/l | 15 % | Mean |
| Lead | <0.001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Mean |
| Escherichia coli (E. coli) | 0 Anzahl/100 ml | 0/100 ml | — | Maximum · Median 0 |
| Sulphate | 24,5 mg/l | 250 mg/l | 10 % | Mean |
| Sodium | 7,3 mg/l | 200 mg/l | 4 % | Mean |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Show all recorded parameters (59 — most recent value per parameter)
Microbiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 Anzahl/100 ml | 0/100 ml | — | Maximum · Median 0 |
| Intestinal enterococci | 0 Anzahl/100 ml | 0/100 ml | — | Maximum · Median 0 |
Chemical parameters (25)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | <0.0001 mg/l below limit of quantification | 3 µg/l | < 3 % * | Mean |
| Antimony | <0.0005 mg/l below limit of quantification | 5 µg/l | < 10 % * | Mean |
| Arsenic | <0.0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | Mean |
| Benzene | <0.0001 mg/l below limit of quantification | 1 µg/l | < 10 % * | Mean |
| Benzo(a)pyrene | <0.00001 mg/l below limit of quantification | 10 ng/l | < 100 % * | Mean |
| Bisphenol A | <0.0001 mg/l below limit of quantification | 2.5 µg/l | < 4 % * | Mean |
| Boron | <0.05 mg/l below limit of quantification | 1 mg/l | < 5 % * | Mean |
| Bromate | <0.01 mg/l below limit of quantification | 10 µg/l | < 100 % * | Mean |
| Cadmium | <0.001 mg/l below limit of quantification | 3 µg/l | < 33 % * | Mean |
| Chlorite | n.b. mg/l not determined | 0.2 mg/l | — | Mean |
| Chromium | <0.001 mg/l below limit of quantification | 25 µg/l | < 4 % * | Mean |
| Copper | <0.001 mg/l below limit of quantification | 2 mg/l | < < 0.1 % * | Mean |
| Cyanide | <0.001 mg/l below limit of quantification | 50 µg/l | < 2 % * | Mean |
| Fluoride | 0,05 mg/l | 1.5 mg/l | 3 % | Mean |
| Lead | <0.001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Mean |
| Mercury | <0.0001 mg/l below limit of quantification | 1 µg/l | < 10 % * | Mean |
| Nickel | <0.001 mg/l below limit of quantification | 20 µg/l | < 5 % * | Mean |
| Nitrate | 7,5 mg/l | 50 mg/l | 15 % | Mean |
| Nitrite | 0,002 mg/l | 0.5 mg/l | 0.4 % | Mean |
| Pesticides — Total | <0,0001 mg/l below limit of quantification | 0.5 µg/l | < 20 % * | Mean |
| Polycyclic aromatic hydrocarbons | <0.0001 mg/l below limit of quantification | 0.1 µg/l | < 100 % * | Mean |
| Selenium | <0.0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | Mean |
| Tetrachloroethene and Trichloroethene (sum) | <0.0001 mg/l below limit of quantification | 10 µg/l | < 1 % * | Mean |
| Trihalomethanes — Total | 0,0081 mg/l | 50 µg/l | 16 % | Mean |
| Uranium | <0.0001 mg/l below limit of quantification | 10 µg/l | < 1 % * | Mean |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Indicator parameters (20)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | 0,015 mg/l | 0.2 mg/l | 8 % | Mean |
| Ammonium | <0.03 mg/l below limit of quantification | 0.5 mg/l | < 6 % * | Mean |
| Calcite dissolution capacity | -0,5 mg/l | 5 mg/l CaCO3 | — | Mean |
| Chloride | 9,9 mg/l | 250 mg/l | 4 % | Mean |
| Clostridium perfringens (including spores) | 0 Anzahl/100 ml | 0/100 ml | — | Maximum · Median 0 |
| Coliform bacteria | 0 Anzahl/100 ml | 0/100 ml | — | Maximum · Median 0 |
| Colony count 22 °C | 0 Anzahl/ml | ohne anormale Veränderung | — | Mean |
| Colony count 36 °C | 0 Anzahl/ml | ohne anormale Veränderung | — | Mean |
| Colour | 0,06 1/m | 0.5 m⁻¹ | — | Mean |
| Conductivity (25 °C) | 159 µS/cm | 2,790 µS/cm | — | Mean |
| Iron | <0.001 mg/l below limit of quantification | 0.2 mg/l | < 0.5 % * | Mean |
| Manganese | <0.001 mg/l below limit of quantification | 50 µg/l | < 2 % * | Mean |
| pH | 9,0 | 6,5–9,5 | — | Mean |
| Sodium | 7,3 mg/l | 200 mg/l | 4 % | Mean |
| Sulphate | 24,5 mg/l | 250 mg/l | 10 % | Mean |
| Taste | ohne qualitativ | für den Verbraucher annehmbar | — | Mean |
| Temperature | 7,9 °C | — | — | Mean |
| Threshold odour number (TON) | 1 TON | — | — | Mean |
| Total organic carbon (TOC) | 1,5 mg/l | ohne anormale Veränderung | — | Mean |
| Turbidity | 0,06 FTU | 1 NTU | — | Mean |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Treatment substances (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Total chlorine | <0.02 mg/l below limit of quantification | — | — | Mean |
Further parameters (11)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Acid capacity to pH 4.3 | 0,68 mmol/l | — | — | Mean |
| Calcium | 15,9 mg/l | — | — | Mean |
| Carbonate hardness | 1,9 °dH | — | — | Mean |
| Hardness range (WRMG) | weich | — | — | Mean |
| Magnesium | 2,8 mg/l | — | — | Mean |
| Oxygen | 11,9 mg/l | — | — | Mean |
| Phosphate | <0.005 mg/l below limit of quantification | — | — | Mean |
| Potassium | 0,9 mg/l | — | — | Mean |
| Silicate / silicic acid | 2,6 mg/l | — | — | Mean |
| Spectral absorption coefficient 254 nm (SAC 254) | 2,08 1/m | — | — | Mean |
| Total hardness | 2,8 °dH | — | — | Mean |
Values taken unchanged from the publications linked below — for each parameter the most recent recorded value. „—" in the parametric value column: no currently valid legal parametric value is stored in our database for this parameter; the parameter register with all parametric values is being expanded continuously.
Source: hannover-2.pdf · Februar 2026 · Januar bis Dezember des Vorjahres · retrieved on 11/07/2026
Kleine Ortsteile: Ingeln, Össelse, Gleidingen (außer Spindelweg), Teile von Rethen, Seelzer Stadtteile Almhorst, Döteberg, Gümmer, Harenberg, Kirchwehren, Lathwehren, Lohnde, Almhorster Straße, Teil Vor den Specken – versorgt mit Trinkwasser der Harzwasserwerke GmbH
enercity HannoverAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
Water hardness
2.8 °dH
Hardness range weich
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 7,5 mg/l | 50 mg/l | 15 % | Mean |
| Lead | <0.001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Mean |
| Escherichia coli (E. coli) | 0 Anzahl/100 ml | 0/100 ml | — | Maximum · Median 0 |
| Sulphate | 24,5 mg/l | 250 mg/l | 10 % | Mean |
| Sodium | 7,3 mg/l | 200 mg/l | 4 % | Mean |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Show all recorded parameters (59 — most recent value per parameter)
Microbiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 Anzahl/100 ml | 0/100 ml | — | Maximum · Median 0 |
| Intestinal enterococci | 0 Anzahl/100 ml | 0/100 ml | — | Maximum · Median 0 |
Chemical parameters (25)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | <0.0001 mg/l below limit of quantification | 3 µg/l | < 3 % * | Mean |
| Antimony | <0.0005 mg/l below limit of quantification | 5 µg/l | < 10 % * | Mean |
| Arsenic | <0.0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | Mean |
| Benzene | <0.0001 mg/l below limit of quantification | 1 µg/l | < 10 % * | Mean |
| Benzo(a)pyrene | <0.00001 mg/l below limit of quantification | 10 ng/l | < 100 % * | Mean |
| Bisphenol A | <0.0001 mg/l below limit of quantification | 2.5 µg/l | < 4 % * | Mean |
| Boron | <0.05 mg/l below limit of quantification | 1 mg/l | < 5 % * | Mean |
| Bromate | <0.01 mg/l below limit of quantification | 10 µg/l | < 100 % * | Mean |
| Cadmium | <0.001 mg/l below limit of quantification | 3 µg/l | < 33 % * | Mean |
| Chlorite | n.b. mg/l not determined | 0.2 mg/l | — | Mean |
| Chromium | <0.001 mg/l below limit of quantification | 25 µg/l | < 4 % * | Mean |
| Copper | <0.001 mg/l below limit of quantification | 2 mg/l | < < 0.1 % * | Mean |
| Cyanide | <0.001 mg/l below limit of quantification | 50 µg/l | < 2 % * | Mean |
| Fluoride | 0,05 mg/l | 1.5 mg/l | 3 % | Mean |
| Lead | <0.001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Mean |
| Mercury | <0.0001 mg/l below limit of quantification | 1 µg/l | < 10 % * | Mean |
| Nickel | <0.001 mg/l below limit of quantification | 20 µg/l | < 5 % * | Mean |
| Nitrate | 7,5 mg/l | 50 mg/l | 15 % | Mean |
| Nitrite | 0,002 mg/l | 0.5 mg/l | 0.4 % | Mean |
| Pesticides — Total | <0,0001 mg/l below limit of quantification | 0.5 µg/l | < 20 % * | Mean |
| Polycyclic aromatic hydrocarbons | <0.0001 mg/l below limit of quantification | 0.1 µg/l | < 100 % * | Mean |
| Selenium | <0.0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | Mean |
| Tetrachloroethene and Trichloroethene (sum) | <0.0001 mg/l below limit of quantification | 10 µg/l | < 1 % * | Mean |
| Trihalomethanes — Total | 0,0081 mg/l | 50 µg/l | 16 % | Mean |
| Uranium | <0.0001 mg/l below limit of quantification | 10 µg/l | < 1 % * | Mean |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Indicator parameters (20)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | 0,015 mg/l | 0.2 mg/l | 8 % | Mean |
| Ammonium | <0.03 mg/l below limit of quantification | 0.5 mg/l | < 6 % * | Mean |
| Calcite dissolution capacity | -0,5 mg/l | 5 mg/l CaCO3 | — | Mean |
| Chloride | 9,9 mg/l | 250 mg/l | 4 % | Mean |
| Clostridium perfringens (including spores) | 0 Anzahl/100 ml | 0/100 ml | — | Maximum · Median 0 |
| Coliform bacteria | 0 Anzahl/100 ml | 0/100 ml | — | Maximum · Median 0 |
| Colony count 22 °C | 0 Anzahl/ml | ohne anormale Veränderung | — | Mean |
| Colony count 36 °C | 0 Anzahl/ml | ohne anormale Veränderung | — | Mean |
| Colour | 0,06 1/m | 0.5 m⁻¹ | — | Mean |
| Conductivity (25 °C) | 159 µS/cm | 2,790 µS/cm | — | Mean |
| Iron | <0.001 mg/l below limit of quantification | 0.2 mg/l | < 0.5 % * | Mean |
| Manganese | <0.001 mg/l below limit of quantification | 50 µg/l | < 2 % * | Mean |
| pH | 9,0 | 6,5–9,5 | — | Mean |
| Sodium | 7,3 mg/l | 200 mg/l | 4 % | Mean |
| Sulphate | 24,5 mg/l | 250 mg/l | 10 % | Mean |
| Taste | ohne qualitativ | für den Verbraucher annehmbar | — | Mean |
| Temperature | 7,9 °C | — | — | Mean |
| Threshold odour number (TON) | 1 TON | — | — | Mean |
| Total organic carbon (TOC) | 1,5 mg/l | ohne anormale Veränderung | — | Mean |
| Turbidity | 0,06 FTU | 1 NTU | — | Mean |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Treatment substances (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Total chlorine | <0.02 mg/l below limit of quantification | — | — | Mean |
Further parameters (11)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Acid capacity to pH 4.3 | 0,68 mmol/l | — | — | Mean |
| Calcium | 15,9 mg/l | — | — | Mean |
| Carbonate hardness | 1,9 °dH | — | — | Mean |
| Hardness range (WRMG) | weich | — | — | Mean |
| Magnesium | 2,8 mg/l | — | — | Mean |
| Oxygen | 11,9 mg/l | — | — | Mean |
| Phosphate | <0.005 mg/l below limit of quantification | — | — | Mean |
| Potassium | 0,9 mg/l | — | — | Mean |
| Silicate / silicic acid | 2,6 mg/l | — | — | Mean |
| Spectral absorption coefficient 254 nm (SAC 254) | 2,08 1/m | — | — | Mean |
| Total hardness | 2,8 °dH | — | — | Mean |
Values taken unchanged from the publications linked below — for each parameter the most recent recorded value. „—" in the parametric value column: no currently valid legal parametric value is stored in our database for this parameter; the parameter register with all parametric values is being expanded continuously.
Source: https://www.enercity.de/assets/cms/enercity-de/Privatkunden/Produkte/Wasser/Downloads/Qualitaet/Trinkwasseranalyse-HWW.pdf · Februar 2026 · Januar bis Dezember des Vorjahres · retrieved on 25/07/2026
WW Wettmar - Reinwasser Abgang Netz
Wasserverband Nordhannover (WVN)Assigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
These values are more than a year old. The most recent analysis the water supplier has published for this zone dates from 28/11/2023. We have no newer values — which is why we show the latest available ones rather than none at all. They say nothing about how the water has changed since then.
Water hardness
13 °dH
Hardness range medium
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 11 mg/l | 50 mg/l | 22 % | Single value |
| Lead | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value |
| Sulphate | 127 mg/l | 250 mg/l | 51 % | Single value |
| Sodium | 17 mg/l | 200 mg/l | 9 % | Single value |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Show all recorded parameters (89 — most recent value per parameter)
Chemical parameters (58)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | <0,5 µg/l below limit of quantification | 3 µg/l | < 17 % * | Single value |
| 2,6-Dichlorobenzamide (BAM) | <0,000050 mg/l below limit of quantification | — | — | Single value |
| AMPA | <0,000020 mg/l below limit of quantification | — | — | Single value |
| Antimony | <0,001 mg/l below limit of quantification | 5 µg/l | < 20 % * | Single value |
| Arsenic | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value |
| Atrazine | <0,000010 mg/l below limit of quantification | — | — | Single value |
| Bentazone | <0,000010 mg/l below limit of quantification | — | — | Single value |
| Benzene | <0,3 µg/l below limit of quantification | 1 µg/l | < 30 % * | Single value |
| Benzo(a)pyrene | <0,0030 µg/l below limit of quantification | 10 ng/l | < 30 % * | Single value |
| Benzo(b)fluoranthene | <0,030 µg/l below limit of quantification | — | — | Single value |
| Benzo(ghi)perylene | <0,030 µg/l below limit of quantification | — | — | Single value |
| Benzo(k)fluoranthene | <0,030 µg/l below limit of quantification | — | — | Single value |
| Boron | <0,10 mg/l below limit of quantification | 1 mg/l | < 10 % * | Single value |
| Bromacil | <0,000020 mg/l below limit of quantification | — | — | Single value |
| Bromate | <0,003 mg/l below limit of quantification | 10 µg/l | < 30 % * | Single value |
| Bromodichloromethane | <0,5 µg/l below limit of quantification | — | — | Single value |
| Cadmium | <0,0003 mg/l below limit of quantification | 3 µg/l | < 10 % * | Single value |
| Chlorotoluron | <0,000020 mg/l below limit of quantification | — | — | Single value |
| Chromium | 0,0013 mg/l | 25 µg/l | 5 % | Single value |
| Copper | <0,010 mg/l below limit of quantification | 2 mg/l | < 0.5 % * | Single value |
| Cyanide | <0,005 mg/l below limit of quantification | 50 µg/l | < 10 % * | Single value |
| Desethylatrazine | <0,000020 mg/l below limit of quantification | — | — | Single value |
| Desethylterbuthylazine | <0,000025 mg/l below limit of quantification | — | — | Single value |
| Desisopropylatrazine | <0,000025 mg/l below limit of quantification | — | — | Single value |
| Dibromochloromethane | <0,5 µg/l below limit of quantification | — | — | Single value |
| Dichlorprop | <0,000020 mg/l below limit of quantification | — | — | Single value |
| Dimethachlor | <0,000050 mg/l below limit of quantification | — | — | Single value |
| Diuron | <0,000020 mg/l below limit of quantification | — | — | Single value |
| Ethidimuron | <0,000050 mg/l below limit of quantification | — | — | Single value |
| Ethofumesate | <0,000050 mg/l below limit of quantification | — | — | Single value |
| Fluoride | <0,10 mg/l below limit of quantification | 1.5 mg/l | < 7 % * | Single value |
| Glyphosate | <0,000020 mg/l below limit of quantification | — | — | Single value |
| Indeno(1,2,3-cd)pyrene | <0,030 µg/l below limit of quantification | — | — | Single value |
| Isoproturon | <0,000020 mg/l below limit of quantification | — | — | Single value |
| Lead | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value |
| Mecoprop | <0,000010 mg/l below limit of quantification | — | — | Single value |
| Mercury | <0,0003 mg/l below limit of quantification | 1 µg/l | < 30 % * | Single value |
| Metalaxyl | <0,000020 mg/l below limit of quantification | — | — | Single value |
| Metamitron | <0,000060 mg/l below limit of quantification | — | — | Single value |
| Metazachlor | <0,000020 mg/l below limit of quantification | — | — | Single value |
| Metazachlor acid | 0,000097 mg/l | — | — | Single value |
| Metolachlor | <0,000010 mg/l below limit of quantification | — | — | Single value |
| Metolachlor acid | 0,000023 mg/l | — | — | Single value |
| Metolachlor sulfonic acid | 0,000071 mg/l | — | — | Single value |
| Metoxuron | <0,000040 mg/l below limit of quantification | — | — | Single value |
| Metribuzin | <0,000020 mg/l below limit of quantification | — | — | Single value |
| Nickel | 0,002 mg/l | 20 µg/l | 10 % | Single value |
| Nitrate | 11 mg/l | 50 mg/l | 22 % | Single value |
| Nitrite | <0,01 mg/l below limit of quantification | 0.5 mg/l | < 2 % * | Single value |
| Oxadixyl | <0,000050 mg/l below limit of quantification | — | — | Single value |
| Selenium | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value |
| Simazine | <0,000010 mg/l below limit of quantification | — | — | Single value |
| Terbuthylazine | <0,000010 mg/l below limit of quantification | — | — | Single value |
| Tetrachloroethene | <0,5 µg/l below limit of quantification | — | — | Single value |
| Tribromomethane (bromoform) | <0,5 µg/l below limit of quantification | — | — | Single value |
| Trichloroethene | <0,5 µg/l below limit of quantification | — | — | Single value |
| Trichloromethane (chloroform) | <0,5 µg/l below limit of quantification | — | — | Single value |
| Uranium | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
PFAS (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Trifluoroacetic acid (TFA) | 0,0011 mg/l | 60 µg/l UBA guide value | 2 % | Single value |
For trifluoroacetic acid (TFA), the German Drinking Water Ordinance does not specify a parametric value. The comparison is therefore made with the guide value of 60 µg/l issued by the Umweltbundesamt, which has replaced the earlier health-related guidance value of 3 µg/l. A guide value is not a legal maximum but a health-related classification.
Metabolites (4)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1H-1,2,4-Triazole | <0,000050 mg/l below limit of quantification | — | — | Single value |
| Desphenyl-chloridazon | 0,00095 mg/l | — | — | Single value |
| Dimethylsulfamide (DMS) | <0,000050 mg/l below limit of quantification | — | — | Single value |
| Methyl-desphenyl-chloridazon | 0,000053 mg/l | — | — | Single value |
Indicator parameters (16)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | 0,015 mg/l | 0.2 mg/l | 8 % | Single value |
| Ammonium | <0,05 mg/l below limit of quantification | 0.5 mg/l | < 10 % * | Single value |
| Calcite dissolution capacity | -2,2 mg/l | 5 mg/l CaCO3 | — | Single value |
| Chloride | 41 mg/l | 250 mg/l | 16 % | Single value |
| Colour | farblos Unit not stated in the document | 0.5 m⁻¹ | — | Single value |
| Conductivity (25 °C) | 617 µS/cm | 2,790 µS/cm | — | Single value |
| Iron | 0,012 mg/l | 0.2 mg/l | 6 % | Single value |
| Manganese | <0,005 mg/l below limit of quantification | 50 µg/l | < 10 % * | Single value |
| Odour | ohne | für den Verbraucher annehmbar | — | Single value |
| pH | 8,12 | 6,5–9,5 | — | Single value |
| Sodium | 17 mg/l | 200 mg/l | 9 % | Single value |
| Sulphate | 127 mg/l | 250 mg/l | 51 % | Single value |
| Taste | ohne | für den Verbraucher annehmbar | — | Single value |
| Temperature | 10,8 °C | — | — | Single value |
| Total organic carbon (TOC) | 1,8 mg/l | ohne anormale Veränderung | — | Single value |
| Turbidity | klar Unit not stated in the document | 1 NTU | — | Single value |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Further parameters (10)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Acid capacity to pH 4.3 | 1,75 mmol/l | — | — | Single value |
| Acid capacity to pH 8.2 | - mmol/l not determined | — | — | Single value |
| Base capacity to pH 8.2 | <0,05 mmol/l below limit of quantification | — | — | Single value |
| Calcium | 8,4 °dH | — | — | Single value |
| Carbonate hardness | 4,9 °dH | — | — | Single value |
| Hydrogen carbonate | <2,2 mg/l below limit of quantification | — | — | Single value |
| Magnesium | 20 mg/l | — | — | Single value |
| Potassium | 7 mg/l | — | — | Single value |
| Saturation index | 0,19 1 | — | — | Single value |
| Total hardness | 13,0 °dH | — | — | Single value |
Values taken unchanged from the publications linked below — for each parameter the most recent recorded value. „—" in the parametric value column: no currently valid legal parametric value is stored in our database for this parameter; the parameter register with all parametric values is being expanded continuously.
Source: https://www.wvn.de/files/Chemie_2024_WWW.pdf · 12.01.2024 · Entnahmedatum 28.11.2023 · retrieved on 11/07/2026
burgwedel gesamt
Wasserverband Nordhannover (WVN)Assigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
Water hardness
11.8 °dH
Hardness range mittel
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 2,2 mg/l | 50 mg/l | 4 % | Mean |
| Sulphate | 91 mg/l | 250 mg/l | 36 % | Mean |
Show all recorded parameters (13 — most recent value per parameter)
Chemical parameters (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 2,2 mg/l | 50 mg/l | 4 % | Mean |
Indicator parameters (5)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Ammonium | < 0,04 mg/l below limit of quantification | 0.5 mg/l | < 8 % * | Mean |
| Chloride | 48 mg/l | 250 mg/l | 19 % | Mean |
| Manganese | < 0,015 mg/l below limit of quantification | 50 µg/l | < 30 % * | Mean |
| pH | 7,80 --- | 6,5–9,5 | — | Mean |
| Sulphate | 91 mg/l | 250 mg/l | 36 % | Mean |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Further parameters (7)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 76 mg/l | — | — | Mean |
| Carbonate hardness | 1,2 mmol/l | — | — | Mean |
| Hardness range (WRMG) | mittel --- | — | — | Mean |
| Magnesium | 5,8 mg/l | — | — | Mean |
| Phosphate | < 0,3 mg/l below limit of quantification | — | — | Mean |
| Potassium | 3,7 mg/l | — | — | Mean |
| Total hardness | 2,1 mmol/l | — | — | Mean |
Values taken unchanged from the publications linked below — for each parameter the most recent recorded value. „—" in the parametric value column: no currently valid legal parametric value is stored in our database for this parameter; the parameter register with all parametric values is being expanded continuously.
Source: burgwedel-b45e26f2.html · Februar 2026 · Januar bis Dezember des Vorjahres · retrieved on 11/07/2026
Frequent questions about postcode 30900
- How hard is the water in Postcode 30900?
- enercity Hannover publishes a total hardness of 12 °dH for the supply zone enercity Hannover gesamt (hardness range mittel). The hardness range is a classification under the German Detergents and Cleaning Products Act (soft below 8,4 °dH, medium 8,4 to 14 °dH, hard above that) and not a quality verdict — it indicates how much calcium and magnesium is dissolved in the water. Basis: Erstellt im Februar 2026 aus Untersuchungen von Januar bis Dezember des Vorjahres, retrieved on 11/07/2026.
- How much nitrate is in the drinking water in Postcode 30900?
- enercity Hannover publishes a nitrate value of 2,2 mg/l for the supply zone enercity Hannover gesamt. The statutory parametric value is 50 mg/l; the measured value represents 4 % of the parametric value. Basis: Erstellt im Februar 2026 aus Untersuchungen von Januar bis Dezember des Vorjahres, retrieved on 11/07/2026.
- Who supplies the drinking water in Postcode 30900?
- enercity Hannover. The values shown here come from the supply zone enercity Hannover gesamt and apply to the water the supplier delivers. What happens between the building connection and the tap — in old lead pipes, for example — is not covered by these analyses; information on that is provided by owners, the health authority or an examination by an accredited laboratory.
General questions — how current the data is, limit of quantification, parametric values, who is behind this site — are answered under Questions & answers.