Drinking water in 31840
One supply zone, water supplier: Stadtwerke Hess. Oldendorf.
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.
NP Rohden, bei Schwiezer-Koch, Driftstr. 21, 31840 Hess. Oldendorf
Stadtwerke Hess. OldendorfAssigned 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 12/06/2025. 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
22.4 °dH
Hardness range hard
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 7 mg/l | 50 mg/l | 14 % | Single value |
| Lead | <0.0015 mg/l below limit of quantification | 10 µg/l | < 15 % * | Single value |
| Escherichia coli (E. coli) | 0 MPN/100 ml | 0/100 ml | — | Single value |
| Sulphate | 67 mg/l | 250 mg/l | 27 % | Single value |
| Sodium | 16.4 mg/l | 200 mg/l | 8 % | 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 (94 — most recent value per parameter)
Microbiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 MPN/100 ml | 0/100 ml | — | Single value |
| Intestinal enterococci | 0 KBE/100 ml | 0/100 ml | — | Single value |
Chemical parameters (57)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | <0.0009 mg/l below limit of quantification | 3 µg/l | < 30 % * | Single value |
| 2,6-Dichlorobenzamide (BAM) | <0.0001 mg/l below limit of quantification | — | — | Single value |
| AMPA | <0.00005 mg/l below limit of quantification | — | — | Single value |
| Antimony | <0.0015 mg/l below limit of quantification | 5 µg/l | < 30 % * | Single value |
| Arsenic | <0.003 mg/l below limit of quantification | 10 µg/l | < 30 % * | Single value |
| Atrazine | <0.00001 mg/l below limit of quantification | — | — | Single value |
| Bentazone | <0.00001 mg/l below limit of quantification | — | — | Single value |
| Benzene | <0.00030 mg/l below limit of quantification | 1 µg/l | < 30 % * | Single value |
| Benzo(a)pyrene | <0.000003 mg/l below limit of quantification | 10 ng/l | < 30 % * | Single value |
| Benzo(b)fluoranthene | <0.00002 mg/l below limit of quantification | — | — | Single value |
| Benzo(ghi)perylene | <0.00002 mg/l below limit of quantification | — | — | Single value |
| Benzo(k)fluoranthene | <0.00002 mg/l below limit of quantification | — | — | Single value |
| Bisphenol A | <0.00005 mg/l below limit of quantification | 2.5 µg/l | < 2 % * | Single value |
| Boron | <0.1 mg/l below limit of quantification | 1 mg/l | < 10 % * | Single value |
| Bromacil | <0.00001 mg/l below limit of quantification | — | — | Single value |
| Bromate | <0.003 mg/l below limit of quantification | 10 µg/l | < 30 % * | Single value |
| Bromodichloromethane | <0.0005 mg/l below limit of quantification | — | — | Single value |
| Cadmium | <0.0010 mg/l below limit of quantification | 3 µg/l | < 33 % * | Single value |
| Chloridazon | <0.00001 mg/l below limit of quantification | — | — | Single value |
| Chlorotoluron | <0.00001 mg/l below limit of quantification | — | — | Single value |
| Chromium | <0.0005 mg/l below limit of quantification | 25 µg/l | < 2 % * | Single value |
| Copper | 0.017 mg/l | 2 mg/l | 0.9 % | Single value |
| Cyanide | <0.005 mg/l below limit of quantification | 50 µg/l | < 10 % * | Single value |
| Desethylatrazine | <0.00001 mg/l below limit of quantification | — | — | Single value |
| Desisopropylatrazine | <0.00003 mg/l below limit of quantification | — | — | Single value |
| Dibromochloromethane | <0.0005 mg/l below limit of quantification | — | — | Single value |
| Dichlorprop-P | <0.00001 mg/l below limit of quantification | — | — | Single value |
| Diuron | <0.00001 mg/l below limit of quantification | — | — | Single value |
| Ethidimuron | <0.00001 mg/l below limit of quantification | — | — | Single value |
| Ethofumesate | <0.00003 mg/l below limit of quantification | — | — | Single value |
| Fluoride | <0.45 mg/l below limit of quantification | 1.5 mg/l | < 30 % * | Single value |
| Glyphosate | <0.00005 mg/l below limit of quantification | — | — | Single value |
| Isoproturon | <0.00001 mg/l below limit of quantification | — | — | Single value |
| Lead | <0.0015 mg/l below limit of quantification | 10 µg/l | < 15 % * | Single value |
| MCPA | <0.00001 mg/l below limit of quantification | — | — | Single value |
| Mecoprop-P | <0.00001 mg/l below limit of quantification | — | — | Single value |
| Mercury | <0.0003 mg/l below limit of quantification | 1 µg/l | < 30 % * | Single value |
| Metalaxyl | <0.0001 mg/l below limit of quantification | — | — | Single value |
| Metamitron | <0.00001 mg/l below limit of quantification | — | — | Single value |
| Metazachlor | <0.00001 mg/l below limit of quantification | — | — | Single value |
| Metolachlor | <0.00001 mg/l below limit of quantification | — | — | Single value |
| Metoxuron | <0.00001 mg/l below limit of quantification | — | — | Single value |
| Metribuzin | <0.00001 mg/l below limit of quantification | — | — | Single value |
| Nickel | <0.005 mg/l below limit of quantification | 20 µg/l | < 25 % * | Single value |
| Nitrate | 7 mg/l | 50 mg/l | 14 % | Single value |
| Nitrite | 0.01 mg/l | 0.5 mg/l | 2 % | Single value |
| Oxadixyl | <0.00001 mg/l below limit of quantification | — | — | Single value |
| Polycyclic aromatic hydrocarbons | <0.00003 mg/l below limit of quantification | 0.1 µg/l | < 30 % * | Single value |
| Selenium | <0.003 mg/l below limit of quantification | 10 µg/l | < 30 % * | Single value |
| Simazine | <0.00001 mg/l below limit of quantification | — | — | Single value |
| Tebuconazole | <0.00001 mg/l below limit of quantification | — | — | Single value |
| Terbuthylazine | <0.00001 mg/l below limit of quantification | — | — | Single value |
| Tetrachloroethene | <0.0005 mg/l below limit of quantification | — | — | Single value |
| Tribromomethane (bromoform) | <0.0005 mg/l below limit of quantification | — | — | Single value |
| Trichloroethene | <0.0005 mg/l below limit of quantification | — | — | Single value |
| Trichloromethane (chloroform) | <0.0005 mg/l below limit of quantification | — | — | Single value |
| Uranium | <0.003 mg/l below limit of quantification | 10 µg/l | < 30 % * | 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) | 0.00910 mg/l | 60 µg/l UBA guide value | 15 % | 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 (11)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1H-1,2,4-Triazole | <0.00008 mg/l below limit of quantification | — | — | Single value |
| Chlorothalonil M12 | <0.0001 mg/l below limit of quantification | — | — | Single value |
| Chlorothalonil M4 | 0.00050 mg/l | — | — | Single value |
| Desphenyl-chloridazon | 0.00064 mg/l | — | — | Single value |
| Dimethachlor acid CGA 50266 | <0.0003 mg/l below limit of quantification | — | — | Single value |
| Dimethachlor sulfonic acid CGA 354742 | <0.0001 mg/l below limit of quantification | — | — | Single value |
| Dimethenamid sulfonic acid M27 | <0.0001 mg/l below limit of quantification | — | — | Single value |
| Metazachlor sulfonic acid BH 479-8 | <0.0001 mg/l below limit of quantification | — | — | Single value |
| Methyl-desphenyl-chloridazon | <0.0001 mg/l below limit of quantification | — | — | Single value |
| S-metolachlor acid CGA 51202/351916 | <0.0001 mg/l below limit of quantification | — | — | Single value |
| S-metolachlor sulfonic acid CGA 380168/354743 | <0.0001 mg/l below limit of quantification | — | — | Single value |
Indicator parameters (17)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | <0.01 mg/l below limit of quantification | 0.2 mg/l | < 5 % * | Single value |
| Ammonium | <0.04 mg/l below limit of quantification | 0.5 mg/l | < 8 % * | Single value |
| Chloride | 25 mg/l | 250 mg/l | 10 % | Single value |
| Coliform bacteria | 0 MPN/100 ml | 0/100 ml | — | Single value |
| Colony count 22 °C | 0 KBE/ml | ohne anormale Veränderung | — | Single value |
| Colony count 36 °C | 0 KBE/ml | ohne anormale Veränderung | — | Single value |
| Colour | 0.125 1/m | 0.5 m⁻¹ | — | Single value |
| Conductivity (25 °C) | 797 µS/cm | 2,790 µS/cm | — | Single value |
| Iron | 0.07 mg/l | 0.2 mg/l | 35 % | Single value |
| Manganese | <0.015 mg/l below limit of quantification | 50 µg/l | < 30 % * | Single value |
| Odour | ohne | für den Verbraucher annehmbar | — | Single value |
| Sodium | 16.4 mg/l | 200 mg/l | 8 % | Single value |
| Sulphate | 67 mg/l | 250 mg/l | 27 % | Single value |
| Taste | normal | für den Verbraucher annehmbar | — | Single value |
| Temperature | 16.0 °C | — | — | Single value |
| Total organic carbon (TOC) | 1.53 mg/l | ohne anormale Veränderung | — | Single value |
| Turbidity | 0.15 FNU | 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 (6)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Acid capacity to pH 4.3 | 6.6 mmol/l | — | — | Single value |
| Calcium | 143.4 mg/l | — | — | Single value |
| Carbonate hardness | 18.4 °dH | — | — | Single value |
| Magnesium | 11.2 mg/l | — | — | Single value |
| Potassium | 1.2 mg/l | — | — | Single value |
| Total hardness | 4.0 mmol/l | — | — | 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.stadtwerke-hessisch-oldendorf.de/fileadmin/user_upload/pdf/trinkwasserqualitiaet_2025_12/Hessisch_Oldendorf_Kernstadt.PDF · 22.07.25 · Entnahme 12.06.2025 09:30, Prüfdauer 12.06.25 - 22.07.25 · retrieved on 11/07/2026
Frequent questions about postcode 31840
- How hard is the water in Postcode 31840?
- Stadtwerke Hess. Oldendorf publishes a total hardness of 4.0 mmol/l for the supply zone NP Rohden, bei Schwiezer-Koch, Driftstr. 21, 31840 Hess. Oldendorf — that corresponds to 22.4 °dH. 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: 22.07.25, retrieved on 11/07/2026.
- How much nitrate is in the drinking water in Postcode 31840?
- Stadtwerke Hess. Oldendorf publishes a nitrate value of 7 mg/l for the supply zone NP Rohden, bei Schwiezer-Koch, Driftstr. 21, 31840 Hess. Oldendorf. The statutory parametric value is 50 mg/l; the measured value represents 14 % of the parametric value. Basis: 22.07.25, retrieved on 11/07/2026.
- Who supplies the drinking water in Postcode 31840?
- Stadtwerke Hess. Oldendorf. The values shown here come from the supply zone NP Rohden, bei Schwiezer-Koch, Driftstr. 21, 31840 Hess. Oldendorf 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.