Drinking water in Unna
12 supply zones — values can differ depending on the district. Below is the zone with the most documented parameters, the others collapsed underneath. To determine the exact match, look up the postcode.
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.
Verbundwasserwerk Essen; Entnahmestelle: Trinkwasser Essen nach UV Ltg. Überruhr, WAA 2 (00-0350)
GelsenwasserAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
Water hardness
7.7 °dH
Hardness range weich
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 9,2 mg/l | 50 mg/l | 18 % | Mean |
| Lead | <0,0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | Mean |
| Escherichia coli (E. coli) | 0 KBE/100 ml | 0/100 ml | — | Mean |
| Sulphate | 42 mg/l | 250 mg/l | 17 % | Mean |
| Sodium | 41 mg/l | 200 mg/l | 21 % | 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 KBE/100 ml | 0/100 ml | — | Mean |
| Intestinal enterococci | 0 KBE/100 ml | 0/100 ml | — | Mean |
Chemical parameters (26)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | <0,05 µg/l below limit of quantification | 3 µg/l | < 2 % * | Mean |
| Antimony | <0,001 mg/l below limit of quantification | 5 µg/l | < 20 % * | Mean |
| Arsenic | <0,0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | Mean |
| Benzene | <0,05 µg/l below limit of quantification | 1 µg/l | < 5 % * | Mean |
| Benzo(a)pyrene | <0,0025 µg/l below limit of quantification | 10 ng/l | < 25 % * | Mean |
| Bisphenol A | <0,015 µg/l below limit of quantification | 2.5 µg/l | < 0.6 % * | Mean |
| Boron | 0,07 mg/l | 1 mg/l | 7 % | Mean |
| Bromate | <0,0030 mg/l below limit of quantification | 10 µg/l | < 30 % * | Mean |
| Cadmium | <0,0003 mg/l below limit of quantification | 3 µg/l | < 10 % * | Mean |
| Chlorate | <0,003 mg/l below limit of quantification | 70 µg/l | < 4 % * | Mean |
| Chlorite | <0,010 mg/l below limit of quantification | 0.2 mg/l | < 5 % * | Mean |
| Chromium | <0,0004 mg/l below limit of quantification | 25 µg/l | < 2 % * | Mean |
| Copper | <0,005 mg/l below limit of quantification | 2 mg/l | < 0.3 % * | Mean |
| Cyanide | <0,005 mg/l below limit of quantification | 50 µg/l | < 10 % * | Mean |
| Fluoride | 0,11 mg/l | 1.5 mg/l | 7 % | Mean |
| Lead | <0,0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | Mean |
| Mercury | <0,0001 mg/l below limit of quantification | 1 µg/l | < 10 % * | Mean |
| Nickel | <0,002 mg/l below limit of quantification | 20 µg/l | < 10 % * | Mean |
| Nitrate | 9,2 mg/l | 50 mg/l | 18 % | Mean |
| Nitrite | 0,01 mg/l | 0.5 mg/l | 2 % | Mean |
| Pesticides — Total | <0,025 µg/l below limit of quantification | 0.5 µg/l | < 5 % * | Mean |
| Polycyclic aromatic hydrocarbons | <0,005 µg/l below limit of quantification | 0.1 µg/l | < 5 % * | Mean |
| Selenium | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Mean |
| Tetrachloroethene and Trichloroethene (sum) | <0,05 µg/l below limit of quantification | 10 µg/l | < 0.5 % * | Mean |
| Trihalomethanes — Total | <0,050 µg/l below limit of quantification | 50 µg/l | < 0.1 % * | Mean |
| Uranium | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | 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 (18)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | <0,010 mg/l below limit of quantification | 0.2 mg/l | < 5 % * | Mean |
| Ammonium | <0,05 mg/l below limit of quantification | 0.5 mg/l | < 10 % * | Mean |
| Calcite dissolution capacity | 1 mg/l | 5 mg/l CaCO3 | — | Mean |
| Chloride | 55 mg/l | 250 mg/l | 22 % | Mean |
| Clostridium perfringens (including spores) | 0 KBE/100 ml | 0/100 ml | — | Mean |
| Coliform bacteria | 0 KBE/100 ml | 0/100 ml | — | Mean |
| Colony count 22 °C | 0 KBE/ml | ohne anormale Veränderung | — | Mean |
| Colony count 36 °C | 0 KBE/ml | ohne anormale Veränderung | — | Mean |
| Colour | <0,10 1/m below limit of quantification | 0.5 m⁻¹ | — | Mean |
| Conductivity (25 °C) | 491 µS/cm | 2,790 µS/cm | — | Mean |
| Iron | <0,010 mg/l below limit of quantification | 0.2 mg/l | < 5 % * | Mean |
| Manganese | <0,002 mg/l below limit of quantification | 50 µg/l | < 4 % * | Mean |
| pH | 7,9 | 6,5–9,5 | — | Mean |
| Sodium | 41 mg/l | 200 mg/l | 21 % | Mean |
| Sulphate | 42 mg/l | 250 mg/l | 17 % | Mean |
| Temperature | 14,1 °C | — | — | Mean |
| Total organic carbon (TOC) | 0,8 mg/l | ohne anormale Veränderung | — | Mean |
| Turbidity | <0,05 FNU 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.
Radiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Indicative dose | <0,1 mSv/a below limit of quantification | 0.1 mSv/a | — | Mean |
| Radon-222 | <10 Bq/l below limit of quantification | 100 Bq/l | — | Mean |
Further parameters (11)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Acid capacity to pH 4.3 | 2,2 mmol/l | — | — | Mean |
| Base capacity to pH 8.2 | 0,06 mmol/l | — | — | Mean |
| Calcium | 42 mg/l | — | — | Mean |
| Carbonate hardness | 6,2 °dH | — | — | Mean |
| Hardness range (WRMG) | weich | — | — | Mean |
| Magnesium | 7,9 mg/l | — | — | Mean |
| Oxygen | 10,5 mg/l | — | — | Mean |
| Phosphate | 0,23 mg/l | — | — | Mean |
| Potassium | 4,4 mg/l | — | — | Mean |
| Silicate / silicic acid | 4,9 mg/l | — | — | Mean |
| Total hardness | 7,7 °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.gelsenwasser.de/fileadmin/twa/downloads/gelsenwasser/trinkwasseranalyse_essen.pdf · 2025 · retrieved on 11/07/2026
Postcodes in this zone: 59423 , 59425 , 59427
Show 11 more supply zones
Versorgungsgebiet der Stadtwerke Essen AG (Herkunft des Trinkwassers: Verbundwasserwerk Essen, Wassergewinnung Essen GmbH)
GelsenwasserAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
Water hardness
Hardness range 1,38
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 9 mg/l | 50 mg/l | 18 % | Median |
| Sulphate | 42 mg/l | 250 mg/l | 17 % | Median |
| Sodium | 41 mg/l | 200 mg/l | 21 % | Median |
Show all recorded parameters (17 — most recent value per parameter)
Chemical parameters (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 9 mg/l | 50 mg/l | 18 % | Median |
Indicator parameters (8)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcite dissolution capacity | 0,8 mg/l | 5 mg/l CaCO3 | — | Median |
| Chloride | 55 mg/l | 250 mg/l | 22 % | Median |
| Conductivity (25 °C) | 491 µS/cm | 2,790 µS/cm | — | Median |
| pH | 7,90 | 6,5–9,5 | — | Median |
| Sodium | 41 mg/l | 200 mg/l | 21 % | Median |
| Sulphate | 42 mg/l | 250 mg/l | 17 % | Median |
| Temperature | 14,1 °C | — | — | Median |
| Total organic carbon (TOC) | 0,8 mg/l | ohne anormale Veränderung | — | Median |
Further parameters (8)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Acid capacity to pH 4.3 | 2,20 mmol/l | — | — | Median |
| Base capacity to pH 8.2 | 0,06 mmol/l | — | — | Median |
| Calcium | 42 mg/l | — | — | Median |
| Hardness range (WRMG) | 1,38 mmol/l | — | — | Median |
| Magnesium | 7,9 mg/l | — | — | Median |
| Oxygen | 10,5 mg/l | — | — | Median |
| Potassium | 4,4 mg/l | — | — | Median |
| Silicate / silicic acid | 2,3 mg/l | — | — | Median |
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.gelsenwasser.de/fileadmin/Gelsenwasser/80_footer/8.1-tw_parameter/essen_inst.pdf · Median 2025 (Jahresmittelwert) · retrieved on 13/07/2026
Postcodes in this zone: 59423 , 59425 , 59427
Wasserwerk Bucholtwelmen
GelsenwasserAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
Water hardness
14.7 °dH
Hardness range hart
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 15 mg/l | 50 mg/l | 30 % | Mean |
| Lead | <0,0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | Mean |
| Escherichia coli (E. coli) | 0 KBE/100 ml | 0/100 ml | — | Mean |
| Sulphate | 83 mg/l | 250 mg/l | 33 % | Mean |
| Sodium | 15 mg/l | 200 mg/l | 8 % | 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 (57 — most recent value per parameter)
Microbiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 KBE/100 ml | 0/100 ml | — | Mean |
| Intestinal enterococci | 0 KBE/100 ml | 0/100 ml | — | Mean |
Chemical parameters (24)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | <0,05 µg/l below limit of quantification | 3 µg/l | < 2 % * | Mean |
| Antimony | <0,001 mg/l below limit of quantification | 5 µg/l | < 20 % * | Mean |
| Arsenic | <0,0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | Mean |
| Benzene | <0,05 µg/l below limit of quantification | 1 µg/l | < 5 % * | Mean |
| Benzo(a)pyrene | <0,0025 µg/l below limit of quantification | 10 ng/l | < 25 % * | Mean |
| Bisphenol A | <0,015 µg/l below limit of quantification | 2.5 µg/l | < 0.6 % * | Mean |
| Boron | 0,05 mg/l | 1 mg/l | 5 % | Mean |
| Bromate | <0,0030 mg/l below limit of quantification | 10 µg/l | < 30 % * | Mean |
| Cadmium | <0,0003 mg/l below limit of quantification | 3 µg/l | < 10 % * | Mean |
| Chromium | <0,0004 mg/l below limit of quantification | 25 µg/l | < 2 % * | Mean |
| Copper | <0,005 mg/l below limit of quantification | 2 mg/l | < 0.3 % * | Mean |
| Cyanide | <0,005 mg/l below limit of quantification | 50 µg/l | < 10 % * | Mean |
| Fluoride | 0,1 mg/l | 1.5 mg/l | 7 % | Mean |
| Lead | <0,0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | Mean |
| Mercury | <0,0001 mg/l below limit of quantification | 1 µg/l | < 10 % * | Mean |
| Nickel | <0,002 mg/l below limit of quantification | 20 µg/l | < 10 % * | Mean |
| Nitrate | 15 mg/l | 50 mg/l | 30 % | Mean |
| Nitrite | <0,01 mg/l below limit of quantification | 0.5 mg/l | < 2 % * | Mean |
| Pesticides — Total | <0,025 µg/l below limit of quantification | 0.5 µg/l | < 5 % * | Mean |
| Polycyclic aromatic hydrocarbons | <0,005 µg/l below limit of quantification | 0.1 µg/l | < 5 % * | Mean |
| Selenium | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Mean |
| Tetrachloroethene and Trichloroethene (sum) | 0,06 µg/l | 10 µg/l | 0.6 % | Mean |
| Trihalomethanes — Total | <0,050 µg/l below limit of quantification | 50 µg/l | < 0.1 % * | Mean |
| Uranium | 0,001 mg/l | 10 µg/l | 10 % | 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 (18)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | <0,010 mg/l below limit of quantification | 0.2 mg/l | < 5 % * | Mean |
| Ammonium | <0,05 mg/l below limit of quantification | 0.5 mg/l | < 10 % * | Mean |
| Calcite dissolution capacity | 2 mg/l | 5 mg/l CaCO3 | — | Mean |
| Chloride | 27 mg/l | 250 mg/l | 11 % | Mean |
| Clostridium perfringens (including spores) | 0 KBE/100 ml | 0/100 ml | — | Mean |
| Coliform bacteria | 0 KBE/100 ml | 0/100 ml | — | Mean |
| Colony count 22 °C | 0 KBE/ml | ohne anormale Veränderung | — | Mean |
| Colony count 36 °C | 0 KBE/ml | ohne anormale Veränderung | — | Mean |
| Colour | 0,1 1/m | 0.5 m⁻¹ | — | Mean |
| Conductivity (25 °C) | 606 µS/cm | 2,790 µS/cm | — | Mean |
| Iron | <0,010 mg/l below limit of quantification | 0.2 mg/l | < 5 % * | Mean |
| Manganese | <0,002 mg/l below limit of quantification | 50 µg/l | < 4 % * | Mean |
| pH | 7,42 | 6,5–9,5 | — | Mean |
| Sodium | 15 mg/l | 200 mg/l | 8 % | Mean |
| Sulphate | 83 mg/l | 250 mg/l | 33 % | Mean |
| Temperature | 11,1 °C | — | — | Mean |
| Total organic carbon (TOC) | 2,1 mg/l | ohne anormale Veränderung | — | Mean |
| Turbidity | 0,05 FNU | 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.
Radiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Indicative dose | <0,1 mSv/a below limit of quantification | 0.1 mSv/a | — | Mean |
| Radon-222 | 13 Bq/l | 100 Bq/l | — | Mean |
Further parameters (11)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Acid capacity to pH 4.3 | 3,45 mmol/l | — | — | Mean |
| Base capacity to pH 8.2 | 0,34 mmol/l | — | — | Mean |
| Calcium | 93 mg/l | — | — | Mean |
| Carbonate hardness | 9,7 °dH | — | — | Mean |
| Hardness range (WRMG) | hart | — | — | Mean |
| Magnesium | 7,6 mg/l | — | — | Mean |
| Oxygen | 6,8 mg/l | — | — | Mean |
| Phosphate | 0,06 mg/l | — | — | Mean |
| Potassium | 5,5 mg/l | — | — | Mean |
| Silicate / silicic acid | 12,4 mg/l | — | — | Mean |
| Total hardness | 14,7 °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.gelsenwasser.de/fileadmin/twa/downloads/huenxe_voerde/trinkwasseranalyse_bucholtwelmen.pdf · 2025 · retrieved on 13/07/2026
Postcodes in this zone: 59423 , 59425 , 59427
Wasserwerk Echthausen
Wasserwerke Westfalen GmbHAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
Water hardness
7.5 °dH
Hardness range weich
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 11,7 mg/l | 50 mg/l | 23 % | Mean · Wasserwerk Echthausen · Source [1] |
| Lead | < 1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Mean · Wasserwerk Echthausen · Source [1] |
| Escherichia coli (E. coli) | 0 KBE/100 ml | 0/100 ml | — | Mean · Wasserwerk Echthausen · Source [1] |
| Sulphate | 33 mg/l | 250 mg/l | 13 % | Mean · Wasserwerk Echthausen · Source [1] |
| Sodium | 23 mg/l | 200 mg/l | 12 % | Mean · Wasserwerk Echthausen · Source [1] |
* 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 (70 — most recent value per parameter)
Microbiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 KBE/100 ml | 0/100 ml | — | Mean · Wasserwerk Echthausen · Source [1] |
| Intestinal enterococci | 0 KBE/100 ml | 0/100 ml | — | Mean · Wasserwerk Echthausen · Source [1] |
Chemical parameters (26)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | <0,05 µg/l below limit of quantification | 3 µg/l | < 2 % * | Mean · Source [2] |
| Antimony | < 1,0 µg/l below limit of quantification | 5 µg/l | < 20 % * | Mean · Wasserwerk Echthausen · Source [1] |
| Arsenic | < 0,5 µg/l below limit of quantification | 10 µg/l | < 5 % * | Mean · Wasserwerk Echthausen · Source [1] |
| Benzene | <0,05 µg/l below limit of quantification | 1 µg/l | < 5 % * | Mean · Source [2] |
| Benzo(a)pyrene | <0,0025 µg/l below limit of quantification | 10 ng/l | < 25 % * | Mean · Source [2] |
| Bisphenol A | <0,015 µg/l below limit of quantification | 2.5 µg/l | < 0.6 % * | Mean · Source [2] |
| Boron | < 0,05 mg/l below limit of quantification | 1 mg/l | < 5 % * | Mean · Wasserwerk Echthausen · Source [1] |
| Bromate | < 0,0030 mg/l below limit of quantification | 10 µg/l | < 30 % * | Mean · Wasserwerk Echthausen · Source [1] |
| Cadmium | < 0,3 µg/l below limit of quantification | 3 µg/l | < 10 % * | Mean · Wasserwerk Echthausen · Source [1] |
| Chlorate | < 0,00 mg/l below limit of quantification | 70 µg/l | < 0 % * | Mean · Wasserwerk Echthausen · Source [1] |
| Chlorite | < 0,01 mg/l below limit of quantification | 0.2 mg/l | < 5 % * | Mean · Wasserwerk Echthausen · Source [1] |
| Chromium | < 0,4 µg/l below limit of quantification | 25 µg/l | < 2 % * | Mean · Wasserwerk Echthausen · Source [1] |
| Copper | < 5 µg/l below limit of quantification | 2 mg/l | < 0.3 % * | Mean · Wasserwerk Echthausen · Source [1] |
| Cyanide | < 0,005 mg/l below limit of quantification | 50 µg/l | < 10 % * | Mean · Wasserwerk Echthausen · Source [1] |
| Fluoride | 0,07 mg/l | 1.5 mg/l | 5 % | Mean · Wasserwerk Echthausen · Source [1] |
| Lead | < 1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Mean · Wasserwerk Echthausen · Source [1] |
| Mercury | < 0,10 µg/l below limit of quantification | 1 µg/l | < 10 % * | Mean · Wasserwerk Echthausen · Source [1] |
| Nickel | < 2 µg/l below limit of quantification | 20 µg/l | < 10 % * | Mean · Wasserwerk Echthausen · Source [1] |
| Nitrate | 11,7 mg/l | 50 mg/l | 23 % | Mean · Wasserwerk Echthausen · Source [1] |
| Nitrite | 0,01 mg/l | 0.5 mg/l | 2 % | Mean · Wasserwerk Echthausen · Source [1] |
| Pesticides — Total | <0,025 µg/l below limit of quantification | 0.5 µg/l | < 5 % * | Mean · Source [2] |
| Polycyclic aromatic hydrocarbons | <0,005 µg/l below limit of quantification | 0.1 µg/l | < 5 % * | Mean · Source [2] |
| Selenium | < 1,0 µg/l below limit of quantification | 10 µg/l | < 10 % * | Mean · Wasserwerk Echthausen · Source [1] |
| Tetrachloroethene and Trichloroethene (sum) | <0,05 µg/l below limit of quantification | 10 µg/l | < 0.5 % * | Mean · Source [2] |
| Trihalomethanes — Total | <0,050 µg/l below limit of quantification | 50 µg/l | < 0.1 % * | Mean · Source [2] |
| Uranium | < 1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Mean · Wasserwerk Echthausen · Source [1] |
* 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 | < 10 µg/l below limit of quantification | 0.2 mg/l | < 5 % * | Mean · Wasserwerk Echthausen · Source [1] |
| Ammonium | < 0,05 mg/l below limit of quantification | 0.5 mg/l | < 10 % * | Mean · Wasserwerk Echthausen · Source [1] |
| Calcite dissolution capacity | 0 mg/l | 5 mg/l CaCO3 | — | Mean · Source [2] |
| Chloride | 37 mg/l | 250 mg/l | 15 % | Mean · Wasserwerk Echthausen · Source [1] |
| Clostridium perfringens (including spores) | 0 KBE/100 ml | 0/100 ml | — | Mean · Wasserwerk Echthausen · Source [1] |
| Coliform bacteria | 0 KBE/100 ml | 0/100 ml | — | Mean · Wasserwerk Echthausen · Source [1] |
| Colony count 22 °C | 0 KBE/ml | ohne anormale Veränderung | — | Mean · Wasserwerk Echthausen · Source [1] |
| Colony count 36 °C | 0 KBE/ml | ohne anormale Veränderung | — | Mean · Wasserwerk Echthausen · Source [1] |
| Colour | < 0,10 1/m below limit of quantification | 0.5 m⁻¹ | — | Mean · Wasserwerk Echthausen · Source [1] |
| Conductivity (25 °C) | 403 µS/cm | 2,790 µS/cm | — | Mean · Wasserwerk Echthausen · Source [1] |
| Iron | < 0,010 mg/l below limit of quantification | 0.2 mg/l | < 5 % * | Mean · Wasserwerk Echthausen · Source [1] |
| Manganese | < 0,002 mg/l below limit of quantification | 50 µg/l | < 4 % * | Mean · Wasserwerk Echthausen · Source [1] |
| Odour | unauffällig | für den Verbraucher annehmbar | — | Mean · Wasserwerk Echthausen · Source [1] |
| pH | 7,86 | 6,5–9,5 | — | Mean · Wasserwerk Echthausen · Source [1] |
| Sodium | 23 mg/l | 200 mg/l | 12 % | Mean · Wasserwerk Echthausen · Source [1] |
| Sulphate | 33 mg/l | 250 mg/l | 13 % | Mean · Wasserwerk Echthausen · Source [1] |
| Taste | unauffällig | für den Verbraucher annehmbar | — | Mean · Wasserwerk Echthausen · Source [1] |
| Temperature | 5,2 °C | — | — | Mean · Wasserwerk Echthausen · Source [1] |
| Total organic carbon (TOC) | 0,9 mg/l | ohne anormale Veränderung | — | Mean · Wasserwerk Echthausen · Source [1] |
| Turbidity | < 0,05 FNU below limit of quantification | 1 NTU | — | Mean · Wasserwerk Echthausen · Source [1] |
* 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.
Radiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Indicative dose | <0,1 mSv/a below limit of quantification | 0.1 mSv/a | — | Mean · Source [2] |
| Radon-222 | <10 Bq/l below limit of quantification | 100 Bq/l | — | Mean · Source [2] |
Further parameters (20)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Acid capacity to pH 4.3 | 1,96 mmol/l | — | — | Mean · Wasserwerk Echthausen · Source [1] |
| Barium | 18 µg/l | — | — | Mean · Wasserwerk Echthausen · Source [1] |
| Base capacity to pH 8.2 | 0,05 mmol/l | — | — | Mean · Wasserwerk Echthausen · Source [1] |
| Bromide | < 0,05 mg/l below limit of quantification | — | — | Mean · Wasserwerk Echthausen · Source [1] |
| Calcium | 44 mg/l | — | — | Mean · Wasserwerk Echthausen · Source [1] |
| Carbonate hardness | 5,5 °dH | — | — | Mean · Wasserwerk Echthausen · Source [1] |
| Dissolved organic carbon (DOC) | 0,8 mg/l | — | — | Mean · Wasserwerk Echthausen · Source [1] |
| Gadolinium | < 0,1 µg/l below limit of quantification | — | — | Mean · Wasserwerk Echthausen · Source [1] |
| Hardness range (WRMG) | weich | — | — | Mean · Wasserwerk Echthausen · Source [1] |
| Lanthanum | < 0,1 µg/l below limit of quantification | — | — | Mean · Wasserwerk Echthausen · Source [1] |
| Lithium | < 5 µg/l below limit of quantification | — | — | Mean · Wasserwerk Echthausen · Source [1] |
| Magnesium | 6 mg/l | — | — | Mean · Wasserwerk Echthausen · Source [1] |
| Oxygen | 13,1 mg/l | — | — | Mean · Wasserwerk Echthausen · Source [1] |
| Phosphate | 0,12 mg/l | — | — | Mean · Wasserwerk Echthausen · Source [1] |
| Potassium | 2 mg/l | — | — | Mean · Wasserwerk Echthausen · Source [1] |
| Silicate / silicic acid | 1700 µg/l | — | — | Mean · Wasserwerk Echthausen · Source [1] |
| Strontium | 0,17 mg/l | — | — | Mean · Wasserwerk Echthausen · Source [1] |
| Total hardness | 7,5 °dH | — | — | Mean · Wasserwerk Echthausen · Source [1] |
| Vanadium | < 0,5 µg/l below limit of quantification | — | — | Mean · Wasserwerk Echthausen · Source [1] |
| Zinc | < 5 µg/l below limit of quantification | — | — | Mean · Wasserwerk Echthausen · Source [1] |
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.
Sources: [1] https://www.gelsenwasser.de/twa-gelsenwasser?apikey=edr56zgt54 · Quartals-Mittel 2026/1 · Quartals-Mittel 2026/1 · retrieved on 17/08/2026 [2] https://www.gelsenwasser.de/fileadmin/twa/downloads/www/trinkwasseranalyse_echthausen.pdf · Jahresmittelwert 2025 · retrieved on 25/07/2026
Postcodes in this zone: 59423 , 59425 , 59427
Wasserwerk Halingen
Wasserwerke Westfalen GmbHAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
Water hardness
8.3 °dH
Hardness range weich
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 13,3 mg/l | 50 mg/l | 27 % | Mean · Wasserwerk Halingen · Source [1] |
| Lead | < 1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Mean · Wasserwerk Halingen · Source [1] |
| Escherichia coli (E. coli) | 0 KBE/100 ml | 0/100 ml | — | Mean · Wasserwerk Halingen · Source [1] |
| Sulphate | 36 mg/l | 250 mg/l | 14 % | Mean · Wasserwerk Halingen · Source [1] |
| Sodium | 31 mg/l | 200 mg/l | 16 % | Mean · Wasserwerk Halingen · Source [1] |
* 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 (70 — most recent value per parameter)
Microbiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 KBE/100 ml | 0/100 ml | — | Mean · Wasserwerk Halingen · Source [1] |
| Intestinal enterococci | 0 KBE/100 ml | 0/100 ml | — | Mean · Wasserwerk Halingen · Source [1] |
Chemical parameters (26)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | <0,05 µg/l below limit of quantification | 3 µg/l | < 2 % * | Mean · Source [2] |
| Antimony | < 1,0 µg/l below limit of quantification | 5 µg/l | < 20 % * | Mean · Wasserwerk Halingen · Source [1] |
| Arsenic | < 0,5 µg/l below limit of quantification | 10 µg/l | < 5 % * | Mean · Wasserwerk Halingen · Source [1] |
| Benzene | <0,05 µg/l below limit of quantification | 1 µg/l | < 5 % * | Mean · Source [2] |
| Benzo(a)pyrene | <0,0025 µg/l below limit of quantification | 10 ng/l | < 25 % * | Mean · Source [2] |
| Bisphenol A | <0,015 µg/l below limit of quantification | 2.5 µg/l | < 0.6 % * | Mean · Source [2] |
| Boron | < 0,05 mg/l below limit of quantification | 1 mg/l | < 5 % * | Mean · Wasserwerk Halingen · Source [1] |
| Bromate | < 0,0030 mg/l below limit of quantification | 10 µg/l | < 30 % * | Mean · Wasserwerk Halingen · Source [1] |
| Cadmium | < 0,3 µg/l below limit of quantification | 3 µg/l | < 10 % * | Mean · Wasserwerk Halingen · Source [1] |
| Chlorate | < 0,00 mg/l below limit of quantification | 70 µg/l | < 0 % * | Mean · Wasserwerk Halingen · Source [1] |
| Chlorite | < 0,01 mg/l below limit of quantification | 0.2 mg/l | < 5 % * | Mean · Wasserwerk Halingen · Source [1] |
| Chromium | 0,4 µg/l | 25 µg/l | 2 % | Mean · Wasserwerk Halingen · Source [1] |
| Copper | < 5 µg/l below limit of quantification | 2 mg/l | < 0.3 % * | Mean · Wasserwerk Halingen · Source [1] |
| Cyanide | < 0,005 mg/l below limit of quantification | 50 µg/l | < 10 % * | Mean · Wasserwerk Halingen · Source [1] |
| Fluoride | 0,07 mg/l | 1.5 mg/l | 5 % | Mean · Wasserwerk Halingen · Source [1] |
| Lead | < 1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Mean · Wasserwerk Halingen · Source [1] |
| Mercury | < 0,10 µg/l below limit of quantification | 1 µg/l | < 10 % * | Mean · Wasserwerk Halingen · Source [1] |
| Nickel | < 2 µg/l below limit of quantification | 20 µg/l | < 10 % * | Mean · Wasserwerk Halingen · Source [1] |
| Nitrate | 13,3 mg/l | 50 mg/l | 27 % | Mean · Wasserwerk Halingen · Source [1] |
| Nitrite | 0,01 mg/l | 0.5 mg/l | 2 % | Mean · Wasserwerk Halingen · Source [1] |
| Pesticides — Total | <0,025 µg/l below limit of quantification | 0.5 µg/l | < 5 % * | Mean · Source [2] |
| Polycyclic aromatic hydrocarbons | <0,005 µg/l below limit of quantification | 0.1 µg/l | < 5 % * | Mean · Source [2] |
| Selenium | < 1,0 µg/l below limit of quantification | 10 µg/l | < 10 % * | Mean · Wasserwerk Halingen · Source [1] |
| Tetrachloroethene and Trichloroethene (sum) | 0,06 µg/l | 10 µg/l | 0.6 % | Mean · Source [2] |
| Trihalomethanes — Total | <0,050 µg/l below limit of quantification | 50 µg/l | < 0.1 % * | Mean · Source [2] |
| Uranium | < 1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Mean · Wasserwerk Halingen · Source [1] |
* 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 | < 10 µg/l below limit of quantification | 0.2 mg/l | < 5 % * | Mean · Wasserwerk Halingen · Source [1] |
| Ammonium | < 0,05 mg/l below limit of quantification | 0.5 mg/l | < 10 % * | Mean · Wasserwerk Halingen · Source [1] |
| Calcite dissolution capacity | 1 mg/l | 5 mg/l CaCO3 | — | Mean · Source [2] |
| Chloride | 48 mg/l | 250 mg/l | 19 % | Mean · Wasserwerk Halingen · Source [1] |
| Clostridium perfringens (including spores) | 0 KBE/100 ml | 0/100 ml | — | Mean · Wasserwerk Halingen · Source [1] |
| Coliform bacteria | 0 KBE/100 ml | 0/100 ml | — | Mean · Wasserwerk Halingen · Source [1] |
| Colony count 22 °C | 0 KBE/ml | ohne anormale Veränderung | — | Mean · Wasserwerk Halingen · Source [1] |
| Colony count 36 °C | 0 KBE/ml | ohne anormale Veränderung | — | Mean · Wasserwerk Halingen · Source [1] |
| Colour | < 0,10 1/m below limit of quantification | 0.5 m⁻¹ | — | Mean · Wasserwerk Halingen · Source [1] |
| Conductivity (25 °C) | 459 µS/cm | 2,790 µS/cm | — | Mean · Wasserwerk Halingen · Source [1] |
| Iron | < 0,010 mg/l below limit of quantification | 0.2 mg/l | < 5 % * | Mean · Wasserwerk Halingen · Source [1] |
| Manganese | < 0,002 mg/l below limit of quantification | 50 µg/l | < 4 % * | Mean · Wasserwerk Halingen · Source [1] |
| Odour | unauffällig | für den Verbraucher annehmbar | — | Mean · Wasserwerk Halingen · Source [1] |
| pH | 7,84 | 6,5–9,5 | — | Mean · Wasserwerk Halingen · Source [1] |
| Sodium | 31 mg/l | 200 mg/l | 16 % | Mean · Wasserwerk Halingen · Source [1] |
| Sulphate | 36 mg/l | 250 mg/l | 14 % | Mean · Wasserwerk Halingen · Source [1] |
| Taste | unauffällig | für den Verbraucher annehmbar | — | Mean · Wasserwerk Halingen · Source [1] |
| Temperature | 6,1 °C | — | — | Mean · Wasserwerk Halingen · Source [1] |
| Total organic carbon (TOC) | 0,9 mg/l | ohne anormale Veränderung | — | Mean · Wasserwerk Halingen · Source [1] |
| Turbidity | < 0,05 FNU below limit of quantification | 1 NTU | — | Mean · Wasserwerk Halingen · Source [1] |
* 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.
Radiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Indicative dose | <0,1 mSv/a below limit of quantification | 0.1 mSv/a | — | Mean · Source [2] |
| Radon-222 | 15 Bq/l | 100 Bq/l | — | Mean · Source [2] |
Further parameters (20)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Acid capacity to pH 4.3 | 2,19 mmol/l | — | — | Mean · Wasserwerk Halingen · Source [1] |
| Barium | 22 µg/l | — | — | Mean · Wasserwerk Halingen · Source [1] |
| Base capacity to pH 8.2 | 0,07 mmol/l | — | — | Mean · Wasserwerk Halingen · Source [1] |
| Bromide | < 0,05 mg/l below limit of quantification | — | — | Mean · Wasserwerk Halingen · Source [1] |
| Calcium | 49 mg/l | — | — | Mean · Wasserwerk Halingen · Source [1] |
| Carbonate hardness | 6,1 °dH | — | — | Mean · Wasserwerk Halingen · Source [1] |
| Dissolved organic carbon (DOC) | 0,8 mg/l | — | — | Mean · Wasserwerk Halingen · Source [1] |
| Gadolinium | < 0,1 µg/l below limit of quantification | — | — | Mean · Wasserwerk Halingen · Source [1] |
| Hardness range (WRMG) | weich | — | — | Mean · Wasserwerk Halingen · Source [1] |
| Lanthanum | < 0,1 µg/l below limit of quantification | — | — | Mean · Wasserwerk Halingen · Source [1] |
| Lithium | 5 µg/l | — | — | Mean · Wasserwerk Halingen · Source [1] |
| Magnesium | 6,3 mg/l | — | — | Mean · Wasserwerk Halingen · Source [1] |
| Oxygen | 11,1 mg/l | — | — | Mean · Wasserwerk Halingen · Source [1] |
| Phosphate | 0,15 mg/l | — | — | Mean · Wasserwerk Halingen · Source [1] |
| Potassium | 3 mg/l | — | — | Mean · Wasserwerk Halingen · Source [1] |
| Silicate / silicic acid | 2100 µg/l | — | — | Mean · Wasserwerk Halingen · Source [1] |
| Strontium | 0,17 mg/l | — | — | Mean · Wasserwerk Halingen · Source [1] |
| Total hardness | 8,3 °dH | — | — | Mean · Wasserwerk Halingen · Source [1] |
| Vanadium | < 0,5 µg/l below limit of quantification | — | — | Mean · Wasserwerk Halingen · Source [1] |
| Zinc | < 5 µg/l below limit of quantification | — | — | Mean · Wasserwerk Halingen · Source [1] |
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.
Sources: [1] https://www.gelsenwasser.de/twa-gelsenwasser?apikey=edr56zgt54 · Quartals-Mittel 2026/1 · Quartals-Mittel 2026/1 · retrieved on 17/08/2026 [2] https://www.gelsenwasser.de/fileadmin/twa/downloads/www/trinkwasseranalyse_halingen_01.pdf · 2025 · retrieved on 25/07/2026
Postcodes in this zone: 59423 , 59425 , 59427
Wasserwerk Haltern
GelsenwasserAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
Water hardness
Hardness range 2,02
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 12 mg/l | 50 mg/l | 24 % | Median |
| Sulphate | 48 mg/l | 250 mg/l | 19 % | Median |
| Sodium | 19 mg/l | 200 mg/l | 9 % | Median |
Show all recorded parameters (17 — most recent value per parameter)
Chemical parameters (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 12 mg/l | 50 mg/l | 24 % | Median |
Indicator parameters (8)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcite dissolution capacity | 0,2 mg/l | 5 mg/l CaCO3 | — | Median |
| Chloride | 26 mg/l | 250 mg/l | 10 % | Median |
| Conductivity (25 °C) | 487 µS/cm | 2,790 µS/cm | — | Median |
| pH | 7,55 | 6,5–9,5 | — | Median |
| Sodium | 19 mg/l | 200 mg/l | 9 % | Median |
| Sulphate | 48 mg/l | 250 mg/l | 19 % | Median |
| Temperature | 13,3 °C | — | — | Median |
| Total organic carbon (TOC) | 3,0 mg/l | ohne anormale Veränderung | — | Median |
Further parameters (8)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Acid capacity to pH 4.3 | 2,97 mmol/l | — | — | Median |
| Base capacity to pH 8.2 | 0,21 mmol/l | — | — | Median |
| Calcium | 73 mg/l | — | — | Median |
| Hardness range (WRMG) | 2,02 mmol/l | — | — | Median |
| Magnesium | 4,8 mg/l | — | — | Median |
| Oxygen | 6,9 mg/l | — | — | Median |
| Potassium | 5,3 mg/l | — | — | Median |
| Silicate / silicic acid | 4,0 mg/l | — | — | Median |
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.gelsenwasser.de/fileadmin/Gelsenwasser/80_footer/8.1-tw_parameter/haltern_inst.pdf · 2025 · retrieved on 25/07/2026
Postcodes in this zone: 59423 , 59425 , 59427
Wasserwerk Haltern, Gelsenwasser AG
GelsenwasserAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
Water hardness
Hardness range 2,02
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 12 mg/l | 50 mg/l | 24 % | Median |
| Sulphate | 48 mg/l | 250 mg/l | 19 % | Median |
| Sodium | 19 mg/l | 200 mg/l | 9 % | Median |
Show all recorded parameters (17 — most recent value per parameter)
Chemical parameters (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 12 mg/l | 50 mg/l | 24 % | Median |
Indicator parameters (8)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcite dissolution capacity | 0,2 mg/l | 5 mg/l CaCO3 | — | Median |
| Chloride | 26 mg/l | 250 mg/l | 10 % | Median |
| Conductivity (25 °C) | 487 µS/cm | 2,790 µS/cm | — | Median |
| pH | 7,55 | 6,5–9,5 | — | Median |
| Sodium | 19 mg/l | 200 mg/l | 9 % | Median |
| Sulphate | 48 mg/l | 250 mg/l | 19 % | Median |
| Temperature | 13,3 °C | — | — | Median |
| Total organic carbon (TOC) | 3,0 mg/l | ohne anormale Veränderung | — | Median |
Further parameters (8)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Acid capacity to pH 4.3 | 2,97 mmol/l | — | — | Median |
| Base capacity to pH 8.2 | 0,21 mmol/l | — | — | Median |
| Calcium | 73 mg/l | — | — | Median |
| Hardness range (WRMG) | 2,02 mmol/l | — | — | Median |
| Magnesium | 4,8 mg/l | — | — | Median |
| Oxygen | 6,9 mg/l | — | — | Median |
| Potassium | 5,3 mg/l | — | — | Median |
| Silicate / silicic acid | 4,0 mg/l | — | — | Median |
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.gelsenwasser.de/fileadmin/Gelsenwasser/80_footer/8.1-tw_parameter/haltern_inst.pdf · 2025 · retrieved on 25/07/2026
Postcodes in this zone: 59423 , 59425 , 59427
Wasserwerk Hengsen
Wasserwerke Westfalen GmbHAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
Water hardness
8.5 °dH
Hardness range mittel
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 13,9 mg/l | 50 mg/l | 28 % | Mean · Wasserwerk Hengsen |
| Lead | < 1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Mean · Wasserwerk Hengsen |
| Escherichia coli (E. coli) | 0 KBE/100 ml | 0/100 ml | — | Mean · Wasserwerk Hengsen |
| Sulphate | 37 mg/l | 250 mg/l | 15 % | Mean · Wasserwerk Hengsen |
| Sodium | 28 mg/l | 200 mg/l | 14 % | Mean · Wasserwerk Hengsen |
* 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 KBE/100 ml | 0/100 ml | — | Mean · Wasserwerk Hengsen |
| Intestinal enterococci | 0 KBE/100 ml | 0/100 ml | — | Mean · Wasserwerk Hengsen |
Chemical parameters (18)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Antimony | < 1,0 µg/l below limit of quantification | 5 µg/l | < 20 % * | Mean · Wasserwerk Hengsen |
| Arsenic | < 0,5 µg/l below limit of quantification | 10 µg/l | < 5 % * | Mean · Wasserwerk Hengsen |
| Boron | < 0,05 mg/l below limit of quantification | 1 mg/l | < 5 % * | Mean · Wasserwerk Hengsen |
| Bromate | < 0,0030 mg/l below limit of quantification | 10 µg/l | < 30 % * | Mean · Wasserwerk Hengsen |
| Cadmium | < 0,3 µg/l below limit of quantification | 3 µg/l | < 10 % * | Mean · Wasserwerk Hengsen |
| Chlorate | < 0,00 mg/l below limit of quantification | 70 µg/l | < 0 % * | Mean · Wasserwerk Hengsen |
| Chlorite | < 0,01 mg/l below limit of quantification | 0.2 mg/l | < 5 % * | Mean · Wasserwerk Hengsen |
| Chromium | < 0,4 µg/l below limit of quantification | 25 µg/l | < 2 % * | Mean · Wasserwerk Hengsen |
| Copper | < 5 µg/l below limit of quantification | 2 mg/l | < 0.3 % * | Mean · Wasserwerk Hengsen |
| Cyanide | < 0,005 mg/l below limit of quantification | 50 µg/l | < 10 % * | Mean · Wasserwerk Hengsen |
| Fluoride | 0,08 mg/l | 1.5 mg/l | 5 % | Mean · Wasserwerk Hengsen |
| Lead | < 1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Mean · Wasserwerk Hengsen |
| Mercury | < 0,10 µg/l below limit of quantification | 1 µg/l | < 10 % * | Mean · Wasserwerk Hengsen |
| Nickel | < 2 µg/l below limit of quantification | 20 µg/l | < 10 % * | Mean · Wasserwerk Hengsen |
| Nitrate | 13,9 mg/l | 50 mg/l | 28 % | Mean · Wasserwerk Hengsen |
| Nitrite | 0,01 mg/l | 0.5 mg/l | 2 % | Mean · Wasserwerk Hengsen |
| Selenium | < 1,0 µg/l below limit of quantification | 10 µg/l | < 10 % * | Mean · Wasserwerk Hengsen |
| Uranium | < 1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Mean · Wasserwerk Hengsen |
* 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 (19)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | < 10 µg/l below limit of quantification | 0.2 mg/l | < 5 % * | Mean · Wasserwerk Hengsen |
| Ammonium | < 0,05 mg/l below limit of quantification | 0.5 mg/l | < 10 % * | Mean · Wasserwerk Hengsen |
| Chloride | 47 mg/l | 250 mg/l | 19 % | Mean · Wasserwerk Hengsen |
| Clostridium perfringens (including spores) | 0 KBE/100 ml | 0/100 ml | — | Mean · Wasserwerk Hengsen |
| Coliform bacteria | 0 KBE/100 ml | 0/100 ml | — | Mean · Wasserwerk Hengsen |
| Colony count 22 °C | 0 KBE/ml | ohne anormale Veränderung | — | Mean · Wasserwerk Hengsen |
| Colony count 36 °C | 0 KBE/ml | ohne anormale Veränderung | — | Mean · Wasserwerk Hengsen |
| Colour | < 0,10 1/m below limit of quantification | 0.5 m⁻¹ | — | Mean · Wasserwerk Hengsen |
| Conductivity (25 °C) | 455 µS/cm | 2,790 µS/cm | — | Mean · Wasserwerk Hengsen |
| Iron | < 0,010 mg/l below limit of quantification | 0.2 mg/l | < 5 % * | Mean · Wasserwerk Hengsen |
| Manganese | < 0,002 mg/l below limit of quantification | 50 µg/l | < 4 % * | Mean · Wasserwerk Hengsen |
| Odour | unauffällig | für den Verbraucher annehmbar | — | Mean · Wasserwerk Hengsen |
| pH | 7,96 | 6,5–9,5 | — | Mean · Wasserwerk Hengsen |
| Sodium | 28 mg/l | 200 mg/l | 14 % | Mean · Wasserwerk Hengsen |
| Sulphate | 37 mg/l | 250 mg/l | 15 % | Mean · Wasserwerk Hengsen |
| Taste | unauffällig | für den Verbraucher annehmbar | — | Mean · Wasserwerk Hengsen |
| Temperature | 6,6 °C | — | — | Mean · Wasserwerk Hengsen |
| Total organic carbon (TOC) | 0,9 mg/l | ohne anormale Veränderung | — | Mean · Wasserwerk Hengsen |
| Turbidity | < 0,05 FNU below limit of quantification | 1 NTU | — | Mean · Wasserwerk Hengsen |
* 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 (20)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Acid capacity to pH 4.3 | 2,13 mmol/l | — | — | Mean · Wasserwerk Hengsen |
| Barium | 24 µg/l | — | — | Mean · Wasserwerk Hengsen |
| Base capacity to pH 8.2 | 0,05 mmol/l | — | — | Mean · Wasserwerk Hengsen |
| Bromide | < 0,05 mg/l below limit of quantification | — | — | Mean · Wasserwerk Hengsen |
| Calcium | 50 mg/l | — | — | Mean · Wasserwerk Hengsen |
| Carbonate hardness | 6 °dH | — | — | Mean · Wasserwerk Hengsen |
| Dissolved organic carbon (DOC) | 0,9 mg/l | — | — | Mean · Wasserwerk Hengsen |
| Gadolinium | < 0,1 µg/l below limit of quantification | — | — | Mean · Wasserwerk Hengsen |
| Hardness range (WRMG) | mittel | — | — | Mean · Wasserwerk Hengsen |
| Lanthanum | < 0,1 µg/l below limit of quantification | — | — | Mean · Wasserwerk Hengsen |
| Lithium | 5 µg/l | — | — | Mean · Wasserwerk Hengsen |
| Magnesium | 6,5 mg/l | — | — | Mean · Wasserwerk Hengsen |
| Oxygen | 12,8 mg/l | — | — | Mean · Wasserwerk Hengsen |
| Phosphate | 0,12 mg/l | — | — | Mean · Wasserwerk Hengsen |
| Potassium | 3 mg/l | — | — | Mean · Wasserwerk Hengsen |
| Silicate / silicic acid | 2300 µg/l | — | — | Mean · Wasserwerk Hengsen |
| Strontium | 0,17 mg/l | — | — | Mean · Wasserwerk Hengsen |
| Total hardness | 8,5 °dH | — | — | Mean · Wasserwerk Hengsen |
| Vanadium | < 0,5 µg/l below limit of quantification | — | — | Mean · Wasserwerk Hengsen |
| Zinc | < 5 µg/l below limit of quantification | — | — | Mean · Wasserwerk Hengsen |
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.gelsenwasser.de/twa-gelsenwasser?apikey=edr56zgt54 · Quartals-Mittel 2026/1 · Quartals-Mittel 2026/1 · retrieved on 17/08/2026
Postcodes in this zone: 59423 , 59425 , 59427
Wasserwerk Hengsen (Pumpwerk Hengsen, 00-0260)
Wasserwerke Westfalen GmbHAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
Water hardness
8.2 °dH
Hardness range weich
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 12,1 mg/l | 50 mg/l | 24 % | Mean |
| Lead | <0,0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | Mean |
| Escherichia coli (E. coli) | 0 KBE/100 ml | 0/100 ml | — | Mean |
| Sulphate | 35 mg/l | 250 mg/l | 14 % | 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 (59 — most recent value per parameter)
Microbiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 KBE/100 ml | 0/100 ml | — | Mean |
| Intestinal enterococci | 0 KBE/100 ml | 0/100 ml | — | Mean |
Chemical parameters (26)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | <0,05 µg/l below limit of quantification | 3 µg/l | < 2 % * | Mean |
| Antimony | <0,001 mg/l below limit of quantification | 5 µg/l | < 20 % * | Mean |
| Arsenic | <0,0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | Mean |
| Benzene | <0,05 µg/l below limit of quantification | 1 µg/l | < 5 % * | Mean |
| Benzo(a)pyrene | <0,0025 µg/l below limit of quantification | 10 ng/l | < 25 % * | Mean |
| Bisphenol A | <0,015 µg/l below limit of quantification | 2.5 µg/l | < 0.6 % * | Mean |
| Boron | <0,05 mg/l below limit of quantification | 1 mg/l | < 5 % * | Mean |
| Bromate | <0,0030 mg/l below limit of quantification | 10 µg/l | < 30 % * | Mean |
| Cadmium | <0,0003 mg/l below limit of quantification | 3 µg/l | < 10 % * | Mean |
| Chlorate | <0,003 mg/l below limit of quantification | 70 µg/l | < 4 % * | Mean |
| Chlorite | <0,010 mg/l below limit of quantification | 0.2 mg/l | < 5 % * | Mean |
| Chromium | <0,0004 mg/l below limit of quantification | 25 µg/l | < 2 % * | Mean |
| Copper | <0,005 mg/l below limit of quantification | 2 mg/l | < 0.3 % * | Mean |
| Cyanide | <0,005 mg/l below limit of quantification | 50 µg/l | < 10 % * | Mean |
| Fluoride | 0,09 mg/l | 1.5 mg/l | 6 % | Mean |
| Lead | <0,0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | Mean |
| Mercury | <0,0001 mg/l below limit of quantification | 1 µg/l | < 10 % * | Mean |
| Nickel | <0,002 mg/l below limit of quantification | 20 µg/l | < 10 % * | Mean |
| Nitrate | 12,1 mg/l | 50 mg/l | 24 % | Mean |
| Nitrite | 0,01 mg/l | 0.5 mg/l | 2 % | Mean |
| Pesticides — Total | <0,025 µg/l below limit of quantification | 0.5 µg/l | < 5 % * | Mean |
| Polycyclic aromatic hydrocarbons | <0,005 µg/l below limit of quantification | 0.1 µg/l | < 5 % * | Mean |
| Selenium | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Mean |
| Tetrachloroethene and Trichloroethene (sum) | <0,05 µg/l below limit of quantification | 10 µg/l | < 0.5 % * | Mean |
| Trihalomethanes — Total | <0,050 µg/l below limit of quantification | 50 µg/l | < 0.1 % * | Mean |
| Uranium | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | 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 (18)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | <0,010 mg/l below limit of quantification | 0.2 mg/l | < 5 % * | Mean |
| Ammonium | <0,05 mg/l below limit of quantification | 0.5 mg/l | < 10 % * | Mean |
| Calcite dissolution capacity | 0 mg/l | 5 mg/l CaCO3 | — | Mean |
| Chloride | 36 mg/l | 250 mg/l | 14 % | Mean |
| Clostridium perfringens (including spores) | 0 KBE/100 ml | 0/100 ml | — | Mean |
| Coliform bacteria | 0 KBE/100 ml | 0/100 ml | — | Mean |
| Colony count 22 °C | 0 KBE/ml | ohne anormale Veränderung | — | Mean |
| Colony count 36 °C | 0 KBE/ml | ohne anormale Veränderung | — | Mean |
| Colour | <0,10 1/m below limit of quantification | 0.5 m⁻¹ | — | Mean |
| Conductivity (25 °C) | 421 µS/cm | 2,790 µS/cm | — | Mean |
| Iron | <0,010 mg/l below limit of quantification | 0.2 mg/l | < 5 % * | Mean |
| Manganese | <0,002 mg/l below limit of quantification | 50 µg/l | < 4 % * | Mean |
| pH | 7,91 | 6,5–9,5 | — | Mean |
| Sodium | 24 mg/l | 200 mg/l | 12 % | Mean |
| Sulphate | 35 mg/l | 250 mg/l | 14 % | Mean |
| Temperature | 13 °C | — | — | Mean |
| Total organic carbon (TOC) | 0,7 mg/l | ohne anormale Veränderung | — | Mean |
| Turbidity | <0,05 FNU 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.
Radiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Indicative dose | <0,1 mSv/a below limit of quantification | 0.1 mSv/a | — | Mean |
| Radon-222 | <10 Bq/l below limit of quantification | 100 Bq/l | — | Mean |
Further parameters (11)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Acid capacity to pH 4.3 | 2,21 mmol/l | — | — | Mean |
| Base capacity to pH 8.2 | 0,05 mmol/l | — | — | Mean |
| Calcium | 49 mg/l | — | — | Mean |
| Carbonate hardness | 6,2 °dH | — | — | Mean |
| Hardness range (WRMG) | weich | — | — | Mean |
| Magnesium | 6,2 mg/l | — | — | Mean |
| Oxygen | 10,8 mg/l | — | — | Mean |
| Phosphate | 0,14 mg/l | — | — | Mean |
| Potassium | 3,2 mg/l | — | — | Mean |
| Silicate / silicic acid | 5,9 mg/l | — | — | Mean |
| Total hardness | 8,2 °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.gelsenwasser.de/fileadmin/twa/downloads/www/trinkwasseranalyse_hengsen.pdf · 2025 · retrieved on 25/07/2026
Postcodes in this zone: 59423 , 59425 , 59427
Wasserwerk Villigst
Wasserwerke Westfalen GmbHAssigned 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
7.7 °dH
Hardness range weich
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 13,3 mg/l | 50 mg/l | 27 % | Mean |
| Lead | <0,0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | Mean |
| Escherichia coli (E. coli) | 0 KBE/100 ml | 0/100 ml | — | Mean |
| Sulphate | 33 mg/l | 250 mg/l | 13 % | Mean |
| Sodium | 29 mg/l | 200 mg/l | 14 % | 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 (55 — most recent value per parameter)
Microbiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 KBE/100 ml | 0/100 ml | — | Mean |
| Intestinal enterococci | 0 KBE/100 ml | 0/100 ml | — | Mean |
Chemical parameters (24)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | <0,05 µg/l below limit of quantification | 3 µg/l | < 2 % * | Mean |
| Antimony | <0,001 mg/l below limit of quantification | 5 µg/l | < 20 % * | Mean |
| Arsenic | <0,0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | Mean |
| Benzene | <0,05 µg/l below limit of quantification | 1 µg/l | < 5 % * | Mean |
| Benzo(a)pyrene | <0,0025 µg/l below limit of quantification | 10 ng/l | < 25 % * | Mean |
| Bisphenol A | <0,005 µg/l below limit of quantification | 2.5 µg/l | < 0.2 % * | Mean |
| Boron | <0,05 mg/l below limit of quantification | 1 mg/l | < 5 % * | Mean |
| Bromate | <0,0030 mg/l below limit of quantification | 10 µg/l | < 30 % * | Mean |
| Cadmium | <0,0003 mg/l below limit of quantification | 3 µg/l | < 10 % * | Mean |
| Chromium | 0,0004 mg/l | 25 µg/l | 2 % | Mean |
| Copper | <0,005 mg/l below limit of quantification | 2 mg/l | < 0.3 % * | Mean |
| Cyanide | <0,005 mg/l below limit of quantification | 50 µg/l | < 10 % * | Mean |
| Fluoride | 0,08 mg/l | 1.5 mg/l | 5 % | Mean |
| Lead | <0,0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | Mean |
| Mercury | <0,0001 mg/l below limit of quantification | 1 µg/l | < 10 % * | Mean |
| Nickel | <0,002 mg/l below limit of quantification | 20 µg/l | < 10 % * | Mean |
| Nitrate | 13,3 mg/l | 50 mg/l | 27 % | Mean |
| Nitrite | <0,01 mg/l below limit of quantification | 0.5 mg/l | < 2 % * | Mean |
| Pesticides — Total | <0,025 µg/l below limit of quantification | 0.5 µg/l | < 5 % * | Mean |
| Polycyclic aromatic hydrocarbons | <0,005 µg/l below limit of quantification | 0.1 µg/l | < 5 % * | Mean |
| Selenium | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Mean |
| Tetrachloroethene and Trichloroethene (sum) | 0,1 µg/l | 10 µg/l | 1 % | Mean |
| Trihalomethanes — Total | <0,050 µg/l below limit of quantification | 50 µg/l | < 0.1 % * | Mean |
| Uranium | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | 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 (18)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | <0,010 mg/l below limit of quantification | 0.2 mg/l | < 5 % * | Mean |
| Ammonium | <0,05 mg/l below limit of quantification | 0.5 mg/l | < 10 % * | Mean |
| Calcite dissolution capacity | 1 mg/l | 5 mg/l CaCO3 | — | Mean |
| Chloride | 25 mg/l | 250 mg/l | 10 % | Mean |
| Clostridium perfringens (including spores) | 0 KBE/100 ml | 0/100 ml | — | Mean |
| Coliform bacteria | 0 KBE/100 ml | 0/100 ml | — | Mean |
| Colony count 22 °C | 0 KBE/ml | ohne anormale Veränderung | — | Mean |
| Colony count 36 °C | 0 KBE/ml | ohne anormale Veränderung | — | Mean |
| Colour | <0,10 1/m below limit of quantification | 0.5 m⁻¹ | — | Mean |
| Conductivity (25 °C) | 411 µS/cm | 2,790 µS/cm | — | Mean |
| Iron | <0,010 mg/l below limit of quantification | 0.2 mg/l | < 5 % * | Mean |
| Manganese | <0,002 mg/l below limit of quantification | 50 µg/l | < 4 % * | Mean |
| pH | 8,03 | 6,5–9,5 | — | Mean |
| Sodium | 29 mg/l | 200 mg/l | 14 % | Mean |
| Sulphate | 33 mg/l | 250 mg/l | 13 % | Mean |
| Temperature | 11,5 °C | — | — | Mean |
| Total organic carbon (TOC) | 0,9 mg/l | ohne anormale Veränderung | — | Mean |
| Turbidity | <0,05 FNU 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 (11)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Acid capacity to pH 4.3 | 2,60 mmol/l | — | — | Mean |
| Base capacity to pH 8.2 | 0,06 mmol/l | — | — | Mean |
| Calcium | 45 mg/l | — | — | Mean |
| Carbonate hardness | 7,3 °dH | — | — | Mean |
| Hardness range (WRMG) | weich | — | — | Mean |
| Magnesium | 6,0 mg/l | — | — | Mean |
| Oxygen | 4,0 mg/l | — | — | Mean |
| Phosphate | 0,21 mg/l | — | — | Mean |
| Potassium | 3,1 mg/l | — | — | Mean |
| Silicate / silicic acid | 7,2 mg/l | — | — | Mean |
| Total hardness | 7,7 °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.gelsenwasser.de/fileadmin/twa/downloads/www/trinkwasseranalyse_villigst.pdf · Jahresmittelwert 2024 · retrieved on 25/07/2026
Postcodes in this zone: 59423 , 59425 , 59427
Wasserwerk Westhofen 1
Wasserwerke Westfalen GmbHAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
Water hardness
8.2 °dH
Hardness range weich
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 13,5 mg/l | 50 mg/l | 27 % | Mean · Wasserwerk Westhofen 1 |
| Lead | < 1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Mean · Wasserwerk Westhofen 1 |
| Escherichia coli (E. coli) | 0 KBE/100 ml | 0/100 ml | — | Mean · Wasserwerk Westhofen 1 |
| Sulphate | 38 mg/l | 250 mg/l | 15 % | Mean · Wasserwerk Westhofen 1 |
| Sodium | 29 mg/l | 200 mg/l | 14 % | Mean · Wasserwerk Westhofen 1 |
* 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 KBE/100 ml | 0/100 ml | — | Mean · Wasserwerk Westhofen 1 |
| Intestinal enterococci | 0 KBE/100 ml | 0/100 ml | — | Mean · Wasserwerk Westhofen 1 |
Chemical parameters (18)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Antimony | < 1,0 µg/l below limit of quantification | 5 µg/l | < 20 % * | Mean · Wasserwerk Westhofen 1 |
| Arsenic | < 0,5 µg/l below limit of quantification | 10 µg/l | < 5 % * | Mean · Wasserwerk Westhofen 1 |
| Boron | < 0,05 mg/l below limit of quantification | 1 mg/l | < 5 % * | Mean · Wasserwerk Westhofen 1 |
| Bromate | < 0,0030 mg/l below limit of quantification | 10 µg/l | < 30 % * | Mean · Wasserwerk Westhofen 1 |
| Cadmium | < 0,3 µg/l below limit of quantification | 3 µg/l | < 10 % * | Mean · Wasserwerk Westhofen 1 |
| Chlorate | < 0,00 mg/l below limit of quantification | 70 µg/l | < 0 % * | Mean · Wasserwerk Westhofen 1 |
| Chlorite | < 0,01 mg/l below limit of quantification | 0.2 mg/l | < 5 % * | Mean · Wasserwerk Westhofen 1 |
| Chromium | < 0,4 µg/l below limit of quantification | 25 µg/l | < 2 % * | Mean · Wasserwerk Westhofen 1 |
| Copper | < 5 µg/l below limit of quantification | 2 mg/l | < 0.3 % * | Mean · Wasserwerk Westhofen 1 |
| Cyanide | < 0,005 mg/l below limit of quantification | 50 µg/l | < 10 % * | Mean · Wasserwerk Westhofen 1 |
| Fluoride | 0,08 mg/l | 1.5 mg/l | 5 % | Mean · Wasserwerk Westhofen 1 |
| Lead | < 1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Mean · Wasserwerk Westhofen 1 |
| Mercury | < 0,10 µg/l below limit of quantification | 1 µg/l | < 10 % * | Mean · Wasserwerk Westhofen 1 |
| Nickel | < 2 µg/l below limit of quantification | 20 µg/l | < 10 % * | Mean · Wasserwerk Westhofen 1 |
| Nitrate | 13,5 mg/l | 50 mg/l | 27 % | Mean · Wasserwerk Westhofen 1 |
| Nitrite | 0,01 mg/l | 0.5 mg/l | 2 % | Mean · Wasserwerk Westhofen 1 |
| Selenium | < 1,0 µg/l below limit of quantification | 10 µg/l | < 10 % * | Mean · Wasserwerk Westhofen 1 |
| Uranium | < 1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Mean · Wasserwerk Westhofen 1 |
* 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 (19)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | < 10 µg/l below limit of quantification | 0.2 mg/l | < 5 % * | Mean · Wasserwerk Westhofen 1 |
| Ammonium | < 0,05 mg/l below limit of quantification | 0.5 mg/l | < 10 % * | Mean · Wasserwerk Westhofen 1 |
| Chloride | 48 mg/l | 250 mg/l | 19 % | Mean · Wasserwerk Westhofen 1 |
| Clostridium perfringens (including spores) | 0 KBE/100 ml | 0/100 ml | — | Mean · Wasserwerk Westhofen 1 |
| Coliform bacteria | 0 KBE/100 ml | 0/100 ml | — | Mean · Wasserwerk Westhofen 1 |
| Colony count 22 °C | 0 KBE/ml | ohne anormale Veränderung | — | Mean · Wasserwerk Westhofen 1 |
| Colony count 36 °C | 0 KBE/ml | ohne anormale Veränderung | — | Mean · Wasserwerk Westhofen 1 |
| Colour | < 0,10 1/m below limit of quantification | 0.5 m⁻¹ | — | Mean · Wasserwerk Westhofen 1 |
| Conductivity (25 °C) | 456 µS/cm | 2,790 µS/cm | — | Mean · Wasserwerk Westhofen 1 |
| Iron | < 0,010 mg/l below limit of quantification | 0.2 mg/l | < 5 % * | Mean · Wasserwerk Westhofen 1 |
| Manganese | < 0,002 mg/l below limit of quantification | 50 µg/l | < 4 % * | Mean · Wasserwerk Westhofen 1 |
| Odour | unauffällig | für den Verbraucher annehmbar | — | Mean · Wasserwerk Westhofen 1 |
| pH | 7,9 | 6,5–9,5 | — | Mean · Wasserwerk Westhofen 1 |
| Sodium | 29 mg/l | 200 mg/l | 14 % | Mean · Wasserwerk Westhofen 1 |
| Sulphate | 38 mg/l | 250 mg/l | 15 % | Mean · Wasserwerk Westhofen 1 |
| Taste | unauffällig | für den Verbraucher annehmbar | — | Mean · Wasserwerk Westhofen 1 |
| Temperature | 5,9 °C | — | — | Mean · Wasserwerk Westhofen 1 |
| Total organic carbon (TOC) | 1 mg/l | ohne anormale Veränderung | — | Mean · Wasserwerk Westhofen 1 |
| Turbidity | < 0,05 FNU below limit of quantification | 1 NTU | — | Mean · Wasserwerk Westhofen 1 |
* 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 (20)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Acid capacity to pH 4.3 | 2,07 mmol/l | — | — | Mean · Wasserwerk Westhofen 1 |
| Barium | 24 µg/l | — | — | Mean · Wasserwerk Westhofen 1 |
| Base capacity to pH 8.2 | 0,04 mmol/l | — | — | Mean · Wasserwerk Westhofen 1 |
| Bromide | < 0,05 mg/l below limit of quantification | — | — | Mean · Wasserwerk Westhofen 1 |
| Calcium | 48 mg/l | — | — | Mean · Wasserwerk Westhofen 1 |
| Carbonate hardness | 5,8 °dH | — | — | Mean · Wasserwerk Westhofen 1 |
| Dissolved organic carbon (DOC) | 1,1 mg/l | — | — | Mean · Wasserwerk Westhofen 1 |
| Gadolinium | < 0,1 µg/l below limit of quantification | — | — | Mean · Wasserwerk Westhofen 1 |
| Hardness range (WRMG) | weich | — | — | Mean · Wasserwerk Westhofen 1 |
| Lanthanum | < 0,1 µg/l below limit of quantification | — | — | Mean · Wasserwerk Westhofen 1 |
| Lithium | 5 µg/l | — | — | Mean · Wasserwerk Westhofen 1 |
| Magnesium | 6,6 mg/l | — | — | Mean · Wasserwerk Westhofen 1 |
| Oxygen | 13,2 mg/l | — | — | Mean · Wasserwerk Westhofen 1 |
| Phosphate | 0,15 mg/l | — | — | Mean · Wasserwerk Westhofen 1 |
| Potassium | 3 mg/l | — | — | Mean · Wasserwerk Westhofen 1 |
| Silicate / silicic acid | 2200 µg/l | — | — | Mean · Wasserwerk Westhofen 1 |
| Strontium | 0,16 mg/l | — | — | Mean · Wasserwerk Westhofen 1 |
| Total hardness | 8,2 °dH | — | — | Mean · Wasserwerk Westhofen 1 |
| Vanadium | < 0,5 µg/l below limit of quantification | — | — | Mean · Wasserwerk Westhofen 1 |
| Zinc | < 5 µg/l below limit of quantification | — | — | Mean · Wasserwerk Westhofen 1 |
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.gelsenwasser.de/twa-gelsenwasser?apikey=edr56zgt54 · Quartals-Mittel 2026/1 · Quartals-Mittel 2026/1 · retrieved on 17/08/2026
Postcodes in this zone: 59423 , 59425 , 59427
Wasserwerk Westhofen 1 / Pumpwerk Westhofen 1 (00-0280)
Wasserwerke Westfalen GmbHAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
Water hardness
8.1 °dH
Hardness range weich
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 11,2 mg/l | 50 mg/l | 22 % | Mean |
| Lead | <0,0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | Mean |
| Escherichia coli (E. coli) | 0 KBE/100 ml | 0/100 ml | — | Mean |
| Sulphate | 36 mg/l | 250 mg/l | 14 % | Mean |
| Sodium | 26 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 (59 — most recent value per parameter)
Microbiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 KBE/100 ml | 0/100 ml | — | Mean |
| Intestinal enterococci | 0 KBE/100 ml | 0/100 ml | — | Mean |
Chemical parameters (26)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | <0,05 µg/l below limit of quantification | 3 µg/l | < 2 % * | Mean |
| Antimony | <0,001 mg/l below limit of quantification | 5 µg/l | < 20 % * | Mean |
| Arsenic | <0,0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | Mean |
| Benzene | <0,05 µg/l below limit of quantification | 1 µg/l | < 5 % * | Mean |
| Benzo(a)pyrene | <0,0025 µg/l below limit of quantification | 10 ng/l | < 25 % * | Mean |
| Bisphenol A | <0,015 µg/l below limit of quantification | 2.5 µg/l | < 0.6 % * | Mean |
| Boron | 0,05 mg/l | 1 mg/l | 5 % | Mean |
| Bromate | <0,0030 mg/l below limit of quantification | 10 µg/l | < 30 % * | Mean |
| Cadmium | <0,0003 mg/l below limit of quantification | 3 µg/l | < 10 % * | Mean |
| Chlorate | <0,003 mg/l below limit of quantification | 70 µg/l | < 4 % * | Mean |
| Chlorite | <0,010 mg/l below limit of quantification | 0.2 mg/l | < 5 % * | Mean |
| Chromium | 0,0004 mg/l | 25 µg/l | 2 % | Mean |
| Copper | <0,005 mg/l below limit of quantification | 2 mg/l | < 0.3 % * | Mean |
| Cyanide | <0,005 mg/l below limit of quantification | 50 µg/l | < 10 % * | Mean |
| Fluoride | 0,09 mg/l | 1.5 mg/l | 6 % | Mean |
| Lead | <0,0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | Mean |
| Mercury | <0,0001 mg/l below limit of quantification | 1 µg/l | < 10 % * | Mean |
| Nickel | <0,002 mg/l below limit of quantification | 20 µg/l | < 10 % * | Mean |
| Nitrate | 11,2 mg/l | 50 mg/l | 22 % | Mean |
| Nitrite | 0,01 mg/l | 0.5 mg/l | 2 % | Mean |
| Pesticides — Total | <0,025 µg/l below limit of quantification | 0.5 µg/l | < 5 % * | Mean |
| Polycyclic aromatic hydrocarbons | <0,005 µg/l below limit of quantification | 0.1 µg/l | < 5 % * | Mean |
| Selenium | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Mean |
| Tetrachloroethene and Trichloroethene (sum) | <0,05 µg/l below limit of quantification | 10 µg/l | < 0.5 % * | Mean |
| Trihalomethanes — Total | <0,050 µg/l below limit of quantification | 50 µg/l | < 0.1 % * | Mean |
| Uranium | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | 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 (18)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | <0,010 mg/l below limit of quantification | 0.2 mg/l | < 5 % * | Mean |
| Ammonium | <0,05 mg/l below limit of quantification | 0.5 mg/l | < 10 % * | Mean |
| Calcite dissolution capacity | 0 mg/l | 5 mg/l CaCO3 | — | Mean |
| Chloride | 39 mg/l | 250 mg/l | 16 % | Mean |
| Clostridium perfringens (including spores) | 0 KBE/100 ml | 0/100 ml | — | Mean |
| Coliform bacteria | 0 KBE/100 ml | 0/100 ml | — | Mean |
| Colony count 22 °C | 0 KBE/ml | ohne anormale Veränderung | — | Mean |
| Colony count 36 °C | 0 KBE/ml | ohne anormale Veränderung | — | Mean |
| Colour | <0,10 1/m below limit of quantification | 0.5 m⁻¹ | — | Mean |
| Conductivity (25 °C) | 429 µS/cm | 2,790 µS/cm | — | Mean |
| Iron | <0,010 mg/l below limit of quantification | 0.2 mg/l | < 5 % * | Mean |
| Manganese | <0,002 mg/l below limit of quantification | 50 µg/l | < 4 % * | Mean |
| pH | 7,88 | 6,5–9,5 | — | Mean |
| Sodium | 26 mg/l | 200 mg/l | 13 % | Mean |
| Sulphate | 36 mg/l | 250 mg/l | 14 % | Mean |
| Temperature | 13,3 °C | — | — | Mean |
| Total organic carbon (TOC) | 0,8 mg/l | ohne anormale Veränderung | — | Mean |
| Turbidity | <0,05 FNU 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.
Radiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Indicative dose | <0,1 mSv/a below limit of quantification | 0.1 mSv/a | — | Mean |
| Radon-222 | <10 Bq/l below limit of quantification | 100 Bq/l | — | Mean |
Further parameters (11)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Acid capacity to pH 4.3 | 2,2 mmol/l | — | — | Mean |
| Base capacity to pH 8.2 | 0,06 mmol/l | — | — | Mean |
| Calcium | 47 mg/l | — | — | Mean |
| Carbonate hardness | 6,2 °dH | — | — | Mean |
| Hardness range (WRMG) | weich | — | — | Mean |
| Magnesium | 6,4 mg/l | — | — | Mean |
| Oxygen | 11,1 mg/l | — | — | Mean |
| Phosphate | 0,17 mg/l | — | — | Mean |
| Potassium | 3,3 mg/l | — | — | Mean |
| Silicate / silicic acid | 5,4 mg/l | — | — | Mean |
| Total hardness | 8,1 °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.gelsenwasser.de/fileadmin/twa/downloads/www/trinkwasseranalyse_westhoven.pdf · 2025 · retrieved on 25/07/2026
Frequently asked questions about drinking water in Unna
- How hard is the water in Unna?
- Gelsenwasser publishes a total hardness of 7.7 °dH for the supply zone Verbundwasserwerk Essen; Entnahmestelle: Trinkwasser Essen nach UV Ltg. Überruhr, WAA 2 (00-0350) (hardness range weich). 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: Publication by the water supplier, retrieved on 11/07/2026.
- How much nitrate is in the drinking water in Unna?
- Gelsenwasser publishes a nitrate value of 9,2 mg/l for the supply zone Verbundwasserwerk Essen; Entnahmestelle: Trinkwasser Essen nach UV Ltg. Überruhr, WAA 2 (00-0350). The statutory parametric value is 50 mg/l; the measured value represents 18 % of the parametric value. Basis: Publication by the water supplier, retrieved on 11/07/2026.
- Who supplies the drinking water in Unna?
- Gelsenwasser. The values shown here come from the supply zone Verbundwasserwerk Essen; Entnahmestelle: Trinkwasser Essen nach UV Ltg. Überruhr, WAA 2 (00-0350) 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.