Drinking water in Wilster
2 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
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.
stadtwerke-wilster gesamt
Stadtwerke WilsterAssigned 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.
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 1,2 mg/l | 50 mg/l | 2 % | Mean · Source [1] |
| Lead | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Mean · Source [1] |
| Escherichia coli (E. coli) | 0 /100 ml | 0/100 ml | — | Maximum · Median 0 · Source [1] |
| Sulphate | 41 mg/l | 250 mg/l | 16 % | Mean · Source [1] |
| Sodium | 14,3 mg/l | 200 mg/l | 7 % | Mean · 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 (53 — 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 · Source [1] |
| Intestinal enterococci | 0 /100 ml | 0/100 ml | — | Maximum · Median 0 · Source [1] |
Chemical parameters (25)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | <0,0005 mg/l below limit of quantification | 3 µg/l | < 17 % * | Mean · Source [1] |
| Antimony | <0,0001 mg/l below limit of quantification | 5 µg/l | < 2 % * | Mean · Source [1] |
| Arsenic | <0,0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | Mean · Source [1] |
| Benzene | <0,0003 mg/l below limit of quantification | 1 µg/l | < 30 % * | Mean · Source [1] |
| Benzo(a)pyrene | <0,000003 mg/l below limit of quantification | 10 ng/l | < 30 % * | Mean · Source [1] |
| Bisphenol A | <0,00005 mg/l below limit of quantification | 2.5 µg/l | < 2 % * | Mean · Source [2] |
| Boron | <0,05 mg/l below limit of quantification | 1 mg/l | < 5 % * | Mean · Source [1] |
| Bromate | <0,003 mg/l below limit of quantification | 10 µg/l | < 30 % * | Mean · Source [1] |
| Cadmium | <0,0001 mg/l below limit of quantification | 3 µg/l | < 3 % * | Mean · Source [1] |
| Chromium | <0,0005 mg/l below limit of quantification | 25 µg/l | < 2 % * | Mean · Source [1] |
| Copper | 0,022 mg/l | 2 mg/l | 1 % | Mean · Source [1] |
| Cyanide | <0,004 mg/l below limit of quantification | 50 µg/l | < 8 % * | Mean · Source [1] |
| Fluoride | 0,09 mg/l | 1.5 mg/l | 6 % | Mean · Source [1] |
| Haloacetic acids (HAA) | 0 mg/l | — | — | Mean · Source [2] |
| Lead | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Mean · Source [1] |
| Mercury | <0,0001 mg/l below limit of quantification | 1 µg/l | < 10 % * | Mean · Source [1] |
| Nickel | <0,001 mg/l below limit of quantification | 20 µg/l | < 5 % * | Mean · Source [1] |
| Nitrate | 1,2 mg/l | 50 mg/l | 2 % | Mean · Source [1] |
| Nitrite | <0,01 mg/l below limit of quantification | 0.5 mg/l | < 2 % * | Mean · Source [1] |
| Pesticides — Total | 0 mg/l | 0.5 µg/l | 0 % | Mean · Source [1] |
| Polycyclic aromatic hydrocarbons | 0 mg/l | 0.1 µg/l | 0 % | Mean · Source [1] |
| Selenium | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Mean · Source [1] |
| Tetrachloroethene and Trichloroethene (sum) | 0 mg/l | 10 µg/l | 0 % | Mean · Source [1] |
| Trihalomethanes — Total | 0 mg/l | 50 µg/l | 0 % | Mean · Source [1] |
| Uranium | 0,0002 mg/l | 10 µg/l | 2 % | Mean · 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 (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 % * | Mean · Source [1] |
| Ammonium | <0,05 mg/l below limit of quantification | 0.5 mg/l | < 10 % * | Mean · Source [1] |
| Calcite dissolution capacity | 6,0 mg/l | 5 mg/l CaCO3 | — | Mean · Source [2] |
| Chloride | 30 mg/l | 250 mg/l | 12 % | Mean · Source [1] |
| Coliform bacteria | 0 /100 ml | 0/100 ml | — | Maximum · Median 0 · Source [1] |
| Colony count 22 °C | 0 /ml | ohne anormale Veränderung | — | Mean · Source [1] |
| Colony count 36 °C | 0 /ml | ohne anormale Veränderung | — | Mean · Source [1] |
| Colour | <0,1 1/m below limit of quantification | 0.5 m⁻¹ | — | Mean · Source [1] |
| Conductivity (25 °C) | 390 µS/cm | 2,790 µS/cm | — | Mean · Source [1] |
| Iron | <0,01 mg/l below limit of quantification | 0.2 mg/l | < 5 % * | Mean · Source [1] |
| Manganese | <0,005 mg/l below limit of quantification | 50 µg/l | < 10 % * | Mean · Source [1] |
| pH | 7,48 - | 6,5–9,5 | — | Mean · Source [1] |
| Sodium | 14,3 mg/l | 200 mg/l | 7 % | Mean · Source [1] |
| Sulphate | 41 mg/l | 250 mg/l | 16 % | Mean · Source [1] |
| Temperature | 12 °C | — | — | Mean · Source [1] |
| Total organic carbon (TOC) | 0,65 mg/l | ohne anormale Veränderung | — | Mean · Source [1] |
| Turbidity | 0,11 NTU | 1 NTU | — | Mean · 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.
Further parameters (9)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Acid capacity to pH 4.3 | 2,18 mmol/l | — | — | Mean · Source [1] |
| Base capacity to pH 8.2 | 0,15 mmol/l | — | — | Mean · Source [1] |
| Calcium | 58 mg/l | — | — | Mean · Source [1] |
| Carbonate hardness | 6,1 °dH | — | — | Mean · Source [1] |
| Magnesium | 4 mg/l | — | — | Mean · Source [1] |
| Oxygen | 9,3 mg/l | — | — | Mean · Source [1] |
| Potassium | 1,5 mg/l | — | — | Mean · Source [1] |
| Total hardness | 9,15 °dH | — | — | Mean · Source [1] |
| Zinc | <0,01 mg/l below limit of quantification | — | — | Mean · 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.
Postcodes in this zone: 25554
Show 1 more supply zone
WW Kleve, Achtern Barg, 25554 Kleve / Pumpenkeller, Spülbecken, Wasserwerksausgang
Stadtwerke WilsterAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 1,72 mg/l | 50 mg/l | 3 % | Single value |
| Lead | < 0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value |
| Escherichia coli (E. coli) | 0 KBE/100 ml | 0/100 ml | — | Single value |
| Sulphate | 43,2 mg/l | 250 mg/l | 17 % | Single value |
| Sodium | 14,7 mg/l | 200 mg/l | 7 % | 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 (52 — most recent value per parameter)
Microbiology (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 KBE/100 ml | 0/100 ml | — | Single value |
Chemical parameters (20)
| 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 |
| 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 |
| Benzene | < 0,5 µg/l below limit of quantification | 1 µg/l | < 50 % * | Single value |
| Benzo(a)pyrene | < 0,01 µg/l below limit of quantification | 10 ng/l | < 100 % * | Single value |
| Bisphenol A | < 0,05 µg/l below limit of quantification | 2.5 µg/l | < 2 % * | Single value |
| Boron | 0,03 mg/l | 1 mg/l | 3 % | Single value |
| Bromate | < 0,003 mg/l below limit of quantification | 10 µg/l | < 30 % * | Single value |
| Cadmium | < 0,0002 mg/l below limit of quantification | 3 µg/l | < 7 % * | Single value |
| Copper | < 0,001 mg/l below limit of quantification | 2 mg/l | < < 0.1 % * | Single value |
| Cyanide | < 0,01 mg/l below limit of quantification | 50 µg/l | < 20 % * | Single value |
| Fluoride | 0,05 mg/l | 1.5 mg/l | 3 % | Single value |
| Lead | < 0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value |
| Mercury | < 0,0001 mg/l below limit of quantification | 1 µg/l | < 10 % * | Single value |
| Nickel | < 0,001 mg/l below limit of quantification | 20 µg/l | < 5 % * | Single value |
| Nitrate | 1,72 mg/l | 50 mg/l | 3 % | Single value |
| Nitrite | < 0,01 mg/l below limit of quantification | 0.5 mg/l | < 2 % * | Single value |
| Selenium | < 0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value |
| Trihalomethanes — Total | < 0,01 mg/l below limit of quantification | 50 µg/l | < 20 % * | Single value |
| Uranium | < 0,0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | 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.
Metabolites (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Dimethylsulfamide (DMS) | < 0,10 µg/l below limit of quantification | — | — | Single value |
Indicator parameters (18)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Ammonium | < 0,01 mg/l below limit of quantification | 0.5 mg/l | < 2 % * | Single value |
| Calcite dissolution capacity | 0,1 mg/l | 5 mg/l CaCO3 | — | Single value |
| Chloride | 29,5 mg/l | 250 mg/l | 12 % | Single value |
| Coliform bacteria | 0 KBE/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 | farblos Unit not stated in the document | 0.5 m⁻¹ | — | Single value |
| Conductivity (25 °C) | 406 µS/cm | 2,790 µS/cm | — | Single value |
| Iron | < 0,01 mg/l below limit of quantification | 0.2 mg/l | < 5 % * | Single value |
| Odour | o. B. | für den Verbraucher annehmbar | — | Single value |
| Oxidisability | 0,70 mg/l | 5 mg/l O2 | — | Single value |
| pH | 19,1 °C | 6,5–9,5 | — | Single value |
| Sodium | 14,7 mg/l | 200 mg/l | 7 % | Single value |
| Sulphate | 43,2 mg/l | 250 mg/l | 17 % | Single value |
| Taste | o. B. | für den Verbraucher annehmbar | — | Single value |
| Temperature | 10,3 °C | — | — | Single value |
| Total organic carbon (TOC) | 0,8 mg/l | ohne anormale Veränderung | — | Single value |
| Turbidity | 0,11 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 (12)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Acid capacity to pH 4.3 | 2,21 mmol/l | — | — | Single value |
| Base capacity to pH 8.2 | 0,05 mmol/l | — | — | Single value |
| Calcium | 58,0 mg/l | — | — | Single value |
| Carbonate hardness | 6,20 °dH | — | — | Single value |
| Hydrogen carbonate | 135 mg/l | — | — | Single value |
| Magnesium | 4,7 mg/l | — | — | Single value |
| Oxygen | 10,4 mg/l | — | — | Single value |
| Phosphate | < 0,1 mg/l below limit of quantification | — | — | Single value |
| Potassium | 1,7 mg/l | — | — | Single value |
| Saturation index | -0,01 | — | — | Single value |
| Total hardness | 9,20 °dH | — | — | Single value |
| Zinc | 0,003 mg/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.
Postcodes in this zone: 25554
Frequently asked questions about drinking water in Wilster
- How hard is the water in Wilster?
- Stadtwerke Wilster publishes a total hardness of 9.2 °dH for the supply zone stadtwerke-wilster gesamt (hardness range medium). 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 08/07/2026.
- How much nitrate is in the drinking water in Wilster?
- Stadtwerke Wilster publishes a nitrate value of 1,2 mg/l for the supply zone stadtwerke-wilster gesamt. The statutory parametric value is 50 mg/l; the measured value represents 2 % of the parametric value. Basis: Publication by the water supplier, retrieved on 08/07/2026.
- Who supplies the drinking water in Wilster?
- Stadtwerke Wilster. The values shown here come from the supply zone stadtwerke-wilster 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.