Drinking water in Greven
One supply zone, water supplier: Stadtwerke Greven GmbH.
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.
Wasserwerk Greven
Stadtwerke Greven 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 31/12/2022. 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 | 6,37 mg/l | 50 mg/l | 13 % | Single value |
| Lead | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value |
| Sulphate | 87,2 mg/l | 250 mg/l | 35 % | Single value |
| Sodium | 40,0 mg/l | 200 mg/l | 20 % | 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 (54 — most recent value per parameter)
Microbiology (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Intestinal enterococci | 0 KBE/100ml | 0/100 ml | — | Single value |
Chemical parameters (29)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | <0,00125 mg/l below limit of quantification | 3 µg/l | < 42 % * | 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 | <0,0003 mg/l below limit of quantification | 1 µg/l | < 30 % * | Single value |
| Benzo(a)pyrene | <0,000003 mg/l below limit of quantification | 10 ng/l | < 30 % * | Single value |
| Benzo(b)fluoranthene | <0,000007 mg/l below limit of quantification | — | — | Single value |
| Benzo(ghi)perylene | <0,000007 mg/l below limit of quantification | — | — | Single value |
| Benzo(k)fluoranthene | <0,000007 mg/l below limit of quantification | — | — | Single value |
| Boron | <0,1 mg/l below limit of quantification | 1 mg/l | < 10 % * | Single value |
| Bromodichloromethane | 0 mg/l | — | — | Single value |
| Cadmium | <0,0003 mg/l below limit of quantification | 3 µg/l | < 10 % * | Single value |
| Chromium | 0 mg/l | 25 µg/l | 0 % | Single value |
| Copper | <0,2 mg/l below limit of quantification | 2 mg/l | < 10 % * | Single value |
| Cyanide | <0,005 mg/l below limit of quantification | 50 µg/l | < 10 % * | Single value |
| Dibromochloromethane | 0 mg/l | — | — | Single value |
| Fluoride | 0,092 mg/l | 1.5 mg/l | 6 % | Single value |
| Indeno(1,2,3-cd)pyrene | <0,000007 mg/l below limit of quantification | — | — | Single value |
| Lead | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value |
| Nickel | <0,002 mg/l below limit of quantification | 20 µg/l | < 10 % * | Single value |
| Nitrate | 6,37 mg/l | 50 mg/l | 13 % | Single value |
| Nitrite | <0,05 mg/l below limit of quantification | 0.5 mg/l | < 10 % * | Single value |
| Pesticides — Total | 0,00003 mg/l | 0.5 µg/l | 6 % | Single value |
| Selenium | <0,002 mg/l below limit of quantification | 10 µg/l | < 20 % * | Single value |
| Tetrachloroethene | <0,0005 mg/l below limit of quantification | — | — | Single value |
| Tetrachloroethene and Trichloroethene (sum) | <0,0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | Single value |
| Tribromomethane (bromoform) | 0 mg/l | — | — | Single value |
| Trichloroethene | <0,0005 mg/l below limit of quantification | — | — | Single value |
| Trichloromethane (chloroform) | 0 mg/l | — | — | Single value |
| Uranium | 0,0008 mg/l | 10 µg/l | 8 % | Single value |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Indicator parameters (15)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | <0,02 mg/l below limit of quantification | 0.2 mg/l | < 10 % * | Single value |
| Ammonium | <0,075 mg/l below limit of quantification | 0.5 mg/l | < 15 % * | Single value |
| Calcite dissolution capacity | 0 mg/l | 5 mg/l CaCO3 | — | Single value |
| Chloride | 45,7 mg/l | 250 mg/l | 18 % | Single value |
| Clostridium perfringens (including spores) | 0 KBE/100ml | 0/100 ml | — | Single value |
| Coliform bacteria | 0 KBE/100ml | 0/100 ml | — | Single value |
| Conductivity (25 °C) | 806,0 μS/cm | 2,790 µS/cm | — | Single value |
| Odour | ohne | für den Verbraucher annehmbar | — | Single value |
| Oxidisability | 1,71 mg/l O2 | 5 mg/l O2 | — | Single value |
| pH | 7,50 | 6,5–9,5 | — | Single value |
| Sodium | 40,0 mg/l | 200 mg/l | 20 % | Single value |
| Sulphate | 87,2 mg/l | 250 mg/l | 35 % | Single value |
| Taste | ohne | für den Verbraucher annehmbar | — | Single value |
| Total organic carbon (TOC) | 2,96 mg/l | ohne anormale Veränderung | — | Single value |
| Turbidity | 0,15 FTU | 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 (9)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| AOX (adsorbable organically bound halogens) | 0,010 mg/l | — | — | Single value |
| Calcite precipitation capacity | 29,9 mg/l | — | — | Single value |
| Calcium | 110 mg/l | — | — | Single value |
| Carbonate hardness | 15,1 °dH | — | — | Single value |
| Dissolved organic carbon (DOC) | 2,93 mg/l | — | — | Single value |
| Hydrogen carbonate | 330 mg/l | — | — | Single value |
| Magnesium | 6,70 mg/l | — | — | Single value |
| Potassium | 3,6 mg/l | — | — | Single value |
| Total hardness | 17,4 °dH | — | — | Single value |
Values taken unchanged from the publications linked below — for each parameter the most recent recorded value. „—" in the parametric value column: no currently valid legal parametric value is stored in our database for this parameter; the parameter register with all parametric values is being expanded continuously.
Postcodes in this zone: 48268
Frequently asked questions about drinking water in Greven
- How hard is the water in Greven?
- Stadtwerke Greven GmbH publishes a total hardness of 17.4 °dH for the supply zone Wasserwerk Greven (hardness range hard). 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: 04. Juli 2022, retrieved on 11/07/2026.
- How much nitrate is in the drinking water in Greven?
- Stadtwerke Greven GmbH publishes a nitrate value of 6,37 mg/l for the supply zone Wasserwerk Greven. The statutory parametric value is 50 mg/l; the measured value represents 13 % of the parametric value. Basis: 04. Juli 2022, retrieved on 11/07/2026.
- Who supplies the drinking water in Greven?
- Stadtwerke Greven GmbH. The values shown here come from the supply zone Wasserwerk Greven 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.