Drinking water in Hameln
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
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.
Trinkwasser - Netzprobe Halvestorf (Entnahmestelle: Feuerwehr Halvestorf/Hope, Hoper Straße 42)
Stadtwerke Hameln Weserbergland GmbHAssigned 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 | 14,0 mg/l | 50 mg/l | 28 % | Single value |
| Lead | < unter 0,0015 mg/l below limit of quantification | 10 µg/l | — | Single value |
| Sulphate | 210,0 mg/l | 250 mg/l | 84 % | Single value |
| Sodium | 29,6 mg/l | 200 mg/l | 15 % | Single value |
Show all recorded parameters (31 — most recent value per parameter)
Chemical parameters (19)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | < unter 0,0009 mg/l below limit of quantification | 3 µg/l | — | Single value |
| Antimony | < unter 0,00150 mg/l below limit of quantification | 5 µg/l | — | Single value |
| Boron | 0,11 mg/l | 1 mg/l | 11 % | Single value |
| Bromodichloromethane | < unter 0,0005 mg/l below limit of quantification | — | — | Single value |
| Cadmium | < unter 0,001 mg/l below limit of quantification | 3 µg/l | — | Single value |
| Chromium | < unter 0,0005 mg/l below limit of quantification | 25 µg/l | — | Single value |
| Copper | 0,055 mg/l | 2 mg/l | 3 % | Single value |
| Dibromochloromethane | < unter 0,0005 mg/l below limit of quantification | — | — | Single value |
| Fluoride | < unter 0,45 mg/l below limit of quantification | 1.5 mg/l | — | Single value |
| Lead | < unter 0,0015 mg/l below limit of quantification | 10 µg/l | — | Single value |
| Mercury | < unter 0,0003 mg/l below limit of quantification | 1 µg/l | — | Single value |
| Nickel | 0,006 mg/l | 20 µg/l | 30 % | Single value |
| Nitrate | 14,0 mg/l | 50 mg/l | 28 % | Single value |
| Nitrite | < unter 0,01 mg/l below limit of quantification | 0.5 mg/l | — | Single value |
| Selenium | < unter 0,003 mg/l below limit of quantification | 10 µg/l | — | Single value |
| Tetrachloroethene | < unter 0,0005 mg/l below limit of quantification | — | — | Single value |
| Tribromomethane (bromoform) | < unter 0,0005 mg/l below limit of quantification | — | — | Single value |
| Trichloroethene | < unter 0,0005 mg/l below limit of quantification | — | — | Single value |
| Trichloromethane (chloroform) | < unter 0,0005 mg/l below limit of quantification | — | — | Single value |
Indicator parameters (9)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | < unter 0,01 mg/l below limit of quantification | 0.2 mg/l | — | Single value |
| Ammonium | < unter 0,04 mg/l below limit of quantification | 0.5 mg/l | — | Single value |
| Chloride | 56,0 mg/l | 250 mg/l | 22 % | Single value |
| Colour | < unter 0,1 1/m below limit of quantification | 0.5 m⁻¹ | — | Single value |
| Conductivity (25 °C) | 982 µS/cm | 2,790 µS/cm | — | Single value |
| Manganese | < unter 0,015 mg/l below limit of quantification | 50 µg/l | — | Single value |
| Sodium | 29,6 mg/l | 200 mg/l | 15 % | Single value |
| Sulphate | 210,0 mg/l | 250 mg/l | 84 % | Single value |
| Turbidity | 0,13 FNU | 1 NTU | — | Single value |
Further parameters (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Acid capacity to pH 4.3 | 5,20 mmol/l | — | — | Single value |
| Calcium | 118,0 mg/l | — | — | Single value |
| Magnesium | 43,9 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.
Source: https://www.stwhw.de/fileadmin/user_upload/Kundeninfo_Wasseruntersuchungen_ehem._WBV_HHH_gem._TrinkwV__10.2025_.pdf · 30.10.2025, 08:25 Uhr (Entnahmedatum) · retrieved on 11/07/2026
Postcodes in this zone: 31785 , 31787 , 31789
Show 1 more supply zone
Trinkwasser - Netzprobe Hameln (Hafenstraße 14)
Stadtwerke Hameln Weserbergland 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 19/06/2025. We have no newer values — which is why we show the latest available ones rather than none at all. They say nothing about how the water has changed since then.
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 22,0 mg/l | 50 mg/l | 44 % | Single value |
| Lead | < unter 0,0015 mg/l below limit of quantification | 10 µg/l | — | Single value |
| Sulphate | 133,0 mg/l | 250 mg/l | 53 % | Single value |
| Sodium | 27,8 mg/l | 200 mg/l | 14 % | Single value |
Show all recorded parameters (31 — most recent value per parameter)
Chemical parameters (19)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | < unter 0,0009 mg/l below limit of quantification | 3 µg/l | — | Single value |
| Antimony | < unter 0,0015 mg/l below limit of quantification | 5 µg/l | — | Single value |
| Boron | < unter 0,1 mg/l below limit of quantification | 1 mg/l | — | Single value |
| Bromodichloromethane | < unter 0,0005 mg/l below limit of quantification | — | — | Single value |
| Cadmium | < unter 0,001 mg/l below limit of quantification | 3 µg/l | — | Single value |
| Chromium | < unter 0,0005 mg/l below limit of quantification | 25 µg/l | — | Single value |
| Copper | 0,055 mg/l | 2 mg/l | 3 % | Single value |
| Dibromochloromethane | < unter 0,0005 mg/l below limit of quantification | — | — | Single value |
| Fluoride | < unter 0,45 mg/l below limit of quantification | 1.5 mg/l | — | Single value |
| Lead | < unter 0,0015 mg/l below limit of quantification | 10 µg/l | — | Single value |
| Mercury | < unter 0,0003 mg/l below limit of quantification | 1 µg/l | — | Single value |
| Nickel | 0,00900 mg/l | 20 µg/l | 45 % | Single value |
| Nitrate | 22,0 mg/l | 50 mg/l | 44 % | Single value |
| Nitrite | < unter 0,01 mg/l below limit of quantification | 0.5 mg/l | — | Single value |
| Selenium | < unter 0,003 mg/l below limit of quantification | 10 µg/l | — | Single value |
| Tribromomethane (bromoform) | < unter 0,0005 mg/l below limit of quantification | — | — | Single value |
| Trichloroethene | < unter 0,0005 mg/l below limit of quantification | — | — | Single value |
| Trichloromethane (chloroform) | < unter 0,0005 mg/l below limit of quantification | — | — | Single value |
| Uranium | < unter 0,00300 mg/l below limit of quantification | 10 µg/l | — | Single value |
Indicator parameters (9)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | < unter 0,01 mg/l below limit of quantification | 0.2 mg/l | — | Single value |
| Ammonium | < unter 0,04 mg/l below limit of quantification | 0.5 mg/l | — | Single value |
| Chloride | 57,0 mg/l | 250 mg/l | 23 % | Single value |
| Colour | < unter 0,1 1/m below limit of quantification | 0.5 m⁻¹ | — | Single value |
| Conductivity (25 °C) | 885 µS/cm | 2,790 µS/cm | — | Single value |
| Manganese | < unter 0,015 mg/l below limit of quantification | 50 µg/l | — | Single value |
| Sodium | 27,8 mg/l | 200 mg/l | 14 % | Single value |
| Sulphate | 133,0 mg/l | 250 mg/l | 53 % | Single value |
| Turbidity | 0,09 FNU | 1 NTU | — | Single value |
Further parameters (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Acid capacity to pH 4.3 | 5,20 mmol/l | — | — | Single value |
| Calcium | 140,0 mg/l | — | — | Single value |
| Magnesium | 26,5 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.
Source: https://www.stwhw.de/fileadmin/Kundeninfo_Wasseruntersuchungen_gem._TrinkwV__06.2025_Hameln_.pdf · Einzelprobe, Entnahmedatum 19.06.2025, 08:25 Uhr · retrieved on 11/07/2026
Frequently asked questions about drinking water in Hameln
- How much nitrate is in the drinking water in Hameln?
- Stadtwerke Hameln Weserbergland GmbH publishes a nitrate value of 14,0 mg/l for the supply zone Trinkwasser - Netzprobe Halvestorf (Entnahmestelle: Feuerwehr Halvestorf/Hope, Hoper Straße 42). The statutory parametric value is 50 mg/l; the measured value represents 28 % of the parametric value. Basis: Publication by the water supplier, retrieved on 11/07/2026.
- Who supplies the drinking water in Hameln?
- Stadtwerke Hameln Weserbergland GmbH. The values shown here come from the supply zone Trinkwasser - Netzprobe Halvestorf (Entnahmestelle: Feuerwehr Halvestorf/Hope, Hoper Straße 42) 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.