Drinking water in 31787
For this postcode Stadtwerke Hameln Weserbergland GmbH publishes several supply zones. Which of them serves an individual address is not published — below are the values of the zone with the most documented parameters, the remaining 1 underneath.
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
Show 1 more supply zone in this postcode
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
Frequent questions about postcode 31787
- How much nitrate is in the drinking water in Postcode 31787?
- 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 Postcode 31787?
- 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.