Drinking water in 37170
One supply zone, water supplier: Stadtwerke Uslar.
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.
uslar gesamt
Stadtwerke UslarAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
No date is given for these values. The water supplier publishes the analysis without a sampling date and without a report date. When the water was examined is not apparent from the source — we do not add a date and we do not estimate one. What is stated is therefore only when we retrieved the document.
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 4,3 mg NO3/L | 50 mg/l | — | Single value |
| Sulphate | 11,1 mg/L | 250 mg/l | 4 % | Single value |
| Sodium | 4,7 mg/L | 200 mg/l | 2 % | Single value |
Show all recorded parameters (19 — most recent value per parameter)
Chemical parameters (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 4,3 mg NO3/L | 50 mg/l | — | Single value |
Indicator parameters (9)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | <0,01 mg/L below limit of quantification | 0.2 mg/l | < 5 % * | Single value |
| Calcite dissolution capacity | -1,0 mgCaCO3/L | 5 mg/l CaCO3 | — | Single value |
| Chloride | 5,1 mg/L | 250 mg/l | 2 % | Single value |
| Conductivity (25 °C) | 170 Unit not stated in the document | 2,790 µS/cm | — | Single value |
| pH | 8,52 µS/cm | 6,5–9,5 | — | Single value |
| Sodium | 4,7 mg/L | 200 mg/l | 2 % | Single value |
| Sulphate | 11,1 mg/L | 250 mg/l | 4 % | Single value |
| Temperature | 8,1 °C | — | — | Single value |
| Total organic carbon (TOC) | <0,33 mg/L below limit of quantification | ohne anormale Veränderung | — | 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 |
|---|---|---|---|---|
| Calcium | 24,9 mg/L | — | — | Single value |
| Carbonate hardness | 3,7 °dH | — | — | Single value |
| Hardness range (WRMG) | weich | — | — | Single value |
| Magnesium | 3,5 mg/L | — | — | Single value |
| Oxygen | 10,9 mg/L | — | — | Single value |
| Phosphate | 0,27 mg PO4/L | — | — | Single value |
| Potassium | 1,0 mg/L | — | — | Single value |
| Silicate / silicic acid | 14,6 mg SiO2/L | — | — | Single value |
| Total hardness | 4,3 °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.
Frequent questions about postcode 37170
- How hard is the water in Postcode 37170?
- Stadtwerke Uslar publishes a total hardness of 4.3 °dH for the supply zone uslar gesamt (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.
- Who supplies the drinking water in Postcode 37170?
- Stadtwerke Uslar. The values shown here come from the supply zone uslar 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.