Drinking water in Herzogenbuchsee
One supply zone, water supplier: EWK Herzogenbuchsee.
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.
Wasserversorgung Herzogenbuchsee
EWK HerzogenbuchseeAssigned 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 | 17.57 mg/l | 40 mg/l | 44 % | Mean · Wasserversorgung Herzogenbuchsee |
| Escherichia coli (E. coli) | 1 KBE/100ml | 0/100 ml | above the parametric value — this parameter must not be detectable | Maximum · Median 0 · Wasserversorgung Herzogenbuchsee |
| Sulphate | 13.8 mg/l | — | — | Mean · Wasserversorgung Herzogenbuchsee |
| Sodium | 7.14 mg/l | 200 mg/l | 4 % | Mean · Wasserversorgung Herzogenbuchsee |
An exceedance of a parametric value does not automatically mean a health risk; the statutory parametric values include safety margins. Assessment and any measures are the responsibility of the competent health authority of the respective country.
Show all recorded parameters (16 — most recent value per parameter)
Microbiology (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aerobic mesophilic bacteria | 2.78 KBE/ml | 300 1/ml | — | Mean · Wasserversorgung Herzogenbuchsee |
| Escherichia coli (E. coli) | 1 KBE/100ml | 0/100 ml | above the parametric value — this parameter must not be detectable | Maximum · Median 0 · Wasserversorgung Herzogenbuchsee |
| Intestinal enterococci | 0 KBE/100ml | 0/100 ml | — | Maximum · Median 0 · Wasserversorgung Herzogenbuchsee |
An exceedance of a parametric value does not automatically mean a health risk; the statutory parametric values include safety margins. Assessment and any measures are the responsibility of the competent health authority of the respective country.
Chemical parameters (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Fluoride | 0.091 mg/l | 1.5 mg/l | 6 % | Mean · Wasserversorgung Herzogenbuchsee |
| Nitrate | 17.57 mg/l | 40 mg/l | 44 % | Mean · Wasserversorgung Herzogenbuchsee |
Metabolites (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Chlorothalonil metabolite R417888 | 0.0219 µg/l | 0.1 µg/l | 22 % | Mean · Wasserversorgung Herzogenbuchsee |
| Chlorothalonil metabolite R471811 | 0.3088 µg/l | 0.1 µg/l | 309 % Mean above the parametric value | Mean · Wasserversorgung Herzogenbuchsee |
Annual means and medians are not individual measured values, but the parametric values apply per sample. If a mean lies above it, at least one individual sample was above it — the mean does not say how many, or by how much. That is why this is not reported here as an exceedance of the parametric value. What counts remains the water supplier's publication, which each row links to.
Indicator parameters (5)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Chloride | 7.514 mg/l | — | — | Mean · Wasserversorgung Herzogenbuchsee |
| Sodium | 7.14 mg/l | 200 mg/l | 4 % | Mean · Wasserversorgung Herzogenbuchsee |
| Sulphate | 13.8 mg/l | — | — | Mean · Wasserversorgung Herzogenbuchsee |
| Temperature | 10.96 °C | — | — | Mean · Wasserversorgung Herzogenbuchsee |
| Turbidity | 0.2857 TE/F | — | — | Mean · Wasserversorgung Herzogenbuchsee |
Further parameters (4)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 94.757 mg/l | — | — | Mean · Wasserversorgung Herzogenbuchsee |
| Magnesium | 17.757 mg/l | — | — | Mean · Wasserversorgung Herzogenbuchsee |
| Potassium | 2.257 mg/l | — | — | Mean · Wasserversorgung Herzogenbuchsee |
| Total hardness | 30.93 °fH | — | — | Mean · Wasserversorgung Herzogenbuchsee |
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: 3360
Frequently asked questions about drinking water in Herzogenbuchsee
- How hard is the water in Herzogenbuchsee?
- EWK Herzogenbuchsee publishes a total hardness of 30.93 °fH for the supply zone Wasserversorgung Herzogenbuchsee — that corresponds to 17.3 °dH. 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: 2025, retrieved on 07/08/2026.
- How much nitrate is in the drinking water in Herzogenbuchsee?
- EWK Herzogenbuchsee publishes a nitrate value of 17.57 mg/l for the supply zone Wasserversorgung Herzogenbuchsee. The statutory parametric value is 40 mg/l; the measured value represents 44 % of the parametric value. Basis: 2025, retrieved on 07/08/2026.
- Who supplies the drinking water in Herzogenbuchsee?
- EWK Herzogenbuchsee. The values shown here come from the supply zone Wasserversorgung Herzogenbuchsee 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.