Drinking water in Hergiswil NW
One supply zone, water supplier: Wasserversorgung Hergiswil.
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.
Gemeinde Hergiswil am See
Wasserversorgung HergiswilAssigned 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 | 5 mg/l | 40 mg/l | 13 % | Mean · Gemeinde Hergiswil am See |
| Escherichia coli (E. coli) | nn not detectable Unit not stated in the document | 0/100 ml | — | Maximum · Median nn · Gemeinde Hergiswil am See |
| Sulphate | 16 mg/l | — | — | Mean · Gemeinde Hergiswil am See |
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 | 4 KBE/ml | 300 1/ml | — | Mean · Gemeinde Hergiswil am See |
| Escherichia coli (E. coli) | nn not detectable Unit not stated in the document | 0/100 ml | — | Maximum · Median nn · Gemeinde Hergiswil am See |
| Intestinal enterococci | nn not detectable Unit not stated in the document | 0/100 ml | — | Maximum · Median nn · Gemeinde Hergiswil am See |
Chemical parameters (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 5 mg/l | 40 mg/l | 13 % | Mean · Gemeinde Hergiswil am See |
Metabolites (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Chlorothalonil metabolite R417888 | 0 µg/l | 0.1 µg/l | 0 % | Mean · Gemeinde Hergiswil am See |
| Chlorothalonil metabolite R471811 | 0 µg/l | 0.1 µg/l | 0 % | Mean · Gemeinde Hergiswil am See |
Indicator parameters (6)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Chloride | 3.9 mg/l | — | — | Mean · Gemeinde Hergiswil am See |
| Conductivity (25 °C) | 345 µS/cm | — | — | Mean · Gemeinde Hergiswil am See |
| pH | 7.7 | — | — | Mean · Gemeinde Hergiswil am See |
| Sulphate | 16 mg/l | — | — | Mean · Gemeinde Hergiswil am See |
| Temperature | 13 °C | — | — | Mean · Gemeinde Hergiswil am See |
| Turbidity | 0.2 TE/F | — | — | Mean · Gemeinde Hergiswil am See |
Further parameters (4)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 59 mg/l | — | — | Mean · Gemeinde Hergiswil am See |
| Dissolved organic carbon (DOC) | 0.6 mg/l | — | — | Mean · Gemeinde Hergiswil am See |
| Magnesium | 6 mg/l | — | — | Mean · Gemeinde Hergiswil am See |
| Total hardness | 18 °fH | — | — | Mean · Gemeinde Hergiswil am See |
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: 6052
Frequently asked questions about drinking water in Hergiswil NW
- How hard is the water in Hergiswil NW?
- Wasserversorgung Hergiswil publishes a total hardness of 18 °fH for the supply zone Gemeinde Hergiswil am See — that corresponds to 10.1 °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: 2022, retrieved on 07/08/2026.
- How much nitrate is in the drinking water in Hergiswil NW?
- Wasserversorgung Hergiswil publishes a nitrate value of 5 mg/l for the supply zone Gemeinde Hergiswil am See. The statutory parametric value is 40 mg/l; the measured value represents 13 % of the parametric value. Basis: 2022, retrieved on 07/08/2026.
- Who supplies the drinking water in Hergiswil NW?
- Wasserversorgung Hergiswil. The values shown here come from the supply zone Gemeinde Hergiswil am See 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.