Drinking water in Wil ZH
One supply zone, water supplier: Wasserversorgung Wil ZH.
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.
Wil ZH / Hüslihof / Buchenloo
Wasserversorgung Wil ZHAssigned 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 31/12/2024. 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 | 9.3 mg/l | 40 mg/l | 23 % | Mean · Wil ZH / Hüslihof / Buchenloo |
| Escherichia coli (E. coli) | 0 KBE/100ml | 0/100 ml | — | Maximum · Median 0 · Wil ZH / Hüslihof / Buchenloo |
| Sulphate | 14.7 mg/l | — | — | Mean · Wil ZH / Hüslihof / Buchenloo |
| Sodium | 4.7 mg/l | 200 mg/l | 2 % | Mean · Wil ZH / Hüslihof / Buchenloo |
Show all recorded parameters (17 — most recent value per parameter)
Microbiology (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aerobic mesophilic bacteria | 21 KBE/ml | 300 1/ml | — | Mean · Wil ZH / Hüslihof / Buchenloo |
| Escherichia coli (E. coli) | 0 KBE/100ml | 0/100 ml | — | Maximum · Median 0 · Wil ZH / Hüslihof / Buchenloo |
| Intestinal enterococci | 0 KBE/100ml | 0/100 ml | — | Maximum · Median 0 · Wil ZH / Hüslihof / Buchenloo |
Chemical parameters (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Fluoride | < 0.1 mg/l below limit of quantification | 1.5 mg/l | < 7 % * | Mean · Wil ZH / Hüslihof / Buchenloo |
| Nitrate | 9.3 mg/l | 40 mg/l | 23 % | Mean · Wil ZH / Hüslihof / Buchenloo |
* 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.
Metabolites (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Chlorothalonil metabolite R417888 | < 0.02 µg/l below limit of quantification | 0.1 µg/l | < 20 % * | Mean · Wil ZH / Hüslihof / Buchenloo |
| Chlorothalonil metabolite R471811 | 0.121 µg/l | 0.1 µg/l | 121 % Mean above the parametric value | Mean · Wil ZH / Hüslihof / Buchenloo |
* 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.
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 (6)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Chloride | 4.3 mg/l | — | — | Mean · Wil ZH / Hüslihof / Buchenloo |
| Conductivity (25 °C) | 454 µS/cm | — | — | Mean · Wil ZH / Hüslihof / Buchenloo |
| pH | 7.35 | — | — | Mean · Wil ZH / Hüslihof / Buchenloo |
| Sodium | 4.7 mg/l | 200 mg/l | 2 % | Mean · Wil ZH / Hüslihof / Buchenloo |
| Sulphate | 14.7 mg/l | — | — | Mean · Wil ZH / Hüslihof / Buchenloo |
| Temperature | 15.2 °C | — | — | Mean · Wil ZH / Hüslihof / Buchenloo |
Further parameters (4)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 84.3 mg/l | — | — | Mean · Wil ZH / Hüslihof / Buchenloo |
| Magnesium | 14 mg/l | — | — | Mean · Wil ZH / Hüslihof / Buchenloo |
| Potassium | 0.58 mg/l | — | — | Mean · Wil ZH / Hüslihof / Buchenloo |
| Total hardness | 26.8 °fH | — | — | Mean · Wil ZH / Hüslihof / Buchenloo |
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: 8196
Frequently asked questions about drinking water in Wil ZH
- How hard is the water in Wil ZH?
- Wasserversorgung Wil ZH publishes a total hardness of 26.8 °fH for the supply zone Wil ZH / Hüslihof / Buchenloo — that corresponds to 15 °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: 2024, retrieved on 07/08/2026.
- How much nitrate is in the drinking water in Wil ZH?
- Wasserversorgung Wil ZH publishes a nitrate value of 9.3 mg/l for the supply zone Wil ZH / Hüslihof / Buchenloo. The statutory parametric value is 40 mg/l; the measured value represents 23 % of the parametric value. Basis: 2024, retrieved on 07/08/2026.
- Who supplies the drinking water in Wil ZH?
- Wasserversorgung Wil ZH. The values shown here come from the supply zone Wil ZH / Hüslihof / Buchenloo 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.