Drinking water in Agasul, Illnau
One supply zone, water supplier: Wasserversorgung Illnau-Effretikon.
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.
Illnau-Effretikon
Wasserversorgung Illnau-EffretikonAssigned 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 | 22.5 mg/l | 40 mg/l | 56 % | Mean · Illnau-Effretikon |
| Escherichia coli (E. coli) | 1 KBE/100ml | 0/100 ml | above the parametric value — this parameter must not be detectable | Maximum · Median 0 · Illnau-Effretikon |
| Sulphate | 7.5 mg/l | — | — | Mean · Illnau-Effretikon |
| Sodium | 7.1 mg/l | 200 mg/l | 4 % | Mean · Illnau-Effretikon |
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 (17 — most recent value per parameter)
Microbiology (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aerobic mesophilic bacteria | 15 KBE/ml | 300 1/ml | — | Mean · Illnau-Effretikon |
| Escherichia coli (E. coli) | 1 KBE/100ml | 0/100 ml | above the parametric value — this parameter must not be detectable | Maximum · Median 0 · Illnau-Effretikon |
| Intestinal enterococci | 0 KBE/100ml | 0/100 ml | — | Maximum · Median 0 · Illnau-Effretikon |
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 mg/l | 1.5 mg/l | 0 % | Mean · Illnau-Effretikon |
| Nitrate | 22.5 mg/l | 40 mg/l | 56 % | Mean · Illnau-Effretikon |
Metabolites (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Chlorothalonil metabolite R417888 | 0.035 µg/l | 0.1 µg/l | 35 % | Mean · Illnau-Effretikon |
| Chlorothalonil metabolite R471811 | 0.075 µg/l | 0.1 µg/l | 75 % | Mean · Illnau-Effretikon |
Indicator parameters (6)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Chloride | 10.5 mg/l | — | — | Mean · Illnau-Effretikon |
| Conductivity (25 °C) | 555 µS/cm | — | — | Mean · Illnau-Effretikon |
| pH | 7.5 | — | — | Mean · Illnau-Effretikon |
| Sodium | 7.1 mg/l | 200 mg/l | 4 % | Mean · Illnau-Effretikon |
| Sulphate | 7.5 mg/l | — | — | Mean · Illnau-Effretikon |
| Temperature | 12.5 °C | — | — | Mean · Illnau-Effretikon |
Further parameters (4)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 96.5 mg/l | — | — | Mean · Illnau-Effretikon |
| Magnesium | 24 mg/l | — | — | Mean · Illnau-Effretikon |
| Potassium | 1.2 mg/l | — | — | Mean · Illnau-Effretikon |
| Total hardness | 33.5 °fH | — | — | Mean · Illnau-Effretikon |
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: 8308
Frequently asked questions about drinking water in Agasul, Illnau
- How hard is the water in Agasul, Illnau?
- Wasserversorgung Illnau-Effretikon publishes a total hardness of 33.5 °fH for the supply zone Illnau-Effretikon — that corresponds to 18.8 °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 Agasul, Illnau?
- Wasserversorgung Illnau-Effretikon publishes a nitrate value of 22.5 mg/l for the supply zone Illnau-Effretikon. The statutory parametric value is 40 mg/l; the measured value represents 56 % of the parametric value. Basis: 2025, retrieved on 07/08/2026.
- Who supplies the drinking water in Agasul, Illnau?
- Wasserversorgung Illnau-Effretikon. The values shown here come from the supply zone Illnau-Effretikon 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.