Drinking water in Oetwil an der Limmat
3 supply zones — values can differ depending on the district. Below is the zone with the most documented parameters, the others collapsed underneath. To determine the exact match, look up the postcode.
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.
Grundwasserfassung Schanzen
Gruppenwasserversorgung GOWAssigned 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 | 3.27 mg/l | 40 mg/l | 8 % | Mean · Grundwasserfassung Schanzen |
| Escherichia coli (E. coli) | nn not detectable Unit not stated in the document | 0/100 ml | — | Maximum · Median nn · Grundwasserfassung Schanzen |
| Sulphate | 14.35 mg/l | — | — | Mean · Grundwasserfassung Schanzen |
| Sodium | 5.76 mg/l | 200 mg/l | 3 % | Mean · Grundwasserfassung Schanzen |
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 | 0.95 KBE/ml | 300 1/ml | — | Mean · Grundwasserfassung Schanzen |
| Escherichia coli (E. coli) | nn not detectable Unit not stated in the document | 0/100 ml | — | Maximum · Median nn · Grundwasserfassung Schanzen |
| Intestinal enterococci | nn not detectable Unit not stated in the document | 0/100 ml | — | Maximum · Median nn · Grundwasserfassung Schanzen |
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 · Grundwasserfassung Schanzen |
| Nitrate | 3.27 mg/l | 40 mg/l | 8 % | Mean · Grundwasserfassung Schanzen |
* 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 · Grundwasserfassung Schanzen |
| Chlorothalonil metabolite R471811 | 0.02 µg/l | 0.1 µg/l | 20 % | Mean · Grundwasserfassung Schanzen |
* 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.
Indicator parameters (6)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Chloride | 7.14 mg/l | — | — | Mean · Grundwasserfassung Schanzen |
| Conductivity (25 °C) | 356 µS/cm | — | — | Mean · Grundwasserfassung Schanzen |
| pH | 7.7 | — | — | Mean · Grundwasserfassung Schanzen |
| Sodium | 5.76 mg/l | 200 mg/l | 3 % | Mean · Grundwasserfassung Schanzen |
| Sulphate | 14.35 mg/l | — | — | Mean · Grundwasserfassung Schanzen |
| Temperature | 13.63 °C | — | — | Mean · Grundwasserfassung Schanzen |
Further parameters (4)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 56.1 mg/l | — | — | Mean · Grundwasserfassung Schanzen |
| Magnesium | 9.1 mg/l | — | — | Mean · Grundwasserfassung Schanzen |
| Potassium | 1.46 mg/l | — | — | Mean · Grundwasserfassung Schanzen |
| Total hardness | 17.72 °fH | — | — | Mean · Grundwasserfassung Schanzen |
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: 8955
Show 2 more supply zones
Hochzone Oetwil an der Limmat
Wasserversorgung Oetwil an der LimmatAssigned 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 | 7.5 mg/l | 40 mg/l | 19 % | Mean · Hochzone Oetwil an der Limmat |
| Escherichia coli (E. coli) | nn not detectable Unit not stated in the document | 0/100 ml | — | Maximum · Median nn · Hochzone Oetwil an der Limmat |
| Sulphate | 20.96 mg/l | — | — | Mean · Hochzone Oetwil an der Limmat |
| Sodium | 10.28 mg/l | 200 mg/l | 5 % | Mean · Hochzone Oetwil an der Limmat |
Show all recorded parameters (21 — most recent value per parameter)
Microbiology (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aerobic mesophilic bacteria | 40 KBE/ml | 300 1/ml | — | Mean · Hochzone Oetwil an der Limmat |
| Escherichia coli (E. coli) | nn not detectable Unit not stated in the document | 0/100 ml | — | Maximum · Median nn · Hochzone Oetwil an der Limmat |
| Intestinal enterococci | nn not detectable Unit not stated in the document | 0/100 ml | — | Maximum · Median nn · Hochzone Oetwil an der Limmat |
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 · Hochzone Oetwil an der Limmat |
| Nitrate | 7.5 mg/l | 40 mg/l | 19 % | Mean · Hochzone Oetwil an der Limmat |
* 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.
PFAS (4)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Perfluorohexane sulfonic acid (PFHxS) | 0.001 µg/l | 0.3 µg/l | 0.3 % | Mean · Hochzone Oetwil an der Limmat |
| Perfluorooctanesulfonic acid (PFOS) | 0.005 µg/l | 0.3 µg/l | 2 % | Mean · Hochzone Oetwil an der Limmat |
| Perfluorooctanoic acid (PFOA) | 0.002 µg/l | 0.5 µg/l | 0.4 % | Mean · Hochzone Oetwil an der Limmat |
| Trifluoroacetic acid (TFA) | 0.707 µg/l | — | — | Mean · Hochzone Oetwil an der Limmat |
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 · Hochzone Oetwil an der Limmat |
| Chlorothalonil metabolite R471811 | 0.025 µg/l | 0.1 µg/l | 25 % | Mean · Hochzone Oetwil an der Limmat |
* 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.
Indicator parameters (6)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Chloride | 15.55 mg/l | — | — | Mean · Hochzone Oetwil an der Limmat |
| Conductivity (25 °C) | 532.8 µS/cm | — | — | Mean · Hochzone Oetwil an der Limmat |
| pH | 7.5 | — | — | Mean · Hochzone Oetwil an der Limmat |
| Sodium | 10.28 mg/l | 200 mg/l | 5 % | Mean · Hochzone Oetwil an der Limmat |
| Sulphate | 20.96 mg/l | — | — | Mean · Hochzone Oetwil an der Limmat |
| Temperature | 14.6 °C | — | — | Mean · Hochzone Oetwil an der Limmat |
Further parameters (4)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 78 mg/l | — | — | Mean · Hochzone Oetwil an der Limmat |
| Magnesium | 17.4 mg/l | — | — | Mean · Hochzone Oetwil an der Limmat |
| Potassium | 1.96 mg/l | — | — | Mean · Hochzone Oetwil an der Limmat |
| Total hardness | 26.6 °fH | — | — | Mean · Hochzone Oetwil an der Limmat |
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: 8955
Niederzone Oetwil an der Limmat
Wasserversorgung Oetwil an der LimmatAssigned 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 | 6.8 mg/l | 40 mg/l | 17 % | Mean · Niederzone Oetwil an der Limmat |
| Escherichia coli (E. coli) | nn not detectable Unit not stated in the document | 0/100 ml | — | Maximum · Median nn · Niederzone Oetwil an der Limmat |
| Sulphate | 20.8 mg/l | — | — | Mean · Niederzone Oetwil an der Limmat |
| Sodium | 11.8 mg/l | 200 mg/l | 6 % | Mean · Niederzone Oetwil an der Limmat |
Show all recorded parameters (21 — most recent value per parameter)
Microbiology (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aerobic mesophilic bacteria | 28.6 KBE/ml | 300 1/ml | — | Mean · Niederzone Oetwil an der Limmat |
| Escherichia coli (E. coli) | nn not detectable Unit not stated in the document | 0/100 ml | — | Maximum · Median nn · Niederzone Oetwil an der Limmat |
| Intestinal enterococci | nn not detectable Unit not stated in the document | 0/100 ml | — | Maximum · Median nn · Niederzone Oetwil an der Limmat |
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 · Niederzone Oetwil an der Limmat |
| Nitrate | 6.8 mg/l | 40 mg/l | 17 % | Mean · Niederzone Oetwil an der Limmat |
* 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.
PFAS (4)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Perfluorohexane sulfonic acid (PFHxS) | 0.002 µg/l | 0.3 µg/l | 0.7 % | Mean · Niederzone Oetwil an der Limmat |
| Perfluorooctanesulfonic acid (PFOS) | 0.006 µg/l | 0.3 µg/l | 2 % | Mean · Niederzone Oetwil an der Limmat |
| Perfluorooctanoic acid (PFOA) | 0.003 µg/l | 0.5 µg/l | 0.6 % | Mean · Niederzone Oetwil an der Limmat |
| Trifluoroacetic acid (TFA) | 0.553 µg/l | — | — | Mean · Niederzone Oetwil an der Limmat |
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 · Niederzone Oetwil an der Limmat |
| Chlorothalonil metabolite R471811 | 0.02 µg/l | 0.1 µg/l | 20 % | Mean · Niederzone Oetwil an der Limmat |
* 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.
Indicator parameters (6)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Chloride | 18 mg/l | — | — | Mean · Niederzone Oetwil an der Limmat |
| Conductivity (25 °C) | 483 µS/cm | — | — | Mean · Niederzone Oetwil an der Limmat |
| pH | 7.5 | — | — | Mean · Niederzone Oetwil an der Limmat |
| Sodium | 11.8 mg/l | 200 mg/l | 6 % | Mean · Niederzone Oetwil an der Limmat |
| Sulphate | 20.8 mg/l | — | — | Mean · Niederzone Oetwil an der Limmat |
| Temperature | 14.8 °C | — | — | Mean · Niederzone Oetwil an der Limmat |
Further parameters (4)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 70.55 mg/l | — | — | Mean · Niederzone Oetwil an der Limmat |
| Magnesium | 13.15 mg/l | — | — | Mean · Niederzone Oetwil an der Limmat |
| Potassium | 2.2 mg/l | — | — | Mean · Niederzone Oetwil an der Limmat |
| Total hardness | 23 °fH | — | — | Mean · Niederzone Oetwil an der Limmat |
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: 8955
Frequently asked questions about drinking water in Oetwil an der Limmat
- How hard is the water in Oetwil an der Limmat?
- Gruppenwasserversorgung GOW publishes a total hardness of 17.72 °fH for the supply zone Grundwasserfassung Schanzen — that corresponds to 9.9 °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 Oetwil an der Limmat?
- Gruppenwasserversorgung GOW publishes a nitrate value of 3.27 mg/l for the supply zone Grundwasserfassung Schanzen. The statutory parametric value is 40 mg/l; the measured value represents 8 % of the parametric value. Basis: 2025, retrieved on 07/08/2026.
- Who supplies the drinking water in Oetwil an der Limmat?
- Gruppenwasserversorgung GOW. The values shown here come from the supply zone Grundwasserfassung Schanzen 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.