Drinking water in Fahrweid
5 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.
Geroldswil Hochzone
Wasserversorgung GeroldswilAssigned 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 | 7.07 mg/l | 40 mg/l | 18 % | Mean · Geroldswil Hochzone |
| Escherichia coli (E. coli) | nn not detectable Unit not stated in the document | 0/100 ml | — | Maximum · Median nn · Geroldswil Hochzone |
| Sulphate | 20.52 mg/l | — | — | Mean · Geroldswil Hochzone |
| Sodium | 10.72 mg/l | 200 mg/l | 5 % | Mean · Geroldswil Hochzone |
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 | 3.25 KBE/ml | 300 1/ml | — | Mean · Geroldswil Hochzone |
| Escherichia coli (E. coli) | nn not detectable Unit not stated in the document | 0/100 ml | — | Maximum · Median nn · Geroldswil Hochzone |
| Intestinal enterococci | nn not detectable Unit not stated in the document | 0/100 ml | — | Maximum · Median nn · Geroldswil Hochzone |
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 · Geroldswil Hochzone |
| Nitrate | 7.07 mg/l | 40 mg/l | 18 % | Mean · Geroldswil Hochzone |
* 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 · Geroldswil Hochzone |
| Perfluorooctanesulfonic acid (PFOS) | 0.007 µg/l | 0.3 µg/l | 2 % | Mean · Geroldswil Hochzone |
| Perfluorooctanoic acid (PFOA) | 0.003 µg/l | 0.5 µg/l | 0.6 % | Mean · Geroldswil Hochzone |
| Trifluoroacetic acid (TFA) | 0.613 µg/l | — | — | Mean · Geroldswil Hochzone |
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 · Geroldswil Hochzone |
| Chlorothalonil metabolite R471811 | 0.02 µg/l | 0.1 µg/l | 20 % | Mean · Geroldswil Hochzone |
* 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 | 16.07 mg/l | — | — | Mean · Geroldswil Hochzone |
| Conductivity (25 °C) | 504.75 µS/cm | — | — | Mean · Geroldswil Hochzone |
| pH | 7.6 | — | — | Mean · Geroldswil Hochzone |
| Sodium | 10.72 mg/l | 200 mg/l | 5 % | Mean · Geroldswil Hochzone |
| Sulphate | 20.52 mg/l | — | — | Mean · Geroldswil Hochzone |
| Temperature | 14.47 °C | — | — | Mean · Geroldswil Hochzone |
Further parameters (4)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 73.97 mg/l | — | — | Mean · Geroldswil Hochzone |
| Magnesium | 15.35 mg/l | — | — | Mean · Geroldswil Hochzone |
| Potassium | 2.05 mg/l | — | — | Mean · Geroldswil Hochzone |
| Total hardness | 24.77 °fH | — | — | Mean · Geroldswil Hochzone |
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: 8951
Show 4 more supply zones
Geroldswil Niederzone und Fahrweid
Wasserversorgung GeroldswilAssigned 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 | 6.4 mg/l | 40 mg/l | 16 % | Mean · Geroldswil Niederzone und Fahrweid |
| Escherichia coli (E. coli) | nn not detectable Unit not stated in the document | 0/100 ml | — | Maximum · Median nn · Geroldswil Niederzone und Fahrweid |
| Sulphate | 20.2 mg/l | — | — | Mean · Geroldswil Niederzone und Fahrweid |
| Sodium | 11 mg/l | 200 mg/l | 5 % | Mean · Geroldswil Niederzone und Fahrweid |
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 | 1.08 KBE/ml | 300 1/ml | — | Mean · Geroldswil Niederzone und Fahrweid |
| Escherichia coli (E. coli) | nn not detectable Unit not stated in the document | 0/100 ml | — | Maximum · Median nn · Geroldswil Niederzone und Fahrweid |
| Intestinal enterococci | nn not detectable Unit not stated in the document | 0/100 ml | — | Maximum · Median nn · Geroldswil Niederzone und Fahrweid |
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 · Geroldswil Niederzone und Fahrweid |
| Nitrate | 6.4 mg/l | 40 mg/l | 16 % | Mean · Geroldswil Niederzone und Fahrweid |
* 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 · Geroldswil Niederzone und Fahrweid |
| Perfluorooctanesulfonic acid (PFOS) | 0.006 µg/l | 0.3 µg/l | 2 % | Mean · Geroldswil Niederzone und Fahrweid |
| Perfluorooctanoic acid (PFOA) | 0.003 µg/l | 0.5 µg/l | 0.6 % | Mean · Geroldswil Niederzone und Fahrweid |
| Trifluoroacetic acid (TFA) | 0.586 µg/l | — | — | Mean · Geroldswil Niederzone und Fahrweid |
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 · Geroldswil Niederzone und Fahrweid |
| Chlorothalonil metabolite R471811 | 0.02 µg/l | 0.1 µg/l | 20 % | Mean · Geroldswil Niederzone und Fahrweid |
* 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 | 16.7 mg/l | — | — | Mean · Geroldswil Niederzone und Fahrweid |
| Conductivity (25 °C) | 469.5 µS/cm | — | — | Mean · Geroldswil Niederzone und Fahrweid |
| pH | 7.5 | — | — | Mean · Geroldswil Niederzone und Fahrweid |
| Sodium | 11 mg/l | 200 mg/l | 5 % | Mean · Geroldswil Niederzone und Fahrweid |
| Sulphate | 20.2 mg/l | — | — | Mean · Geroldswil Niederzone und Fahrweid |
| Temperature | 15.1 °C | — | — | Mean · Geroldswil Niederzone und Fahrweid |
Further parameters (4)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 68.5 mg/l | — | — | Mean · Geroldswil Niederzone und Fahrweid |
| Magnesium | 12.86 mg/l | — | — | Mean · Geroldswil Niederzone und Fahrweid |
| Potassium | 2.2 mg/l | — | — | Mean · Geroldswil Niederzone und Fahrweid |
| Total hardness | 22.4 °fH | — | — | Mean · Geroldswil Niederzone und Fahrweid |
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: 8951
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: 8951
Hochzone Weiningen
Wasserversorgung WeiningenAssigned 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 | 10.82 mg/l | 40 mg/l | 27 % | Mean · Hochzone Weiningen |
| Escherichia coli (E. coli) | nn not detectable Unit not stated in the document | 0/100 ml | — | Maximum · Median nn · Hochzone Weiningen |
| Sulphate | 19.92 mg/l | — | — | Mean · Hochzone Weiningen |
| Sodium | 3.95 mg/l | 200 mg/l | 2 % | Mean · Hochzone Weiningen |
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 | 2.25 KBE/ml | 300 1/ml | — | Mean · Hochzone Weiningen |
| Escherichia coli (E. coli) | nn not detectable Unit not stated in the document | 0/100 ml | — | Maximum · Median nn · Hochzone Weiningen |
| Intestinal enterococci | nn not detectable Unit not stated in the document | 0/100 ml | — | Maximum · Median nn · Hochzone Weiningen |
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 Weiningen |
| Nitrate | 10.82 mg/l | 40 mg/l | 27 % | Mean · Hochzone Weiningen |
* 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 · Hochzone Weiningen |
| Chlorothalonil metabolite R471811 | 0.06 µg/l | 0.1 µg/l | 60 % | Mean · Hochzone Weiningen |
* 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 | 4.67 mg/l | — | — | Mean · Hochzone Weiningen |
| Conductivity (25 °C) | 667.5 µS/cm | — | — | Mean · Hochzone Weiningen |
| pH | 7.42 | — | — | Mean · Hochzone Weiningen |
| Sodium | 3.95 mg/l | 200 mg/l | 2 % | Mean · Hochzone Weiningen |
| Sulphate | 19.92 mg/l | — | — | Mean · Hochzone Weiningen |
| Temperature | 13.72 °C | — | — | Mean · Hochzone Weiningen |
Further parameters (4)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 102.5 mg/l | — | — | Mean · Hochzone Weiningen |
| Magnesium | 30.15 mg/l | — | — | Mean · Hochzone Weiningen |
| Potassium | 0.8 mg/l | — | — | Mean · Hochzone Weiningen |
| Total hardness | 37.2 °fH | — | — | Mean · Hochzone Weiningen |
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: 8951
Niederzone Weiningen (inkl. Fahrweid)
Wasserversorgung WeiningenAssigned 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 | 6.6 mg/l | 40 mg/l | 17 % | Mean · Niederzone Weiningen (inkl. Fahrweid) |
| Escherichia coli (E. coli) | nn not detectable Unit not stated in the document | 0/100 ml | — | Maximum · Median nn · Niederzone Weiningen (inkl. Fahrweid) |
| Sulphate | 20.5 mg/l | — | — | Mean · Niederzone Weiningen (inkl. Fahrweid) |
| Sodium | 11.7 mg/l | 200 mg/l | 6 % | Mean · Niederzone Weiningen (inkl. Fahrweid) |
Show all recorded parameters (20 — most recent value per parameter)
Microbiology (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aerobic mesophilic bacteria | 1.08 KBE/ml | 300 1/ml | — | Mean · Niederzone Weiningen (inkl. Fahrweid) |
| Escherichia coli (E. coli) | nn not detectable Unit not stated in the document | 0/100 ml | — | Maximum · Median nn · Niederzone Weiningen (inkl. Fahrweid) |
| Intestinal enterococci | nn not detectable Unit not stated in the document | 0/100 ml | — | Maximum · Median nn · Niederzone Weiningen (inkl. Fahrweid) |
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 Weiningen (inkl. Fahrweid) |
| Nitrate | 6.6 mg/l | 40 mg/l | 17 % | Mean · Niederzone Weiningen (inkl. Fahrweid) |
* 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 (3)
| 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 Weiningen (inkl. Fahrweid) |
| Perfluorooctanesulfonic acid (PFOS) | 0.007 µg/l | 0.3 µg/l | 2 % | Mean · Niederzone Weiningen (inkl. Fahrweid) |
| Perfluorooctanoic acid (PFOA) | 0.003 µg/l | 0.5 µg/l | 0.6 % | Mean · Niederzone Weiningen (inkl. Fahrweid) |
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 Weiningen (inkl. Fahrweid) |
| Chlorothalonil metabolite R471811 | 0.02 µg/l | 0.1 µg/l | 20 % | Mean · Niederzone Weiningen (inkl. Fahrweid) |
* 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 | 17.6 mg/l | — | — | Mean · Niederzone Weiningen (inkl. Fahrweid) |
| Conductivity (25 °C) | 478 µS/cm | — | — | Mean · Niederzone Weiningen (inkl. Fahrweid) |
| pH | 7.55 | — | — | Mean · Niederzone Weiningen (inkl. Fahrweid) |
| Sodium | 11.7 mg/l | 200 mg/l | 6 % | Mean · Niederzone Weiningen (inkl. Fahrweid) |
| Sulphate | 20.5 mg/l | — | — | Mean · Niederzone Weiningen (inkl. Fahrweid) |
| Temperature | 14.95 °C | — | — | Mean · Niederzone Weiningen (inkl. Fahrweid) |
Further parameters (4)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 69.8 mg/l | — | — | Mean · Niederzone Weiningen (inkl. Fahrweid) |
| Magnesium | 13.2 mg/l | — | — | Mean · Niederzone Weiningen (inkl. Fahrweid) |
| Potassium | 2.2 mg/l | — | — | Mean · Niederzone Weiningen (inkl. Fahrweid) |
| Total hardness | 22.85 °fH | — | — | Mean · Niederzone Weiningen (inkl. Fahrweid) |
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: 8951
Frequently asked questions about drinking water in Fahrweid
- How hard is the water in Fahrweid?
- Wasserversorgung Geroldswil publishes a total hardness of 24.77 °fH for the supply zone Geroldswil Hochzone — that corresponds to 13.9 °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 Fahrweid?
- Wasserversorgung Geroldswil publishes a nitrate value of 7.07 mg/l for the supply zone Geroldswil Hochzone. The statutory parametric value is 40 mg/l; the measured value represents 18 % of the parametric value. Basis: 2025, retrieved on 07/08/2026.
- Who supplies the drinking water in Fahrweid?
- Wasserversorgung Geroldswil. The values shown here come from the supply zone Geroldswil Hochzone 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.