How hard is the water in Zuchwil?

WV Zuchwil publishes a total hardness of 25.1 °fH for the supply zone Zuchwil — that corresponds to 14.1 °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: 2023, retrieved on 07/08/2026.

How much nitrate is in the drinking water in Zuchwil?

WV Zuchwil publishes a nitrate value of 11.1 mg/l for the supply zone Zuchwil. The statutory parametric value is 40 mg/l; the measured value represents 28 % of the parametric value. Basis: 2023, retrieved on 07/08/2026.

Who supplies the drinking water in Zuchwil?

WV Zuchwil. The values shown here come from the supply zone Zuchwil 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.

Drinking water in Zuchwil

One supply zone, water supplier: WV Zuchwil.

How to read the share of the parametric value

12 % Share of the parametric value. The proportion of the permitted maximum that the measured value uses — here 12 %, so just over an eighth.

< 10 % * Below the limit of quantification. The substance was not detectable. The mark shows where the detection limit lies relative to the parametric value — the actual share of the parametric value is below that.

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.

Zuchwil

WV Zuchwil

Assigned 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 31/12/2023. 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.

Water hardness

14.1 °dH

Hardness range hard

Key values Zuchwil
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	11.1 mg/l	40 mg/l	28 %	Mean · Zuchwil
Escherichia coli (E. coli)	0 KBE/100ml	0/100 ml	—	Maximum · Median 0 · Zuchwil
Sodium	8.3 mg/l	200 mg/l	4 %	Mean · Zuchwil

Show all recorded parameters (15 — most recent value per parameter)

Microbiology (3)

Microbiology – Zuchwil
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aerobic mesophilic bacteria	6 KBE/ml	300 1/ml	—	Mean · Zuchwil
Escherichia coli (E. coli)	0 KBE/100ml	0/100 ml	—	Maximum · Median 0 · Zuchwil
Intestinal enterococci	0 KBE/100ml	0/100 ml	—	Maximum · Median 0 · Zuchwil

Chemical parameters (1)

Chemical parameters – Zuchwil
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	11.1 mg/l	40 mg/l	28 %	Mean · Zuchwil

Metabolites (2)

Metabolites – Zuchwil
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chlorothalonil metabolite R417888	0.04 µg/l	0.1 µg/l	40 %	Mean · Zuchwil
Chlorothalonil metabolite R471811	0.31 µg/l	0.1 µg/l	310 % Mean above the parametric value	Mean · Zuchwil

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 (5)

Indicator parameters – Zuchwil
Parameter	Value	Parametric value	Share of the parametric value	Reference
Conductivity (25 °C)	466 µS/cm	—	—	Mean · Zuchwil
pH	7.65	—	—	Mean · Zuchwil
Sodium	8.3 mg/l	200 mg/l	4 %	Mean · Zuchwil
Temperature	12.9 °C	—	—	Mean · Zuchwil
Turbidity	0.1 TE/F	—	—	Mean · Zuchwil

Further parameters (4)

Further parameters – Zuchwil
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	80.5 mg/l	—	—	Mean · Zuchwil
Magnesium	9 mg/l	—	—	Mean · Zuchwil
Potassium	2.3 mg/l	—	—	Mean · Zuchwil
Total hardness	25.1 °fH	—	—	Mean · Zuchwil

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.

Source: https://trinkwasser.ch/de/versorger/663/wv-zuchwil/1298/zuchwil · 2023 · 2023 · retrieved on 07/08/2026

Postcodes in this zone: 4528

Frequently asked questions about drinking water in Zuchwil

How hard is the water in Zuchwil?: WV Zuchwil publishes a total hardness of 25.1 °fH for the supply zone Zuchwil — that corresponds to 14.1 °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: 2023, retrieved on 07/08/2026.
How much nitrate is in the drinking water in Zuchwil?: WV Zuchwil publishes a nitrate value of 11.1 mg/l for the supply zone Zuchwil. The statutory parametric value is 40 mg/l; the measured value represents 28 % of the parametric value. Basis: 2023, retrieved on 07/08/2026.
Who supplies the drinking water in Zuchwil?: WV Zuchwil. The values shown here come from the supply zone Zuchwil 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.