How hard is the water in Fontannen b. Wolhusen, Wolhusen?

Wasserversorgung Werthenstein publishes a total hardness of 28.2 °fH for the supply zone Wolhusen Dorf / Wolhusen-Markt (Werthenstein) / Horüti, Höchweid (Ruswil) — that corresponds to 15.8 °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: 2026, retrieved on 07/08/2026.

How much nitrate is in the drinking water in Fontannen b. Wolhusen, Wolhusen?

Wasserversorgung Werthenstein publishes a nitrate value of 15 mg/l for the supply zone Wolhusen Dorf / Wolhusen-Markt (Werthenstein) / Horüti, Höchweid (Ruswil). The statutory parametric value is 40 mg/l; the measured value represents 38 % of the parametric value. Basis: 2026, retrieved on 07/08/2026.

Who supplies the drinking water in Fontannen b. Wolhusen, Wolhusen?

Wasserversorgung Werthenstein. The values shown here come from the supply zone Wolhusen Dorf / Wolhusen-Markt (Werthenstein) / Horüti, Höchweid (Ruswil) 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 Fontannen b. Wolhusen, Wolhusen

One supply zone, water supplier: Wasserversorgung Werthenstein.

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.

Wolhusen Dorf / Wolhusen-Markt (Werthenstein) / Horüti, Höchweid (Ruswil)

Wasserversorgung Werthenstein

Assigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.

Water hardness

15.8 °dH

Hardness range hard

Key values Wolhusen Dorf / Wolhusen-Markt (Werthenstein) / Horüti, Höchweid (Ruswil)
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	15 mg/l	40 mg/l	38 %	Mean · Wolhusen Dorf / Wolhusen-Markt (Werthenstein) / Horüti, Höchweid (Ruswil)
Escherichia coli (E. coli)	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Wolhusen Dorf / Wolhusen-Markt (Werthenstein) / Horüti, Höchweid (Ruswil)
Sulphate	6 mg/l	—	—	Mean · Wolhusen Dorf / Wolhusen-Markt (Werthenstein) / Horüti, Höchweid (Ruswil)
Sodium	4.4 mg/l	200 mg/l	2 %	Mean · Wolhusen Dorf / Wolhusen-Markt (Werthenstein) / Horüti, Höchweid (Ruswil)

Show all recorded parameters (14 — most recent value per parameter)

Microbiology (3)

Microbiology – Wolhusen Dorf / Wolhusen-Markt (Werthenstein) / Horüti, Höchweid (Ruswil)
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aerobic mesophilic bacteria	17.4 KBE/ml	300 1/ml	—	Mean · Wolhusen Dorf / Wolhusen-Markt (Werthenstein) / Horüti, Höchweid (Ruswil)
Escherichia coli (E. coli)	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Wolhusen Dorf / Wolhusen-Markt (Werthenstein) / Horüti, Höchweid (Ruswil)
Intestinal enterococci	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Wolhusen Dorf / Wolhusen-Markt (Werthenstein) / Horüti, Höchweid (Ruswil)

Chemical parameters (1)

Chemical parameters – Wolhusen Dorf / Wolhusen-Markt (Werthenstein) / Horüti, Höchweid (Ruswil)
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	15 mg/l	40 mg/l	38 %	Mean · Wolhusen Dorf / Wolhusen-Markt (Werthenstein) / Horüti, Höchweid (Ruswil)

Indicator parameters (6)

Indicator parameters – Wolhusen Dorf / Wolhusen-Markt (Werthenstein) / Horüti, Höchweid (Ruswil)
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	4.6 mg/l	—	—	Mean · Wolhusen Dorf / Wolhusen-Markt (Werthenstein) / Horüti, Höchweid (Ruswil)
Conductivity (25 °C)	551 µS/cm	—	—	Mean · Wolhusen Dorf / Wolhusen-Markt (Werthenstein) / Horüti, Höchweid (Ruswil)
pH	7.4	—	—	Mean · Wolhusen Dorf / Wolhusen-Markt (Werthenstein) / Horüti, Höchweid (Ruswil)
Sodium	4.4 mg/l	200 mg/l	2 %	Mean · Wolhusen Dorf / Wolhusen-Markt (Werthenstein) / Horüti, Höchweid (Ruswil)
Sulphate	6 mg/l	—	—	Mean · Wolhusen Dorf / Wolhusen-Markt (Werthenstein) / Horüti, Höchweid (Ruswil)
Temperature	11.7 °C	—	—	Mean · Wolhusen Dorf / Wolhusen-Markt (Werthenstein) / Horüti, Höchweid (Ruswil)

Further parameters (4)

Further parameters – Wolhusen Dorf / Wolhusen-Markt (Werthenstein) / Horüti, Höchweid (Ruswil)
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	97 mg/l	—	—	Mean · Wolhusen Dorf / Wolhusen-Markt (Werthenstein) / Horüti, Höchweid (Ruswil)
Magnesium	10 mg/l	—	—	Mean · Wolhusen Dorf / Wolhusen-Markt (Werthenstein) / Horüti, Höchweid (Ruswil)
Potassium	1.1 mg/l	—	—	Mean · Wolhusen Dorf / Wolhusen-Markt (Werthenstein) / Horüti, Höchweid (Ruswil)
Total hardness	28.2 °fH	—	—	Mean · Wolhusen Dorf / Wolhusen-Markt (Werthenstein) / Horüti, Höchweid (Ruswil)

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/1526/wasserversorgung-werthenstein/3488/wolhusen-dorf-wolhusen-markt-werthenstein-horuti-hochweid-ruswil · 2026 · 2026 · retrieved on 07/08/2026

Postcodes in this zone: 6110

Frequently asked questions about drinking water in Fontannen b. Wolhusen, Wolhusen

How hard is the water in Fontannen b. Wolhusen, Wolhusen?: Wasserversorgung Werthenstein publishes a total hardness of 28.2 °fH for the supply zone Wolhusen Dorf / Wolhusen-Markt (Werthenstein) / Horüti, Höchweid (Ruswil) — that corresponds to 15.8 °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: 2026, retrieved on 07/08/2026.
How much nitrate is in the drinking water in Fontannen b. Wolhusen, Wolhusen?: Wasserversorgung Werthenstein publishes a nitrate value of 15 mg/l for the supply zone Wolhusen Dorf / Wolhusen-Markt (Werthenstein) / Horüti, Höchweid (Ruswil). The statutory parametric value is 40 mg/l; the measured value represents 38 % of the parametric value. Basis: 2026, retrieved on 07/08/2026.
Who supplies the drinking water in Fontannen b. Wolhusen, Wolhusen?: Wasserversorgung Werthenstein. The values shown here come from the supply zone Wolhusen Dorf / Wolhusen-Markt (Werthenstein) / Horüti, Höchweid (Ruswil) 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.