How hard is the water in Zermatt?

Einwohnergemeinde Zermatt publishes a total hardness of 9.2 °F for the supply zone Leitungsnetz 2, Vispastrasse 176 — that corresponds to 5.2 °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: Befund des Kantonslaboratoriums vom 26.05.2026, retrieved on 12/08/2026.

How much nitrate is in the drinking water in Zermatt?

Einwohnergemeinde Zermatt publishes a nitrate value of 1.0 mg/L for the supply zone Leitungsnetz 2, Vispastrasse 176. The statutory parametric value is 40 mg/l; the measured value represents 3 % of the parametric value. Basis: Befund des Kantonslaboratoriums vom 26.05.2026, retrieved on 12/08/2026.

Who supplies the drinking water in Zermatt?

Einwohnergemeinde Zermatt. The values shown here come from the supply zone Leitungsnetz 2, Vispastrasse 176 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 Zermatt

One supply zone, water supplier: Einwohnergemeinde Zermatt.

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.

Leitungsnetz 2, Vispastrasse 176

Einwohnergemeinde Zermatt

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

Water hardness

5.2 °dH

Hardness range soft

Key values Leitungsnetz 2, Vispastrasse 176
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	1.0 mg/L	40 mg/l	3 %	Single value · Leitungsnetz 2, Vispastrasse 176
Sulphate	35.2 mg/L	—	—	Single value · Leitungsnetz 2, Vispastrasse 176
Sodium	0.9 mg/L	200 mg/l	0.5 %	Single value · Leitungsnetz 2, Vispastrasse 176

Show all recorded parameters (9 — most recent value per parameter)

Chemical parameters (1)

Chemical parameters – Leitungsnetz 2, Vispastrasse 176
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	1.0 mg/L	40 mg/l	3 %	Single value · Leitungsnetz 2, Vispastrasse 176

Indicator parameters (4)

Indicator parameters – Leitungsnetz 2, Vispastrasse 176
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	0.5 mg/L	—	—	Single value · Leitungsnetz 2, Vispastrasse 176
Sodium	0.9 mg/L	200 mg/l	0.5 %	Single value · Leitungsnetz 2, Vispastrasse 176
Sulphate	35.2 mg/L	—	—	Single value · Leitungsnetz 2, Vispastrasse 176
Turbidity	<0.2 TE/F below limit of quantification	—	—	Single value · Leitungsnetz 2, Vispastrasse 176

Further parameters (4)

Further parameters – Leitungsnetz 2, Vispastrasse 176
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	23.6 mg/L	—	—	Single value · Leitungsnetz 2, Vispastrasse 176
Carbonate hardness	6.0 °F	—	—	Single value · Leitungsnetz 2, Vispastrasse 176
Magnesium	8.1 mg/L	—	—	Single value · Leitungsnetz 2, Vispastrasse 176
Total hardness	9.2 °F	—	—	Single value · Leitungsnetz 2, Vispastrasse 176

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://gemeinde.zermatt.ch/wvz/wasserqualitaet · Befund des Kantonslaboratoriums vom 26.05.2026 · 2025 · retrieved on 12/08/2026

Postcodes in this zone: 3920

Frequently asked questions about drinking water in Zermatt

How hard is the water in Zermatt?: Einwohnergemeinde Zermatt publishes a total hardness of 9.2 °F for the supply zone Leitungsnetz 2, Vispastrasse 176 — that corresponds to 5.2 °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: Befund des Kantonslaboratoriums vom 26.05.2026, retrieved on 12/08/2026.
How much nitrate is in the drinking water in Zermatt?: Einwohnergemeinde Zermatt publishes a nitrate value of 1.0 mg/L for the supply zone Leitungsnetz 2, Vispastrasse 176. The statutory parametric value is 40 mg/l; the measured value represents 3 % of the parametric value. Basis: Befund des Kantonslaboratoriums vom 26.05.2026, retrieved on 12/08/2026.
Who supplies the drinking water in Zermatt?: Einwohnergemeinde Zermatt. The values shown here come from the supply zone Leitungsnetz 2, Vispastrasse 176 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.