How hard is the water in Völkermarkt?

Wasserversorgung Herisau publishes a total hardness of 31.85 °fH for the supply zone Herisau — that corresponds to 17.8 °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: 2024, retrieved on 07/08/2026.

How much nitrate is in the drinking water in Völkermarkt?

Wasserversorgung Herisau publishes a nitrate value of 8.3 mg/l for the supply zone Herisau. The statutory parametric value is 40 mg/l; the measured value represents 21 % of the parametric value. Basis: 2024, retrieved on 07/08/2026.

Who supplies the drinking water in Völkermarkt?

Wasserversorgung Herisau. The values shown here come from the supply zone Herisau 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 Völkermarkt

One supply zone, water supplier: Wasserversorgung Herisau.

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.

Herisau

Wasserversorgung Herisau

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 31/12/2024. 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

17.8 °dH

Hardness range hard

Key values Herisau
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	8.3 mg/l	40 mg/l	21 %	Mean · Herisau
Escherichia coli (E. coli)	0 KBE/100ml	0/100 ml	—	Maximum · Median 0 · Herisau
Sulphate	4.5 mg/l	—	—	Mean · Herisau

Show all recorded parameters (13 — most recent value per parameter)

Microbiology (3)

Microbiology – Herisau
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aerobic mesophilic bacteria	2.4 KBE/ml	300 1/ml	—	Mean · Herisau
Escherichia coli (E. coli)	0 KBE/100ml	0/100 ml	—	Maximum · Median 0 · Herisau
Intestinal enterococci	0 KBE/100ml	0/100 ml	—	Maximum · Median 0 · Herisau

Chemical parameters (1)

Chemical parameters – Herisau
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	8.3 mg/l	40 mg/l	21 %	Mean · Herisau

Indicator parameters (6)

Indicator parameters – Herisau
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	8.83 mg/l	—	—	Mean · Herisau
Conductivity (25 °C)	598 µS/cm	—	—	Mean · Herisau
pH	7.58	—	—	Mean · Herisau
Sulphate	4.5 mg/l	—	—	Mean · Herisau
Temperature	11.8 °C	—	—	Mean · Herisau
Turbidity	0.11 TE/F	—	—	Mean · Herisau

Further parameters (3)

Further parameters – Herisau
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	94.3 mg/l	—	—	Mean · Herisau
Magnesium	20.33 mg/l	—	—	Mean · Herisau
Total hardness	31.85 °fH	—	—	Mean · Herisau

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/688/wasserversorgung-herisau/2559/herisau · 2024 · 2024 · retrieved on 07/08/2026

Postcodes in this zone: 9100

Frequently asked questions about drinking water in Völkermarkt

How hard is the water in Völkermarkt?: Wasserversorgung Herisau publishes a total hardness of 31.85 °fH for the supply zone Herisau — that corresponds to 17.8 °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: 2024, retrieved on 07/08/2026.
How much nitrate is in the drinking water in Völkermarkt?: Wasserversorgung Herisau publishes a nitrate value of 8.3 mg/l for the supply zone Herisau. The statutory parametric value is 40 mg/l; the measured value represents 21 % of the parametric value. Basis: 2024, retrieved on 07/08/2026.
Who supplies the drinking water in Völkermarkt?: Wasserversorgung Herisau. The values shown here come from the supply zone Herisau 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.

No data yet

For postcode 9121 there is no verified assignment yet.