How hard is the water in Hittnau?

Wasserversorgung Hittnau publishes a total hardness of 34.3 °fH for the supply zone Wasserversorgung Hittnau — that corresponds to 19.2 °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: 2025, retrieved on 07/08/2026.

How much nitrate is in the drinking water in Hittnau?

Wasserversorgung Hittnau publishes a nitrate value of 7 mg/l for the supply zone Wasserversorgung Hittnau. 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 Hittnau?

Wasserversorgung Hittnau. The values shown here come from the supply zone Wasserversorgung Hittnau 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 Hittnau

One supply zone, water supplier: Wasserversorgung Hittnau.

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.

Wasserversorgung Hittnau

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

Water hardness

19.2 °dH

Hardness range hard

Key values Wasserversorgung Hittnau
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	7 mg/l	40 mg/l	18 %	Mean · Wasserversorgung Hittnau
Escherichia coli (E. coli)	1 KBE/100ml	0/100 ml	above the parametric value — this parameter must not be detectable	Maximum · Median 0 · Wasserversorgung Hittnau
Sulphate	3 mg/l	—	—	Mean · Wasserversorgung Hittnau
Sodium	6.25 mg/l	200 mg/l	3 %	Mean · Wasserversorgung Hittnau

An exceedance of a parametric value does not automatically mean a health risk; the statutory parametric values include safety margins. Assessment and any measures are the responsibility of the competent health authority of the respective country.

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

Microbiology (3)

Microbiology – Wasserversorgung Hittnau
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aerobic mesophilic bacteria	25 KBE/ml	300 1/ml	—	Mean · Wasserversorgung Hittnau
Escherichia coli (E. coli)	1 KBE/100ml	0/100 ml	above the parametric value — this parameter must not be detectable	Maximum · Median 0 · Wasserversorgung Hittnau
Intestinal enterococci	3 KBE/100ml	0/100 ml	above the parametric value — this parameter must not be detectable	Maximum · Median 0 · Wasserversorgung Hittnau

Chemical parameters (1)

Chemical parameters – Wasserversorgung Hittnau
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	7 mg/l	40 mg/l	18 %	Mean · Wasserversorgung Hittnau

Indicator parameters (6)

Indicator parameters – Wasserversorgung Hittnau
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	8 mg/l	—	—	Mean · Wasserversorgung Hittnau
Conductivity (25 °C)	564 µS/cm	—	—	Mean · Wasserversorgung Hittnau
pH	7.3	—	—	Mean · Wasserversorgung Hittnau
Sodium	6.25 mg/l	200 mg/l	3 %	Mean · Wasserversorgung Hittnau
Sulphate	3 mg/l	—	—	Mean · Wasserversorgung Hittnau
Temperature	11.5 °C	—	—	Mean · Wasserversorgung Hittnau

Further parameters (4)

Further parameters – Wasserversorgung Hittnau
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	101 mg/l	—	—	Mean · Wasserversorgung Hittnau
Magnesium	22.2 mg/l	—	—	Mean · Wasserversorgung Hittnau
Potassium	0.76 mg/l	—	—	Mean · Wasserversorgung Hittnau
Total hardness	34.3 °fH	—	—	Mean · Wasserversorgung Hittnau

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/1403/wasserversorgung-hittnau/3774/wasserversorgung-hittnau · 2025 · 2025 · retrieved on 07/08/2026

Postcodes in this zone: 8335

Frequently asked questions about drinking water in Hittnau

How hard is the water in Hittnau?: Wasserversorgung Hittnau publishes a total hardness of 34.3 °fH for the supply zone Wasserversorgung Hittnau — that corresponds to 19.2 °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: 2025, retrieved on 07/08/2026.
How much nitrate is in the drinking water in Hittnau?: Wasserversorgung Hittnau publishes a nitrate value of 7 mg/l for the supply zone Wasserversorgung Hittnau. 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 Hittnau?: Wasserversorgung Hittnau. The values shown here come from the supply zone Wasserversorgung Hittnau 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.