How hard is the water in Niederweningen?

Niederweningen publishes a total hardness of 29.3 °fH for the supply zone Niederweningen — that corresponds to 16.4 °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 Niederweningen?

Niederweningen publishes a nitrate value of 16.3 mg/l for the supply zone Niederweningen. The statutory parametric value is 40 mg/l; the measured value represents 41 % of the parametric value. Basis: 2025, retrieved on 07/08/2026.

Who supplies the drinking water in Niederweningen?

Niederweningen. The values shown here come from the supply zone Niederweningen 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 Niederweningen

One supply zone, water supplier: Niederweningen.

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.

Niederweningen

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

Water hardness

16.4 °dH

Hardness range hard

Key values Niederweningen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	16.3 mg/l	40 mg/l	41 %	Mean · Niederweningen
Escherichia coli (E. coli)	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Niederweningen
Sulphate	12.3 mg/l	—	—	Mean · Niederweningen
Sodium	5.4 mg/l	200 mg/l	3 %	Mean · Niederweningen

Show all recorded parameters (16 — most recent value per parameter)

Microbiology (3)

Microbiology – Niederweningen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aerobic mesophilic bacteria	61 KBE/ml	300 1/ml	—	Mean · Niederweningen
Escherichia coli (E. coli)	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Niederweningen
Intestinal enterococci	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Niederweningen

Chemical parameters (2)

Chemical parameters – Niederweningen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Fluoride	0.1 mg/l	1.5 mg/l	7 %	Mean · Niederweningen
Nitrate	16.3 mg/l	40 mg/l	41 %	Mean · Niederweningen

Metabolites (1)

Metabolites – Niederweningen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chlorothalonil metabolite R471811	0.166 µg/l	0.1 µg/l	166 % Mean above the parametric value	Mean · Niederweningen

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 (6)

Indicator parameters – Niederweningen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	8.4 mg/l	—	—	Mean · Niederweningen
Conductivity (25 °C)	594 µS/cm	—	—	Mean · Niederweningen
pH	7.4	—	—	Mean · Niederweningen
Sodium	5.4 mg/l	200 mg/l	3 %	Mean · Niederweningen
Sulphate	12.3 mg/l	—	—	Mean · Niederweningen
Temperature	15.6 °C	—	—	Mean · Niederweningen

Further parameters (4)

Further parameters – Niederweningen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	99.7 mg/l	—	—	Mean · Niederweningen
Magnesium	13.1 mg/l	—	—	Mean · Niederweningen
Potassium	0.85 mg/l	—	—	Mean · Niederweningen
Total hardness	29.3 °fH	—	—	Mean · Niederweningen

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/886/niederweningen/3403/niederweningen · 2025 · 2025 · retrieved on 07/08/2026

Postcodes in this zone: 8166

Frequently asked questions about drinking water in Niederweningen

How hard is the water in Niederweningen?: Niederweningen publishes a total hardness of 29.3 °fH for the supply zone Niederweningen — that corresponds to 16.4 °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 Niederweningen?: Niederweningen publishes a nitrate value of 16.3 mg/l for the supply zone Niederweningen. The statutory parametric value is 40 mg/l; the measured value represents 41 % of the parametric value. Basis: 2025, retrieved on 07/08/2026.
Who supplies the drinking water in Niederweningen?: Niederweningen. The values shown here come from the supply zone Niederweningen 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.