How hard is the water in Pfaffnau?

Wasserversorgung Pfaffnau publishes a total hardness of 31 °fH for the supply zone Pfaffnau — that corresponds to 17.4 °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: 2026, retrieved on 07/08/2026.

How much nitrate is in the drinking water in Pfaffnau?

Wasserversorgung Pfaffnau publishes a nitrate value of 26.3 mg/l for the supply zone Pfaffnau. The statutory parametric value is 40 mg/l; the measured value represents 66 % of the parametric value. Basis: 2026, retrieved on 07/08/2026.

Who supplies the drinking water in Pfaffnau?

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

One supply zone, water supplier: Wasserversorgung Pfaffnau.

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.

Pfaffnau

Wasserversorgung Pfaffnau

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

Water hardness

17.4 °dH

Hardness range hard

Key values Pfaffnau
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	26.3 mg/l	40 mg/l	66 %	Mean · Pfaffnau
Escherichia coli (E. coli)	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Pfaffnau
Sulphate	12 mg/l	—	—	Mean · Pfaffnau
Sodium	4.9 mg/l	200 mg/l	2 %	Mean · Pfaffnau

Show all recorded parameters (17 — most recent value per parameter)

Microbiology (3)

Microbiology – Pfaffnau
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aerobic mesophilic bacteria	4 KBE/ml	300 1/ml	—	Mean · Pfaffnau
Escherichia coli (E. coli)	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Pfaffnau
Intestinal enterococci	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Pfaffnau

Chemical parameters (1)

Chemical parameters – Pfaffnau
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	26.3 mg/l	40 mg/l	66 %	Mean · Pfaffnau

Metabolites (2)

Metabolites – Pfaffnau
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chlorothalonil metabolite R417888	< 0.01 µg/l below limit of quantification	0.1 µg/l	< 10 % *	Mean · Pfaffnau
Chlorothalonil metabolite R471811	0.015 µg/l	0.1 µg/l	15 %	Mean · Pfaffnau

* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.

Indicator parameters (7)

Indicator parameters – Pfaffnau
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	6.5 mg/l	—	—	Mean · Pfaffnau
Conductivity (25 °C)	588.5 µS/cm	—	—	Mean · Pfaffnau
pH	7.6	—	—	Mean · Pfaffnau
Sodium	4.9 mg/l	200 mg/l	2 %	Mean · Pfaffnau
Sulphate	12 mg/l	—	—	Mean · Pfaffnau
Temperature	8.9 °C	—	—	Mean · Pfaffnau
Turbidity	0.02 TE/F	—	—	Mean · Pfaffnau

Further parameters (4)

Further parameters – Pfaffnau
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	90.35 mg/l	—	—	Mean · Pfaffnau
Magnesium	20.4 mg/l	—	—	Mean · Pfaffnau
Potassium	0.75 mg/l	—	—	Mean · Pfaffnau
Total hardness	31 °fH	—	—	Mean · Pfaffnau

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/1532/wasserversorgung-pfaffnau/3701/pfaffnau · 2026 · 2026 · retrieved on 07/08/2026

Postcodes in this zone: 6264

Frequently asked questions about drinking water in Pfaffnau

How hard is the water in Pfaffnau?: Wasserversorgung Pfaffnau publishes a total hardness of 31 °fH for the supply zone Pfaffnau — that corresponds to 17.4 °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: 2026, retrieved on 07/08/2026.
How much nitrate is in the drinking water in Pfaffnau?: Wasserversorgung Pfaffnau publishes a nitrate value of 26.3 mg/l for the supply zone Pfaffnau. The statutory parametric value is 40 mg/l; the measured value represents 66 % of the parametric value. Basis: 2026, retrieved on 07/08/2026.
Who supplies the drinking water in Pfaffnau?: Wasserversorgung Pfaffnau. The values shown here come from the supply zone Pfaffnau 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.