How hard is the water in Fribourg?

SINEF SA publishes a total hardness of 28 °fH for the supply zone Fribourg — that corresponds to 15.7 °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 Fribourg?

SINEF SA publishes a nitrate value of 9 mg/l for the supply zone Fribourg. The statutory parametric value is 40 mg/l; the measured value represents 23 % of the parametric value. Basis: 2025, retrieved on 07/08/2026.

Who supplies the drinking water in Fribourg?

SINEF SA. The values shown here come from the supply zone Fribourg 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 Fribourg

One supply zone, water supplier: SINEF SA.

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.

Fribourg

SINEF SA

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

Water hardness

15.7 °dH

Hardness range hard

Key values Fribourg
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	9 mg/l	40 mg/l	23 %	Mean · Fribourg
Escherichia coli (E. coli)	0 KBE/100ml	0/100 ml	—	Maximum · Median 0 · Fribourg
Sulphate	14 mg/l	—	—	Mean · Fribourg
Sodium	7 mg/l	200 mg/l	3 %	Mean · Fribourg

Show all recorded parameters (20 — most recent value per parameter)

Microbiology (3)

Microbiology – Fribourg
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aerobic mesophilic bacteria	6 KBE/ml	300 1/ml	—	Mean · Fribourg
Escherichia coli (E. coli)	0 KBE/100ml	0/100 ml	—	Maximum · Median 0 · Fribourg
Intestinal enterococci	0 KBE/100ml	0/100 ml	—	Maximum · Median 0 · Fribourg

Chemical parameters (1)

Chemical parameters – Fribourg
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	9 mg/l	40 mg/l	23 %	Mean · Fribourg

PFAS (3)

PFAS – Fribourg
Parameter	Parametric value	Reference
Perfluorohexane sulfonic acid (PFHxS)	0.3 µg/l	Mean · Fribourg
Perfluorooctanesulfonic acid (PFOS)	0.3 µg/l	Mean · Fribourg
Perfluorooctanoic acid (PFOA)	0.5 µg/l	Mean · Fribourg

Metabolites (2)

Metabolites – Fribourg
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chlorothalonil metabolite R417888	0 µg/l	0.1 µg/l	0 %	Mean · Fribourg
Chlorothalonil metabolite R471811	0.045 µg/l	0.1 µg/l	45 %	Mean · Fribourg

Indicator parameters (7)

Indicator parameters – Fribourg
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	11 mg/l	—	—	Mean · Fribourg
Conductivity (25 °C)	497 µS/cm	—	—	Mean · Fribourg
Iron	0 mg/l	0.2 mg/l	0 %	Mean · Fribourg
Manganese	0 mg/l	50 µg/l	0 %	Mean · Fribourg
Sodium	7 mg/l	200 mg/l	3 %	Mean · Fribourg
Sulphate	14 mg/l	—	—	Mean · Fribourg
Turbidity	0.12 TE/F	—	—	Mean · Fribourg

Further parameters (4)

Further parameters – Fribourg
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	85 mg/l	—	—	Mean · Fribourg
Magnesium	18 mg/l	—	—	Mean · Fribourg
Potassium	1 mg/l	—	—	Mean · Fribourg
Total hardness	28 °fH	—	—	Mean · Fribourg

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/1042/sinef-sa/3598/fribourg · 2025 · 2025 · retrieved on 07/08/2026

Postcodes in this zone: 1700

Frequently asked questions about drinking water in Fribourg

How hard is the water in Fribourg?: SINEF SA publishes a total hardness of 28 °fH for the supply zone Fribourg — that corresponds to 15.7 °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 Fribourg?: SINEF SA publishes a nitrate value of 9 mg/l for the supply zone Fribourg. The statutory parametric value is 40 mg/l; the measured value represents 23 % of the parametric value. Basis: 2025, retrieved on 07/08/2026.
Who supplies the drinking water in Fribourg?: SINEF SA. The values shown here come from the supply zone Fribourg 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.