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Drinking water in Weesen

One supply zone, water supplier: Wasserversorgung Weesen.

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.

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

Water hardness
8.4 °dH
Hardness range medium
Key values Weesen
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 2 mg/l 40 mg/l
5 %
Mean · Weesen
Escherichia coli (E. coli) nn
not detectable
Unit not stated in the document
0/100 ml Maximum · Median nn · Weesen
Sulphate 2 mg/l Mean · Weesen
Sodium 1 mg/l 200 mg/l
0.5 %
Mean · Weesen
Show all recorded parameters (17 — most recent value per parameter)

Microbiology (3)

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

Chemical parameters (1)

Chemical parameters – Weesen
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 2 mg/l 40 mg/l
5 %
Mean · Weesen

Indicator parameters (7)

Indicator parameters – Weesen
Parameter Value Parametric value Share of the parametric value Reference
Chloride 1 mg/l Mean · Weesen
Conductivity (25 °C) 280 µS/cm Mean · Weesen
pH 8 Mean · Weesen
Sodium 1 mg/l 200 mg/l
0.5 %
Mean · Weesen
Sulphate 2 mg/l Mean · Weesen
Temperature 9 °C Mean · Weesen
Turbidity 0.1 TE/F Mean · Weesen

Further parameters (6)

Further parameters – Weesen
Parameter Value Parametric value Share of the parametric value Reference
Calcium 60 mg/l Mean · Weesen
Hydrogen carbonate 19 mg/l Mean · Weesen
Magnesium 7 mg/l Mean · Weesen
Potassium 1 mg/l Mean · Weesen
Spectral absorption coefficient 254 nm (SAC 254) 0.77 1/m Mean · Weesen
Total hardness 15 °fH Mean · Weesen

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/808/wasserversorgung-weesen/2646/weesen · 2025 · 2025 · retrieved on 07/08/2026

Postcodes in this zone: 8872

Frequently asked questions about drinking water in Weesen

How hard is the water in Weesen?
Wasserversorgung Weesen publishes a total hardness of 15 °fH for the supply zone Weesen — that corresponds to 8.4 °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 Weesen?
Wasserversorgung Weesen publishes a nitrate value of 2 mg/l for the supply zone Weesen. The statutory parametric value is 40 mg/l; the measured value represents 5 % of the parametric value. Basis: 2025, retrieved on 07/08/2026.
Who supplies the drinking water in Weesen?
Wasserversorgung Weesen. The values shown here come from the supply zone Weesen 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.