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Drinking water in Alle

The drinking water in Alle has a total hardness of 15.9 °dH. Nitrate reaches 12.6 mg/l, the statutory parametric value is 40 mg/l. Measured in supply zone Août of Commune d'Alle, retrieved on 12/08/2026.

2 supply zones — values can differ depending on the district. Below is the zone with the most documented parameters, the others collapsed underneath. To determine the exact match, look up the postcode.

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
15.9 °dH
Key values Août
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 12.6 mg/l 40 mg/l
32 %
Single value · Août 2025
Show all recorded parameters (7 — most recent value per parameter)

Chemical parameters (1)

Chemical parameters – Août
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 12.6 mg/l 40 mg/l
32 %
Single value · Août 2025

Indicator parameters (3)

Indicator parameters – Août
Parameter Value Parametric value Share of the parametric value Reference
pH 7.32 — — Single value · Août 2025
Temperature 14.6 ° — — Single value · Août 2025
Turbidity 0.26 FNU — — Single value · Août 2025

Further parameters (3)

Further parameters – Août
Parameter Value Parametric value Share of the parametric value Reference
Calcium 110 mg/l — — Single value · Août 2025
Magnesium 2.34 mg/l — — Single value · Août 2025
Total hardness 28.4 °f — — Single value · Août 2025

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://www.alle.ch/wp-content/uploads/2026/07/Flyer-eau-1.pdf · Édition, octobre 2025 · Février 2025 et Août 2025 · retrieved on 12/08/2026

Postcodes in this zone: 2942

Show 1 more supply zone

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

Water hardness
17.4 °dH
Key values Février
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 8.09 mg/l 40 mg/l
20 %
Single value · Février 2025
Show all recorded parameters (7 — most recent value per parameter)

Chemical parameters (1)

Chemical parameters – Février
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 8.09 mg/l 40 mg/l
20 %
Single value · Février 2025

Indicator parameters (3)

Indicator parameters – Février
Parameter Value Parametric value Share of the parametric value Reference
pH 7.86 — — Single value · Février 2025
Temperature 8.1 ° — — Single value · Février 2025
Turbidity 0.010 FNU — — Single value · Février 2025

Further parameters (3)

Further parameters – Février
Parameter Value Parametric value Share of the parametric value Reference
Calcium 122 mg/l — — Single value · Février 2025
Magnesium 1.89 mg/l — — Single value · Février 2025
Total hardness 31.1 °f — — Single value · Février 2025

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://www.alle.ch/wp-content/uploads/2026/07/Flyer-eau-1.pdf · Édition, octobre 2025 · Février 2025 et Août 2025 · retrieved on 12/08/2026

Postcodes in this zone: 2942

Frequently asked questions about drinking water in Alle

How hard is the water in Alle?
Commune d'Alle publishes a total hardness of 28.4 °f for the supply zone Août — that corresponds to 15.9 °dH. Hardness indicates how much calcium and magnesium are dissolved in the water. It is not a quality assessment: there is no parametric value for hardness. Basis: Édition, octobre 2025, retrieved on 12/08/2026.
How much nitrate is in the drinking water in Alle?
Commune d'Alle publishes a nitrate value of 12.6 mg/l for the supply zone Août. The statutory parametric value is 40 mg/l; the measured value represents 32 % of the parametric value. Basis: Édition, octobre 2025, retrieved on 12/08/2026.
Who supplies the drinking water in Alle?
Commune d'Alle. The values shown here come from the supply zone Août 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.