Drinking water in Wilderswil
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
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.
3812, Groß-Siegharts
EVN Wasser GesmbH| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 14 mg/l | 50 mg/l | 28 % | Single value · 3812, Groß-Siegharts |
| Sulphate | 58 mg/l | 250 mg/l | 23 % | Single value · 3812, Groß-Siegharts |
| Sodium | 16,6 mg/l | 200 mg/l | 8 % | Single value · 3812, Groß-Siegharts |
Show all recorded parameters (11 — most recent value per parameter)
Chemical parameters (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 14 mg/l | 50 mg/l | 28 % | Single value · 3812, Groß-Siegharts |
| Pesticides | < 0,1 µg/l below limit of quantification | 0.1 µg/l | cannot be assessed — the limit of quantification of the measurement is above the parametric value | Single value · 3812, Groß-Siegharts |
Indicator parameters (4)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Chloride | 37 mg/l | 200 mg/l | 18 % | Single value · 3812, Groß-Siegharts |
| pH | 7,6 | 6,5–9,5 | — | Single value · 3812, Groß-Siegharts |
| Sodium | 16,6 mg/l | 200 mg/l | 8 % | Single value · 3812, Groß-Siegharts |
| Sulphate | 58 mg/l | 250 mg/l | 23 % | Single value · 3812, Groß-Siegharts |
Further parameters (5)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 70,4 mg/l | 400 mg/l | 18 % | Single value · 3812, Groß-Siegharts |
| Carbonate hardness | 12,1 °dH | — | — | Single value · 3812, Groß-Siegharts |
| Magnesium | 25,4 mg/l | 150 mg/l | 17 % | Single value · 3812, Groß-Siegharts |
| Potassium | 3,6 mg/l | 50 mg/l | 7 % | Single value · 3812, Groß-Siegharts |
| Total hardness | 15,7 °dH | — | — | Single value · 3812, Groß-Siegharts |
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.
Postcodes in this zone: 3812
Show 1 more supply zone
3812, Sieghartsles
EVN Wasser GesmbH| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 14 mg/l | 50 mg/l | 28 % | Single value · 3812, Sieghartsles |
| Sulphate | 58 mg/l | 250 mg/l | 23 % | Single value · 3812, Sieghartsles |
| Sodium | 16,6 mg/l | 200 mg/l | 8 % | Single value · 3812, Sieghartsles |
Show all recorded parameters (11 — most recent value per parameter)
Chemical parameters (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 14 mg/l | 50 mg/l | 28 % | Single value · 3812, Sieghartsles |
| Pesticides | < 0,1 µg/l below limit of quantification | 0.1 µg/l | cannot be assessed — the limit of quantification of the measurement is above the parametric value | Single value · 3812, Sieghartsles |
Indicator parameters (4)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Chloride | 37 mg/l | 200 mg/l | 18 % | Single value · 3812, Sieghartsles |
| pH | 7,6 | 6,5–9,5 | — | Single value · 3812, Sieghartsles |
| Sodium | 16,6 mg/l | 200 mg/l | 8 % | Single value · 3812, Sieghartsles |
| Sulphate | 58 mg/l | 250 mg/l | 23 % | Single value · 3812, Sieghartsles |
Further parameters (5)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 70,4 mg/l | 400 mg/l | 18 % | Single value · 3812, Sieghartsles |
| Carbonate hardness | 12,1 °dH | — | — | Single value · 3812, Sieghartsles |
| Magnesium | 25,4 mg/l | 150 mg/l | 17 % | Single value · 3812, Sieghartsles |
| Potassium | 3,6 mg/l | 50 mg/l | 7 % | Single value · 3812, Sieghartsles |
| Total hardness | 15,7 °dH | — | — | Single value · 3812, Sieghartsles |
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.
Postcodes in this zone: 3812
Frequently asked questions about drinking water in Wilderswil
- How hard is the water in Wilderswil?
- EVN Wasser GesmbH publishes a total hardness of 15.7 °dH for the supply zone 3812, Groß-Siegharts (hardness range hard). 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: 2026-02-11, retrieved on 08/07/2026.
- How much nitrate is in the drinking water in Wilderswil?
- EVN Wasser GesmbH publishes a nitrate value of 14 mg/l for the supply zone 3812, Groß-Siegharts. The statutory parametric value is 50 mg/l; the measured value represents 28 % of the parametric value. Basis: 2026-02-11, retrieved on 08/07/2026.
- Who supplies the drinking water in Wilderswil?
- EVN Wasser GesmbH. The values shown here come from the supply zone 3812, Groß-Siegharts 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.