Drinking water in Uznach
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.
Uznach: Ernetschwilerstrasse bis Hegnerstrasse (obere Druckzone)
Wasserversorgung UznachAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 4 mg/l | 40 mg/l | 10 % | Mean · Uznach: Ernetschwilerstrasse bis Hegnerstrasse (obere Druckzone) |
| Escherichia coli (E. coli) | 0 KBE/100ml | 0/100 ml | — | Maximum · Median 0 · Uznach: Ernetschwilerstrasse bis Hegnerstrasse (obere Druckzone) |
Show all recorded parameters (7 — most recent value per parameter)
Microbiology (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aerobic mesophilic bacteria | 8 KBE/ml | 300 1/ml | — | Mean · Uznach: Ernetschwilerstrasse bis Hegnerstrasse (obere Druckzone) |
| Escherichia coli (E. coli) | 0 KBE/100ml | 0/100 ml | — | Maximum · Median 0 · Uznach: Ernetschwilerstrasse bis Hegnerstrasse (obere Druckzone) |
| Intestinal enterococci | 0 KBE/100ml | 0/100 ml | — | Maximum · Median 0 · Uznach: Ernetschwilerstrasse bis Hegnerstrasse (obere Druckzone) |
Chemical parameters (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 4 mg/l | 40 mg/l | 10 % | Mean · Uznach: Ernetschwilerstrasse bis Hegnerstrasse (obere Druckzone) |
Further parameters (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 68 mg/l | — | — | Mean · Uznach: Ernetschwilerstrasse bis Hegnerstrasse (obere Druckzone) |
| Magnesium | 15 mg/l | — | — | Mean · Uznach: Ernetschwilerstrasse bis Hegnerstrasse (obere Druckzone) |
| Total hardness | 23.3 °fH | — | — | Mean · Uznach: Ernetschwilerstrasse bis Hegnerstrasse (obere Druckzone) |
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: 8730
Show 1 more supply zone
Uznach: restliches Gemeindegebiet (untere Druckzone)
Wasserversorgung UznachAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 12.33 mg/l | 40 mg/l | 31 % | Mean · Uznach: restliches Gemeindegebiet (untere Druckzone) |
| Escherichia coli (E. coli) | 0 KBE/100ml | 0/100 ml | — | Maximum · Median 0 · Uznach: restliches Gemeindegebiet (untere Druckzone) |
Show all recorded parameters (7 — most recent value per parameter)
Microbiology (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aerobic mesophilic bacteria | 0 KBE/ml | 300 1/ml | — | Mean · Uznach: restliches Gemeindegebiet (untere Druckzone) |
| Escherichia coli (E. coli) | 0 KBE/100ml | 0/100 ml | — | Maximum · Median 0 · Uznach: restliches Gemeindegebiet (untere Druckzone) |
| Intestinal enterococci | 1 KBE/100ml | 0/100 ml | above the parametric value — this parameter must not be detectable | Maximum · Median 0 · Uznach: restliches Gemeindegebiet (untere Druckzone) |
An exceedance of a parametric value does not automatically mean a health risk; the statutory parametric values include safety margins. Assessment and any measures are the responsibility of the competent health authority of the respective country.
Chemical parameters (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 12.33 mg/l | 40 mg/l | 31 % | Mean · Uznach: restliches Gemeindegebiet (untere Druckzone) |
Further parameters (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 103 mg/l | — | — | Mean · Uznach: restliches Gemeindegebiet (untere Druckzone) |
| Magnesium | 17.3 mg/l | — | — | Mean · Uznach: restliches Gemeindegebiet (untere Druckzone) |
| Total hardness | 32.8 °fH | — | — | Mean · Uznach: restliches Gemeindegebiet (untere Druckzone) |
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: 8730
Frequently asked questions about drinking water in Uznach
- How hard is the water in Uznach?
- Wasserversorgung Uznach publishes a total hardness of 23.3 °fH for the supply zone Uznach: Ernetschwilerstrasse bis Hegnerstrasse (obere Druckzone) — that corresponds to 13 °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 Uznach?
- Wasserversorgung Uznach publishes a nitrate value of 4 mg/l for the supply zone Uznach: Ernetschwilerstrasse bis Hegnerstrasse (obere Druckzone). The statutory parametric value is 40 mg/l; the measured value represents 10 % of the parametric value. Basis: 2025, retrieved on 07/08/2026.
- Who supplies the drinking water in Uznach?
- Wasserversorgung Uznach. The values shown here come from the supply zone Uznach: Ernetschwilerstrasse bis Hegnerstrasse (obere Druckzone) 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.