Drinking water in Oftringen
One supply zone, water supplier: Wasserversorgung Oftringen.
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.
Oftringen
Wasserversorgung OftringenAssigned 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 | 18.55 mg/l | 40 mg/l | 46 % | Mean · Oftringen |
| Escherichia coli (E. coli) | 0 KBE/100ml | 0/100 ml | — | Maximum · Median 0 · Oftringen |
| Sulphate | 14.1 mg/l | — | — | Mean · Oftringen |
| Sodium | 12.75 mg/l | 200 mg/l | 6 % | Mean · Oftringen |
Show all recorded parameters (20 — most recent value per parameter)
Microbiology (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aerobic mesophilic bacteria | 9 KBE/ml | 300 1/ml | — | Mean · Oftringen |
| Escherichia coli (E. coli) | 0 KBE/100ml | 0/100 ml | — | Maximum · Median 0 · Oftringen |
| Intestinal enterococci | 0 KBE/100ml | 0/100 ml | — | Maximum · Median 0 · Oftringen |
Chemical parameters (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Fluoride | < 0.1 mg/l below limit of quantification | 1.5 mg/l | < 7 % * | Mean · Oftringen |
| Nitrate | 18.55 mg/l | 40 mg/l | 46 % | Mean · Oftringen |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
PFAS (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Perfluorohexane sulfonic acid (PFHxS) | 0.001 µg/l | 0.3 µg/l | 0.3 % | Mean · Oftringen |
| Perfluorooctanesulfonic acid (PFOS) | 0.003 µg/l | 0.3 µg/l | 1 % | Mean · Oftringen |
| Perfluorooctanoic acid (PFOA) | 0.001 µg/l | 0.5 µg/l | 0.2 % | Mean · Oftringen |
Metabolites (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Chlorothalonil metabolite R417888 | < 0.02 µg/l below limit of quantification | 0.1 µg/l | < 20 % * | Mean · Oftringen |
| Chlorothalonil metabolite R471811 | 0.11 µg/l | 0.1 µg/l | 110 % Mean above the parametric value | Mean · Oftringen |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Annual means and medians are not individual measured values, but the parametric values apply per sample. If a mean lies above it, at least one individual sample was above it — the mean does not say how many, or by how much. That is why this is not reported here as an exceedance of the parametric value. What counts remains the water supplier's publication, which each row links to.
Indicator parameters (6)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Chloride | 15.75 mg/l | — | — | Mean · Oftringen |
| Conductivity (25 °C) | 633 µS/cm | — | — | Mean · Oftringen |
| pH | 7.17 | — | — | Mean · Oftringen |
| Sodium | 12.75 mg/l | 200 mg/l | 6 % | Mean · Oftringen |
| Sulphate | 14.1 mg/l | — | — | Mean · Oftringen |
| Temperature | 12.15 °C | — | — | Mean · Oftringen |
Further parameters (4)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 100.55 mg/l | — | — | Mean · Oftringen |
| Magnesium | 12.4 mg/l | — | — | Mean · Oftringen |
| Potassium | 2.9 mg/l | — | — | Mean · Oftringen |
| Total hardness | 30.1 °fH | — | — | Mean · Oftringen |
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: 4665
Frequently asked questions about drinking water in Oftringen
- How hard is the water in Oftringen?
- Wasserversorgung Oftringen publishes a total hardness of 30.1 °fH for the supply zone Oftringen — that corresponds to 16.9 °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 Oftringen?
- Wasserversorgung Oftringen publishes a nitrate value of 18.55 mg/l for the supply zone Oftringen. The statutory parametric value is 40 mg/l; the measured value represents 46 % of the parametric value. Basis: 2025, retrieved on 07/08/2026.
- Who supplies the drinking water in Oftringen?
- Wasserversorgung Oftringen. The values shown here come from the supply zone Oftringen 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.