Drinking water in Seltisberg
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.
Wasserversorgung Oberdorf
Tschudin Haustechnik AGAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
These values are more than a year old. The most recent analysis the water supplier has published for this zone dates from 31/12/2022. We have no newer values — which is why we show the latest available ones rather than none at all. They say nothing about how the water has changed since then.
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 10 mg/l | 40 mg/l | 25 % | Mean · Wasserversorgung Oberdorf |
| Escherichia coli (E. coli) | 0 KBE/100ml | 0/100 ml | — | Maximum · Median 0 · Wasserversorgung Oberdorf |
| Sulphate | 156 mg/l | — | — | Mean · Wasserversorgung Oberdorf |
Show all recorded parameters (13 — most recent value per parameter)
Microbiology (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aerobic mesophilic bacteria | 67 KBE/ml | 300 1/ml | — | Mean · Wasserversorgung Oberdorf |
| Escherichia coli (E. coli) | 0 KBE/100ml | 0/100 ml | — | Maximum · Median 0 · Wasserversorgung Oberdorf |
| Intestinal enterococci | 0 KBE/100ml | 0/100 ml | — | Maximum · Median 1 · Wasserversorgung Oberdorf |
Chemical parameters (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Fluoride | 0.72 mg/l | 1.5 mg/l | 48 % | Mean · Wasserversorgung Oberdorf |
| Nitrate | 10 mg/l | 40 mg/l | 25 % | Mean · Wasserversorgung Oberdorf |
Indicator parameters (5)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Chloride | 8.68 mg/l | — | — | Mean · Wasserversorgung Oberdorf |
| Conductivity (25 °C) | 920 µS/cm | — | — | Mean · Wasserversorgung Oberdorf |
| pH | 7.26 | — | — | Mean · Wasserversorgung Oberdorf |
| Sulphate | 156 mg/l | — | — | Mean · Wasserversorgung Oberdorf |
| Temperature | 10 °C | — | — | Mean · Wasserversorgung Oberdorf |
Further parameters (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 130 mg/l | — | — | Mean · Wasserversorgung Oberdorf |
| Magnesium | 32.4 mg/l | — | — | Mean · Wasserversorgung Oberdorf |
| Total hardness | 45.7 °fH | — | — | Mean · Wasserversorgung Oberdorf |
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: 4411
Show 1 more supply zone
Wasserversorgung Seltisberg BL
Tschudin Haustechnik AGAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
These values are more than a year old. The most recent analysis the water supplier has published for this zone dates from 31/12/2022. We have no newer values — which is why we show the latest available ones rather than none at all. They say nothing about how the water has changed since then.
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 0 mg/l | 40 mg/l | 0 % | Mean · Wasserversorgung Seltisberg BL |
| Escherichia coli (E. coli) | 1 KBE/100ml | 0/100 ml | above the parametric value — this parameter must not be detectable | Maximum · Median 0 · Wasserversorgung Seltisberg BL |
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.
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 | 40 KBE/ml | 300 1/ml | — | Mean · Wasserversorgung Seltisberg BL |
| Escherichia coli (E. coli) | 1 KBE/100ml | 0/100 ml | above the parametric value — this parameter must not be detectable | Maximum · Median 0 · Wasserversorgung Seltisberg BL |
| Intestinal enterococci | 1 KBE/100ml | 0/100 ml | above the parametric value — this parameter must not be detectable | Maximum · Median 0 · Wasserversorgung Seltisberg BL |
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 | 0 mg/l | 40 mg/l | 0 % | Mean · Wasserversorgung Seltisberg BL |
Further parameters (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 0 mg/l | — | — | Mean · Wasserversorgung Seltisberg BL |
| Magnesium | 0 mg/l | — | — | Mean · Wasserversorgung Seltisberg BL |
| Total hardness | 32.6 °fH | — | — | Mean · Wasserversorgung Seltisberg BL |
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: 4411
Frequently asked questions about drinking water in Seltisberg
- How hard is the water in Seltisberg?
- Tschudin Haustechnik AG publishes a total hardness of 45.7 °fH for the supply zone Wasserversorgung Oberdorf — that corresponds to 25.6 °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: 2022, retrieved on 07/08/2026.
- How much nitrate is in the drinking water in Seltisberg?
- Tschudin Haustechnik AG publishes a nitrate value of 10 mg/l for the supply zone Wasserversorgung Oberdorf. The statutory parametric value is 40 mg/l; the measured value represents 25 % of the parametric value. Basis: 2022, retrieved on 07/08/2026.
- Who supplies the drinking water in Seltisberg?
- Tschudin Haustechnik AG. The values shown here come from the supply zone Wasserversorgung Oberdorf 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.