Drinking water in Dettighofen (Lengwil), Illighausen, Lengwil u.a.
One supply zone, water supplier: Wasserversorgung Lengwil.
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.
Gebiet der Politischen Gemeinde Lengwil
Wasserversorgung LengwilAssigned 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 31/12/2021. 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 | 3.6 mg/l | 40 mg/l | 9 % | Mean · Gebiet der Politischen Gemeinde Lengwil |
| Escherichia coli (E. coli) | 0 KBE/100ml | 0/100 ml | — | Maximum · Median 0 · Gebiet der Politischen Gemeinde Lengwil |
| Sulphate | 31.3 mg/l | — | — | Mean · Gebiet der Politischen Gemeinde Lengwil |
| Sodium | 5.7 mg/l | 200 mg/l | 3 % | Mean · Gebiet der Politischen Gemeinde Lengwil |
Show all recorded parameters (22 — most recent value per parameter)
Microbiology (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aerobic mesophilic bacteria | 41 KBE/ml | 300 1/ml | — | Mean · Gebiet der Politischen Gemeinde Lengwil |
| Escherichia coli (E. coli) | 0 KBE/100ml | 0/100 ml | — | Maximum · Median 0 · Gebiet der Politischen Gemeinde Lengwil |
| Intestinal enterococci | 0 KBE/100ml | 0/100 ml | — | Maximum · Median 0 · Gebiet der Politischen Gemeinde Lengwil |
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 · Gebiet der Politischen Gemeinde Lengwil |
| Nitrate | 3.6 mg/l | 40 mg/l | 9 % | Mean · Gebiet der Politischen Gemeinde Lengwil |
* 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.
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 · Gebiet der Politischen Gemeinde Lengwil |
| Chlorothalonil metabolite R471811 | < 0.02 µg/l below limit of quantification | 0.1 µg/l | < 20 % * | Mean · Gebiet der Politischen Gemeinde Lengwil |
* 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.
Indicator parameters (10)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Chloride | 5.7 mg/l | — | — | Mean · Gebiet der Politischen Gemeinde Lengwil |
| Conductivity (25 °C) | 318 µS/cm | — | — | Mean · Gebiet der Politischen Gemeinde Lengwil |
| Iron | 0.007 mg/l | 0.2 mg/l | 3 % | Mean · Gebiet der Politischen Gemeinde Lengwil |
| Manganese | 0.007 mg/l | 50 µg/l | 14 % | Mean · Gebiet der Politischen Gemeinde Lengwil |
| Oxidisability | 10.7 mg KMnO4/l | — | — | Mean · Gebiet der Politischen Gemeinde Lengwil |
| pH | 7.7 | — | — | Mean · Gebiet der Politischen Gemeinde Lengwil |
| Sodium | 5.7 mg/l | 200 mg/l | 3 % | Mean · Gebiet der Politischen Gemeinde Lengwil |
| Sulphate | 31.3 mg/l | — | — | Mean · Gebiet der Politischen Gemeinde Lengwil |
| Temperature | 12 °C | — | — | Mean · Gebiet der Politischen Gemeinde Lengwil |
| Turbidity | < 0.1 TE/F below limit of quantification | — | — | Mean · Gebiet der Politischen Gemeinde Lengwil |
Further parameters (5)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 49 mg/l | — | — | Mean · Gebiet der Politischen Gemeinde Lengwil |
| Dissolved organic carbon (DOC) | 1 mg/l | — | — | Mean · Gebiet der Politischen Gemeinde Lengwil |
| Magnesium | 8.4 mg/l | — | — | Mean · Gebiet der Politischen Gemeinde Lengwil |
| Potassium | 1.5 mg/l | — | — | Mean · Gebiet der Politischen Gemeinde Lengwil |
| Total hardness | 15.7 °fH | — | — | Mean · Gebiet der Politischen Gemeinde Lengwil |
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: 8574
Frequently asked questions about drinking water in Dettighofen (Lengwil), Illighausen, Lengwil u.a.
- How hard is the water in Dettighofen (Lengwil), Illighausen, Lengwil u.a.?
- Wasserversorgung Lengwil publishes a total hardness of 15.7 °fH for the supply zone Gebiet der Politischen Gemeinde Lengwil — that corresponds to 8.8 °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: 2021, retrieved on 07/08/2026.
- How much nitrate is in the drinking water in Dettighofen (Lengwil), Illighausen, Lengwil u.a.?
- Wasserversorgung Lengwil publishes a nitrate value of 3.6 mg/l for the supply zone Gebiet der Politischen Gemeinde Lengwil. The statutory parametric value is 40 mg/l; the measured value represents 9 % of the parametric value. Basis: 2021, retrieved on 07/08/2026.
- Who supplies the drinking water in Dettighofen (Lengwil), Illighausen, Lengwil u.a.?
- Wasserversorgung Lengwil. The values shown here come from the supply zone Gebiet der Politischen Gemeinde Lengwil 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.