Drinking water in Bözen
One supply zone, water supplier: Gemeinde Böztal.
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.
Bözen, Effingen, Elfingen, Hornussen
Gemeinde BöztalAssigned 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 | 20 mg/l | 40 mg/l | 50 % | Mean · Bözen, Effingen, Elfingen, Hornussen |
| Escherichia coli (E. coli) | 1 KBE/100ml | 0/100 ml | above the parametric value — this parameter must not be detectable | Maximum · Median 1 · Bözen, Effingen, Elfingen, Hornussen |
| Sulphate | 27 mg/l | — | — | Mean · Bözen, Effingen, Elfingen, Hornussen |
| Sodium | 17.6 mg/l | 200 mg/l | 9 % | Mean · Bözen, Effingen, Elfingen, Hornussen |
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 (17 — most recent value per parameter)
Microbiology (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aerobic mesophilic bacteria | 15 KBE/ml | 300 1/ml | — | Mean · Bözen, Effingen, Elfingen, Hornussen |
| Escherichia coli (E. coli) | 1 KBE/100ml | 0/100 ml | above the parametric value — this parameter must not be detectable | Maximum · Median 1 · Bözen, Effingen, Elfingen, Hornussen |
| Intestinal enterococci | 0 KBE/100ml | 0/100 ml | — | Maximum · Median 0 · Bözen, Effingen, Elfingen, Hornussen |
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 | 20 mg/l | 40 mg/l | 50 % | Mean · Bözen, Effingen, Elfingen, Hornussen |
PFAS (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Perfluorohexane sulfonic acid (PFHxS) | 0.0021 µg/l | 0.3 µg/l | 0.7 % | Mean · Bözen, Effingen, Elfingen, Hornussen |
| Perfluorooctanesulfonic acid (PFOS) | 0.0033 µg/l | 0.3 µg/l | 1 % | Mean · Bözen, Effingen, Elfingen, Hornussen |
| Perfluorooctanoic acid (PFOA) | 0.0015 µg/l | 0.5 µg/l | 0.3 % | Mean · Bözen, Effingen, Elfingen, Hornussen |
Metabolites (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Chlorothalonil metabolite R471811 | 0.055 µg/l | 0.1 µg/l | 55 % | Mean · Bözen, Effingen, Elfingen, Hornussen |
Indicator parameters (5)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Chloride | 22 mg/l | — | — | Mean · Bözen, Effingen, Elfingen, Hornussen |
| Conductivity (25 °C) | 708 µS/cm | — | — | Mean · Bözen, Effingen, Elfingen, Hornussen |
| Sodium | 17.6 mg/l | 200 mg/l | 9 % | Mean · Bözen, Effingen, Elfingen, Hornussen |
| Sulphate | 27 mg/l | — | — | Mean · Bözen, Effingen, Elfingen, Hornussen |
| Temperature | 13 °C | — | — | Mean · Bözen, Effingen, Elfingen, Hornussen |
Further parameters (4)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 124 mg/l | — | — | Mean · Bözen, Effingen, Elfingen, Hornussen |
| Magnesium | 5.6 mg/l | — | — | Mean · Bözen, Effingen, Elfingen, Hornussen |
| Potassium | 3.3 mg/l | — | — | Mean · Bözen, Effingen, Elfingen, Hornussen |
| Total hardness | 33 °fH | — | — | Mean · Bözen, Effingen, Elfingen, Hornussen |
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: 5076
Frequently asked questions about drinking water in Bözen
- How hard is the water in Bözen?
- Gemeinde Böztal publishes a total hardness of 33 °fH for the supply zone Bözen, Effingen, Elfingen, Hornussen — that corresponds to 18.5 °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: 2026, retrieved on 07/08/2026.
- How much nitrate is in the drinking water in Bözen?
- Gemeinde Böztal publishes a nitrate value of 20 mg/l for the supply zone Bözen, Effingen, Elfingen, Hornussen. The statutory parametric value is 40 mg/l; the measured value represents 50 % of the parametric value. Basis: 2026, retrieved on 07/08/2026.
- Who supplies the drinking water in Bözen?
- Gemeinde Böztal. The values shown here come from the supply zone Bözen, Effingen, Elfingen, Hornussen 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.