Drinking water in Castel San Pietro
One supply zone, water supplier: Castel San Pietro.
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.
Castel San Pietro
Castel San PietroAssigned 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 | 4.6 mg/l | 40 mg/l | 12 % | Mean · Castel San Pietro |
| Escherichia coli (E. coli) | 0 KBE/100ml | 0/100 ml | — | Maximum · Median 0 · Castel San Pietro |
| Sulphate | 37 mg/l | — | — | Mean · Castel San Pietro |
| Sodium | 1.2 mg/l | 200 mg/l | 0.6 % | Mean · Castel San Pietro |
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 | 0 KBE/ml | 300 1/ml | — | Mean · Castel San Pietro |
| Escherichia coli (E. coli) | 0 KBE/100ml | 0/100 ml | — | Maximum · Median 0 · Castel San Pietro |
| Intestinal enterococci | 0 KBE/100ml | 0/100 ml | — | Maximum · Median 0 · Castel San Pietro |
Chemical parameters (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Fluoride | 0.2 mg/l | 1.5 mg/l | 13 % | Mean · Castel San Pietro |
| Nitrate | 4.6 mg/l | 40 mg/l | 12 % | Mean · Castel San Pietro |
Indicator parameters (9)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Chloride | 8.8 mg/l | — | — | Mean · Castel San Pietro |
| Conductivity (25 °C) | 337 µS/cm | — | — | Mean · Castel San Pietro |
| Iron | 0.17 mg/l | 0.2 mg/l | 85 % | Mean · Castel San Pietro |
| Manganese | 0.01 mg/l | 50 µg/l | 20 % | Mean · Castel San Pietro |
| pH | 8.05 | — | — | Mean · Castel San Pietro |
| Sodium | 1.2 mg/l | 200 mg/l | 0.6 % | Mean · Castel San Pietro |
| Sulphate | 37 mg/l | — | — | Mean · Castel San Pietro |
| Temperature | 12.5 °C | — | — | Mean · Castel San Pietro |
| Turbidity | 0.5 TE/F | — | — | Mean · Castel San Pietro |
Further parameters (6)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 56.4 mg/l | — | — | Mean · Castel San Pietro |
| Dissolved organic carbon (DOC) | 0.7 mg/l | — | — | Mean · Castel San Pietro |
| Hydrogen carbonate | 192 mg/l | — | — | Mean · Castel San Pietro |
| Magnesium | 8.5 mg/l | — | — | Mean · Castel San Pietro |
| Potassium | 0.4 mg/l | — | — | Mean · Castel San Pietro |
| Total hardness | 17.4 °fH | — | — | Mean · Castel San Pietro |
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: 6874
Frequently asked questions about drinking water in Castel San Pietro
- How hard is the water in Castel San Pietro?
- Castel San Pietro publishes a total hardness of 17.4 °fH for the supply zone Castel San Pietro — that corresponds to 9.7 °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 Castel San Pietro?
- Castel San Pietro publishes a nitrate value of 4.6 mg/l for the supply zone Castel San Pietro. The statutory parametric value is 40 mg/l; the measured value represents 12 % of the parametric value. Basis: 2021, retrieved on 07/08/2026.
- Who supplies the drinking water in Castel San Pietro?
- Castel San Pietro. The values shown here come from the supply zone Castel San Pietro 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.