Italy · Comune
Drinking water in Valganna
One supply zone, published by ALFA S.r.l.. The values come from the publications of the Italian water suppliers (gestori), which D.Lgs. 18/2023 requires of them from 12 January 2026. Italian parametric values apply: trihalomethanes 30 instead of 50 µg/l, chromium 25 µg/l, uranium 30 instead of 10 µg/l; for hardness there is no maximum value, it is given in French degrees (°F).
Comune di Valganna
ALFA S.r.l.| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 4 mg/l | 50 mg/l | 8 % | Median · Comune di Valganna · Source [1] |
| Lead | < 1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Maximum · Comune di Valganna · Source [1] |
| Escherichia coli (E. coli) | 0 UFC/100ml | 0/100 ml | — | Maximum · Median 0 · Comune di Valganna · Source [1] |
| Sulphate | 4 mg/l | 250 mg/l | 2 % | Median · Comune di Valganna · Source [1] |
| Sodium | 3 mg/l | 200 mg/l | 2 % | Median · Comune di Valganna · Source [1] |
* 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.
Show all recorded parameters (57 — most recent value per parameter)
Microbiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 UFC/100ml | 0/100 ml | — | Maximum · Median 0 · Comune di Valganna · Source [1] |
| Intestinal enterococci | 0 UFC/100ml | 0/100 ml | — | Maximum · Median 0 · Comune di Valganna · Source [1] |
Chemical parameters (31)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | < 0,9 µg/l below limit of quantification | 3 µg/l | < 30 % * | Maximum · Comune di Valganna · Source [1] |
| Alachlor | < 0,01 µg/l below limit of quantification | — | — | Maximum · Comune di Valganna · Source [1] |
| Antimony | < 1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Maximum · Comune di Valganna · Source [1] |
| Arsenic | 1 µg/l | 10 µg/l | 10 % | Median · Comune di Valganna · Source [1] |
| Atrazine | < 0,01 µg/l below limit of quantification | — | — | Maximum · Comune di Valganna · Source [1] |
| Bentazone | < 0,01 µg/l below limit of quantification | — | — | Maximum · Comune di Valganna · Source [1] |
| Benzene | < 0,3 µg/l below limit of quantification | 1 µg/l | < 30 % * | Maximum · Comune di Valganna · Source [1] |
| Boron | < 0,3 mg/l below limit of quantification | 1.5 mg/l | < 20 % * | Maximum · Comune di Valganna · Source [1] |
| Bromodichloromethane | 1 µg/l | — | — | Median · Comune di Valganna · Source [1] |
| Cadmium | < 1,0 µg/l below limit of quantification | 5 µg/l | < 20 % * | Maximum · Comune di Valganna · Source [1] |
| Chlorate | 0,11 mg/l | 0,25 — bzw. 0,70 bei Desinfektion mit Chlordioxid | — | Median · Comune di Valganna · Source [2] |
| Chlorite | < 0,05 mg/l below limit of quantification | 0,25 — bzw. 0,70 bei Desinfektion mit Chlordioxid | — | Maximum · Comune di Valganna · Source [2] |
| Chromium | < 5 µg/l below limit of quantification | 50 µg/l | < 10 % * | Maximum · Comune di Valganna · Source [1] |
| Copper | < 0,2 mg/l below limit of quantification | 2 mg/l | < 10 % * | Maximum · Comune di Valganna · Source [1] |
| Dibromochloromethane | < 1 µg/l below limit of quantification | — | — | Maximum · Comune di Valganna · Source [1] |
| Fluoride | 0,1 mg/l | 1.5 mg/l | 7 % | Median · Comune di Valganna · Source [1] |
| Lead | < 1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Maximum · Comune di Valganna · Source [1] |
| Molinate | < 0,01 µg/l below limit of quantification | — | — | Maximum · Comune di Valganna · Source [1] |
| Nickel | 1 µg/l | 20 µg/l | 5 % | Maximum · Comune di Valganna · Source [1] |
| Nitrate | 4 mg/l | 50 mg/l | 8 % | Median · Comune di Valganna · Source [1] |
| Nitrite | < 0,05 mg/l below limit of quantification | 0.5 mg/l | < 10 % * | Maximum · Comune di Valganna · Source [1] |
| Propazine | < 0,01 µg/l below limit of quantification | — | — | Maximum · Comune di Valganna · Source [1] |
| Selenium | < 1 µg/l below limit of quantification | 20 µg/l | < 5 % * | Maximum · Comune di Valganna · Source [1] |
| Simazine | < 0,01 µg/l below limit of quantification | — | — | Maximum · Comune di Valganna · Source [1] |
| Terbuthylazine | < 0,01 µg/l below limit of quantification | — | — | Maximum · Comune di Valganna · Source [1] |
| Tetrachloroethene | < 1 µg/l below limit of quantification | — | — | Maximum · Comune di Valganna · Source [1] |
| Tetrachloroethene and Trichloroethene (sum) | < 1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Maximum · Comune di Valganna · Source [4] |
| Tribromomethane (bromoform) | < 1 µg/l below limit of quantification | — | — | Maximum · Comune di Valganna · Source [1] |
| Trichloroethene | < 1 µg/l below limit of quantification | — | — | Maximum · Comune di Valganna · Source [1] |
| Trichloromethane (chloroform) | 2 µg/l | — | — | Median · Comune di Valganna · Source [1] |
| Trihalomethanes — Total | 3 µg/l | 30 µg/l | 10 % | Median · Comune di Valganna · Source [1] |
* 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 |
|---|---|---|---|---|
| HFPO-DA (GenX) | < 0,010 µg/l below limit of quantification | — | — | Maximum · Comune di Valganna · Source [1] |
| Perfluorodecane sulfonic acid (PFDS) | < 0,010 µg/l below limit of quantification | — | — | Maximum · Comune di Valganna · Source [1] |
| Trifluoroacetic acid (TFA) | 1 µg/l | 10 µg/l | 10 % | Median · Comune di Valganna · Source [3] |
Indicator parameters (13)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | 10 µg/l | 0.2 mg/l | 5 % | Median · Comune di Valganna · Source [1] |
| Ammonium | < 0,13 mg/l below limit of quantification | 0.5 mg/l | < 26 % * | Maximum · Comune di Valganna · Source [1] |
| Chloride | 3 mg/l | 250 mg/l | 1 % | Median · Comune di Valganna · Source [1] |
| Clostridium perfringens (including spores) | 2 UFC/100ml | 0/100 ml | above the parametric value — this parameter must not be detectable | Maximum · Median 0 · Comune di Valganna · Source [1] |
| Coliform bacteria | 0 UFC/100ml | 0/100 ml | — | Maximum · Median 0 · Comune di Valganna · Source [1] |
| Colony count 22 °C | 0 UFC/1ml | senza variazioni anomale | — | Median · Comune di Valganna · Source [1] |
| Iron | 12 µg/l | 0.2 mg/l | 6 % | Median · Comune di Valganna · Source [1] |
| Manganese | < 5 µg/l below limit of quantification | 50 µg/l | < 10 % * | Maximum · Comune di Valganna · Source [1] |
| pH | 7,4 pH_unit | 6,5–9,5 | — | Median · Comune di Valganna · Source [1] |
| Sodium | 3 mg/l | 200 mg/l | 2 % | Median · Comune di Valganna · Source [1] |
| Sulphate | 4 mg/l | 250 mg/l | 2 % | Median · Comune di Valganna · Source [1] |
| Total organic carbon (TOC) | 0,3 mg/l | senza variazioni anomale | — | Maximum · Comune di Valganna · Source [1] |
| Turbidity | 0,34 NTU | accettabile per i consumatori, senza variazioni anomale | — | Median · Comune di Valganna · Source [1] |
* 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.
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.
Further parameters (8)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Barium | < 2 mg/l below limit of quantification | — | — | Maximum · Comune di Valganna · Source [1] |
| Calcium | 36 mg/l | — | — | Median · Comune di Valganna · Source [1] |
| Dry residue | 205 mg/l | — | — | Median · Comune di Valganna · Source [1] |
| Magnesium | 16 mg/l | — | — | Median · Comune di Valganna · Source [1] |
| Potassium | 0,6 mg/l | — | — | Median · Comune di Valganna · Source [3] |
| Total hardness | 15,2 ° f | — | — | Median · Comune di Valganna · Source [1] |
| Vanadium | < 10 µg/l below limit of quantification | 0.14 mg/l | < 7 % * | Maximum · Comune di Valganna · Source [1] |
| Zinc | 31 µg/l | — | — | Median · Comune di Valganna · Source [1] |
* 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.
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.
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.
Legal basis: Art. 18 D.Lgs. 18/2023 as amended by D.Lgs. 102/2025 (transposition of EU Directive 2020/2184). The values are not official — the publication of the Gestore, to which every row links, remains authoritative. Assignment of the comune: information in the analysis document, resolved against the municipality list of ISTAT (territorial status 01.01.2026, CC BY 4.0).