Italy · Comune
Drinking water in Saronno
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 Saronno
ALFA S.r.l.These values are more than a year old. The most recent analysis the water supplier has published for this zone dates from 10/06/2025. 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 |
|---|---|---|---|---|
| Sum of PFAS | 0,0021 ug/l | 0.1 µg/l | 2 % | Maximum · Comune di Saronno · Source [3] |
| Nitrate | 31 mg/l | 50 mg/l | 62 % | Median · Comune di Saronno · Source [1] |
| Lead | 2 µg/l | 10 µg/l | 20 % | Maximum · Comune di Saronno · Source [1] |
| Escherichia coli (E. coli) | 0 UFC/100ml | 0/100 ml | — | Maximum · Median 0 · Comune di Saronno · Source [1] |
| Sulphate | 9 mg/l | 250 mg/l | 4 % | Median · Comune di Saronno · Source [1] |
| Sodium | 6 mg/l | 200 mg/l | 3 % | Median · Comune di Saronno · Source [1] |
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 Saronno · Source [1] |
| Intestinal enterococci | 0 UFC/100ml | 0/100 ml | — | Maximum · Median 0 · Comune di Saronno · Source [1] |
Chemical parameters (32)
| 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 Saronno · Source [1] |
| Alachlor | < 0,01 µg/l below limit of quantification | — | — | Maximum · Comune di Saronno · Source [1] |
| Antimony | < 1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Maximum · Comune di Saronno · Source [1] |
| Arsenic | 2 µg/l | 10 µg/l | 20 % | Median · Comune di Saronno · Source [1] |
| Atrazine | 0,01 µg/l | — | — | Maximum · Comune di Saronno · Source [1] |
| Bentazone | < 0,01 µg/l below limit of quantification | — | — | Maximum · Comune di Saronno · Source [1] |
| Benzene | < 0,3 µg/l below limit of quantification | 1 µg/l | < 30 % * | Maximum · Comune di Saronno · Source [1] |
| Boron | < 0,3 mg/l below limit of quantification | 1.5 mg/l | < 20 % * | Maximum · Comune di Saronno · Source [1] |
| Bromodichloromethane | < 1 µg/l below limit of quantification | — | — | Maximum · Comune di Saronno · Source [1] |
| Cadmium | < 1,0 µg/l below limit of quantification | 5 µg/l | < 20 % * | Maximum · Comune di Saronno · Source [1] |
| Chlorate | < 0,05 mg/l below limit of quantification | 0,25 — bzw. 0,70 bei Desinfektion mit Chlordioxid | — | Maximum · Comune di Saronno · Source [2] |
| Chlorite | < 0,05 mg/l below limit of quantification | 0,25 — bzw. 0,70 bei Desinfektion mit Chlordioxid | — | Maximum · Comune di Saronno · Source [2] |
| Chromium | 2 µg/l | 50 µg/l | 4 % | Maximum · Comune di Saronno · Source [1] |
| Copper | < 0,2 mg/l below limit of quantification | 2 mg/l | < 10 % * | Maximum · Comune di Saronno · Source [1] |
| Dibromochloromethane | < 1 µg/l below limit of quantification | — | — | Maximum · Comune di Saronno · Source [1] |
| Fluoride | 0,1 mg/l | 1.5 mg/l | 7 % | Median · Comune di Saronno · Source [1] |
| Lead | 2 µg/l | 10 µg/l | 20 % | Maximum · Comune di Saronno · Source [1] |
| Molinate | < 0,01 µg/l below limit of quantification | — | — | Maximum · Comune di Saronno · Source [1] |
| Nickel | < 2 µg/l below limit of quantification | 20 µg/l | < 10 % * | Maximum · Comune di Saronno · Source [1] |
| Nitrate | 31 mg/l | 50 mg/l | 62 % | Median · Comune di Saronno · Source [1] |
| Nitrite | < 0,05 mg/l below limit of quantification | 0.5 mg/l | < 10 % * | Maximum · Comune di Saronno · Source [1] |
| Pesticides — Total | 0,07 µg/l | 0.5 µg/l | 14 % | Median · Comune di Saronno · Source [1] |
| Propazine | < 0,01 µg/l below limit of quantification | — | — | Maximum · Comune di Saronno · Source [1] |
| Selenium | < 1 µg/l below limit of quantification | 20 µg/l | < 5 % * | Maximum · Comune di Saronno · Source [1] |
| Simazine | < 0,01 µg/l below limit of quantification | — | — | Maximum · Comune di Saronno · Source [1] |
| Terbuthylazine | < 0,01 µg/l below limit of quantification | — | — | Maximum · Comune di Saronno · Source [1] |
| Tetrachloroethene | 1 µg/l | — | — | Median · Comune di Saronno · Source [3] |
| Tetrachloroethene and Trichloroethene (sum) | 3 µg/l | 10 µg/l | 30 % | Median · Comune di Saronno · Source [3] |
| Tribromomethane (bromoform) | < 1 µg/l below limit of quantification | — | — | Maximum · Comune di Saronno · Source [1] |
| Trichloroethene | 2 µg/l | — | — | Median · Comune di Saronno · Source [3] |
| Trichloromethane (chloroform) | < 1 µg/l below limit of quantification | — | — | Maximum · Comune di Saronno · Source [1] |
| Trihalomethanes — Total | < 1 µg/l below limit of quantification | 30 µg/l | < 3 % * | Maximum · Comune di Saronno · Source [3] |
* 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 (4)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| HFPO-DA (GenX) | < 0,0015 µg/l below limit of quantification | — | — | Maximum · Comune di Saronno · Source [2] |
| Perfluorodecane sulfonic acid (PFDS) | < 0,0015 µg/l below limit of quantification | — | — | Maximum · Comune di Saronno · Source [2] |
| Sum of 4 PFAS | 0,0106 µg/l | 20 ng/l | 53 % | Maximum · Comune di Saronno · Source [2] |
| Sum of PFAS | 0,0021 ug/l | 0.1 µg/l | 2 % | Maximum · Comune di Saronno · Source [3] |
Indicator parameters (11)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | < 20 µg/l below limit of quantification | 0.2 mg/l | < 10 % * | Maximum · Comune di Saronno · Source [1] |
| Ammonium | < 0,10 mg/l below limit of quantification | 0.5 mg/l | < 20 % * | Maximum · Comune di Saronno · Source [1] |
| Chloride | 10 mg/l | 250 mg/l | 4 % | Median · Comune di Saronno · Source [1] |
| Coliform bacteria | 0 UFC/100ml | 0/100 ml | — | Maximum · Median 0 · Comune di Saronno · Source [1] |
| Colony count 22 °C | 0 UFC/1ml | senza variazioni anomale | — | Median · Comune di Saronno · Source [1] |
| Iron | < 20 µg/l below limit of quantification | 0.2 mg/l | < 10 % * | Maximum · Comune di Saronno · Source [1] |
| Manganese | < 5 µg/l below limit of quantification | 50 µg/l | < 10 % * | Maximum · Comune di Saronno · Source [1] |
| pH | 7,6 pH_unit | 6,5–9,5 | — | Median · Comune di Saronno · Source [1] |
| Sodium | 6 mg/l | 200 mg/l | 3 % | Median · Comune di Saronno · Source [1] |
| Sulphate | 9 mg/l | 250 mg/l | 4 % | Median · Comune di Saronno · Source [1] |
| Turbidity | 0,5 NTU | accettabile per i consumatori, senza variazioni anomale | — | Median · Comune di Saronno · 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.
Further parameters (8)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Barium | < 2 mg/l below limit of quantification | — | — | Maximum · Comune di Saronno · Source [1] |
| Calcium | 48 mg/l | — | — | Median · Comune di Saronno · Source [1] |
| Dry residue | 219 mg/l | — | — | Median · Comune di Saronno · Source [1] |
| Magnesium | 8 mg/l | — | — | Median · Comune di Saronno · Source [1] |
| Potassium | 8 mg/l | — | — | Maximum · Comune di Saronno · Source [1] |
| Total hardness | 15 ° f | — | — | Median · Comune di Saronno · Source [1] |
| Vanadium | < 10 µg/l below limit of quantification | 0.14 mg/l | < 7 % * | Maximum · Comune di Saronno · Source [1] |
| Zinc | 14 µg/l | — | — | Median · Comune di Saronno · 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).