Italy · Comune
Drinking water in Vedano Olona
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 Vedano Olona
ALFA S.r.l.| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 24 mg/l | 50 mg/l | 48 % | Median · Comune di Vedano Olona · Source [1] |
| Lead | < 1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Maximum · Comune di Vedano Olona · Source [1] |
| Escherichia coli (E. coli) | 0 UFC/100ml | 0/100 ml | — | Maximum · Median 0 · Comune di Vedano Olona · Source [1] |
| Sulphate | 17 mg/l | 250 mg/l | 7 % | Median · Comune di Vedano Olona · Source [1] |
| Sodium | 10 mg/l | 200 mg/l | 5 % | Median · Comune di Vedano Olona · 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 (59 — 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 Vedano Olona · Source [1] |
| Intestinal enterococci | 0 UFC/100ml | 0/100 ml | — | Maximum · Median 0 · Comune di Vedano Olona · Source [1] |
Chemical parameters (34)
| 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 Vedano Olona · Source [1] |
| Alachlor | < 0,01 µg/l below limit of quantification | — | — | Maximum · Comune di Vedano Olona · Source [1] |
| Antimony | < 1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Maximum · Comune di Vedano Olona · Source [1] |
| Arsenic | 1 µg/l | 10 µg/l | 10 % | Median · Comune di Vedano Olona · Source [1] |
| Atrazine | < 0,01 µg/l below limit of quantification | — | — | Maximum · Comune di Vedano Olona · Source [1] |
| Bentazone | < 0,01 µg/l below limit of quantification | — | — | Maximum · Comune di Vedano Olona · Source [1] |
| Benzene | < 0,3 µg/l below limit of quantification | 1 µg/l | < 30 % * | Maximum · Comune di Vedano Olona · Source [1] |
| Boron | < 0,3 mg/l below limit of quantification | 1.5 mg/l | < 20 % * | Maximum · Comune di Vedano Olona · Source [1] |
| Bromodichloromethane | < 1 µg/l below limit of quantification | — | — | Maximum · Comune di Vedano Olona · Source [1] |
| Cadmium | < 1,0 µg/l below limit of quantification | 5 µg/l | < 20 % * | Maximum · Comune di Vedano Olona · Source [1] |
| Chlorate | 0,08 mg/l | 0,25 — bzw. 0,70 bei Desinfektion mit Chlordioxid | — | Median · Comune di Vedano Olona · Source [2] |
| Chlorite | < 0,05 mg/l below limit of quantification | 0,25 — bzw. 0,70 bei Desinfektion mit Chlordioxid | — | Maximum · Comune di Vedano Olona · Source [3] |
| Chromium | < 5 µg/l below limit of quantification | 50 µg/l | < 10 % * | Maximum · Comune di Vedano Olona · Source [1] |
| Copper | < 0,2 mg/l below limit of quantification | 2 mg/l | < 10 % * | Maximum · Comune di Vedano Olona · Source [1] |
| Dibromochloromethane | < 1 µg/l below limit of quantification | — | — | Maximum · Comune di Vedano Olona · Source [1] |
| Fluoride | < 0,1 mg/l below limit of quantification | 1.5 mg/l | < 7 % * | Maximum · Comune di Vedano Olona · Source [1] |
| Haloacetic acids (HAA) | 9,1 ug/l | 60 µg/l | 15 % | Maximum · Comune di Vedano Olona · Source [2] |
| Lead | < 1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Maximum · Comune di Vedano Olona · Source [1] |
| Mercury | < 0,1 µg/l below limit of quantification | 1 µg/l | < 10 % * | Maximum · Comune di Vedano Olona · Source [1] |
| Molinate | < 0,01 µg/l below limit of quantification | — | — | Maximum · Comune di Vedano Olona · Source [1] |
| Nickel | < 2 µg/l below limit of quantification | 20 µg/l | < 10 % * | Maximum · Comune di Vedano Olona · Source [1] |
| Nitrate | 24 mg/l | 50 mg/l | 48 % | Median · Comune di Vedano Olona · Source [1] |
| Nitrite | < 0,05 mg/l below limit of quantification | 0.5 mg/l | < 10 % * | Maximum · Comune di Vedano Olona · Source [1] |
| Pesticides — Total | 0,02 µg/l | 0.5 µg/l | 4 % | Median · Comune di Vedano Olona · Source [1] |
| Polycyclic aromatic hydrocarbons | < 0,01 µg/l below limit of quantification | 0.1 µg/l | < 10 % * | Maximum · Comune di Vedano Olona · Source [1] |
| Propazine | < 0,01 µg/l below limit of quantification | — | — | Maximum · Comune di Vedano Olona · Source [1] |
| Selenium | < 1 µg/l below limit of quantification | 20 µg/l | < 5 % * | Maximum · Comune di Vedano Olona · Source [1] |
| Simazine | < 0,01 µg/l below limit of quantification | — | — | Maximum · Comune di Vedano Olona · Source [1] |
| Terbuthylazine | < 0,01 µg/l below limit of quantification | — | — | Maximum · Comune di Vedano Olona · Source [1] |
| Tetrachloroethene | < 1 µg/l below limit of quantification | — | — | Maximum · Comune di Vedano Olona · Source [1] |
| Tribromomethane (bromoform) | 1 µg/l | — | — | Maximum · Comune di Vedano Olona · Source [1] |
| Trichloroethene | < 1 µg/l below limit of quantification | — | — | Maximum · Comune di Vedano Olona · Source [1] |
| Trichloromethane (chloroform) | < 1 µg/l below limit of quantification | — | — | Maximum · Comune di Vedano Olona · Source [1] |
| Trihalomethanes — Total | 1 µg/l | 30 µg/l | 3 % | Maximum · Comune di Vedano Olona · 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 (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| HFPO-DA (GenX) | < 0,010 µg/l below limit of quantification | — | — | Maximum · Comune di Vedano Olona · Source [1] |
| Perfluorodecane sulfonic acid (PFDS) | < 0,010 µg/l below limit of quantification | — | — | Maximum · Comune di Vedano Olona · Source [1] |
Indicator parameters (13)
| 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 Vedano Olona · Source [1] |
| Ammonium | < 0,10 mg/l below limit of quantification | 0.5 mg/l | < 20 % * | Maximum · Comune di Vedano Olona · Source [1] |
| Chloride | 18 mg/l | 250 mg/l | 7 % | Median · Comune di Vedano Olona · Source [1] |
| Clostridium perfringens (including spores) | 1 UFC/100ml | 0/100 ml | above the parametric value — this parameter must not be detectable | Maximum · Median 0 · Comune di Vedano Olona · Source [1] |
| Coliform bacteria | 0 UFC/100ml | 0/100 ml | — | Maximum · Median 0 · Comune di Vedano Olona · Source [1] |
| Colony count 22 °C | 0 UFC/1ml | senza variazioni anomale | — | Median · Comune di Vedano Olona · Source [1] |
| Iron | 12 µg/l | 0.2 mg/l | 6 % | Median · Comune di Vedano Olona · Source [1] |
| Manganese | < 5 µg/l below limit of quantification | 50 µg/l | < 10 % * | Maximum · Comune di Vedano Olona · Source [1] |
| pH | 7,3 pH_unit | 6,5–9,5 | — | Median · Comune di Vedano Olona · Source [1] |
| Sodium | 10 mg/l | 200 mg/l | 5 % | Median · Comune di Vedano Olona · Source [1] |
| Sulphate | 17 mg/l | 250 mg/l | 7 % | Median · Comune di Vedano Olona · Source [1] |
| Total organic carbon (TOC) | 0,7 mg/l | senza variazioni anomale | — | Maximum · Comune di Vedano Olona · Source [1] |
| Turbidity | 0,21 NTU | accettabile per i consumatori, senza variazioni anomale | — | Median · Comune di Vedano Olona · 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 Vedano Olona · Source [1] |
| Calcium | 84 mg/l | — | — | Median · Comune di Vedano Olona · Source [1] |
| Dry residue | 385 mg/l | — | — | Median · Comune di Vedano Olona · Source [1] |
| Magnesium | 18 mg/l | — | — | Median · Comune di Vedano Olona · Source [1] |
| Potassium | 2 mg/l | — | — | Median · Comune di Vedano Olona · Source [1] |
| Total hardness | 29,3 ° f | — | — | Median · Comune di Vedano Olona · Source [1] |
| Vanadium | < 10 µg/l below limit of quantification | 0.14 mg/l | < 7 % * | Maximum · Comune di Vedano Olona · Source [1] |
| Zinc | 22 µg/l | — | — | Median · Comune di Vedano Olona · 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).