Italy · Comune
Drinking water in San Siro
3 supply zones, published by Como Acqua 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 San Siro Fontana Fraz.Pezzo Via Principale
Como Acqua S.r.l.Water hardness
3.4 °dH
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 5 mg/L | 50 mg/l | 10 % | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
| Lead | < 1 µg/L below limit of quantification | 10 µg/l | < 10 % * | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
| Escherichia coli (E. coli) | < 1 MPN/100ml below limit of quantification | 0/100 ml | — | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
| Sulphate | 24 mg/L | 250 mg/l | 10 % | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
| Sodium | < 15 mg/L below limit of quantification | 200 mg/l | < 8 % * | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
* 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 (44 — most recent value per parameter)
Microbiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | < 1 MPN/100ml below limit of quantification | 0/100 ml | — | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
| Intestinal enterococci | < 1 UFC/100 mL below limit of quantification | 0/100 ml | — | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
Chemical parameters (21)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | < 0.2 µg/L below limit of quantification | 3 µg/l | < 7 % * | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
| Antimony | < 1 µg/L below limit of quantification | 10 µg/l | < 10 % * | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
| Arsenic | 2 µg/L | 10 µg/l | 20 % | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
| Benzene | < 0.2 µg/L below limit of quantification | 1 µg/l | < 20 % * | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
| Boron | < 0.05 mg/L below limit of quantification | 1.5 mg/l | < 3 % * | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
| Cadmium | < 1.0 µg/L below limit of quantification | 5 µg/l | < 20 % * | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
| Chlorate | < 0.05 mg/L below limit of quantification | 0,25 — bzw. 0,70 bei Desinfektion mit Chlordioxid | — | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
| Chlorite | < 0.05 mg/L below limit of quantification | 0,25 — bzw. 0,70 bei Desinfektion mit Chlordioxid | — | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
| Chromium | < 5 µg/L below limit of quantification | 25 µg/l | < 20 % * | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
| Copper | < 0.05 mg/L below limit of quantification | 2 mg/l | < 3 % * | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
| Fluoride | < 0.20 mg/L below limit of quantification | 1.5 mg/l | < 13 % * | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
| Lead | < 1 µg/L below limit of quantification | 10 µg/l | < 10 % * | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
| Mercury | < 0.25 µg/L below limit of quantification | 1 µg/l | < 25 % * | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
| Nickel | < 5 µg/L below limit of quantification | 20 µg/l | < 25 % * | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
| Nitrate | 5 mg/L | 50 mg/l | 10 % | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
| Nitrite | < 0.05 mg/L below limit of quantification | 0.5 mg/l | < 10 % * | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
| Selenium | < 5 µg/L below limit of quantification | 20 µg/l | < 25 % * | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
| Tetrachloroethene and Trichloroethene (sum) | < 1 µg/L below limit of quantification | 10 µg/l | < 10 % * | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
| Trihalomethanes — Total | < 4 µg/L below limit of quantification | 30 µg/l | < 13 % * | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
| Uranium | 2 µg/L | 30 µg/l | 7 % | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
| Vinyl chloride | < 0.08 µg/L below limit of quantification | 0.5 µg/l | < 16 % * | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
* 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.
Indicator parameters (15)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | < 10 µg/L below limit of quantification | 0.2 mg/l | < 5 % * | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
| Ammonium | < 0.02 mg/L below limit of quantification | 0.5 mg/l | < 4 % * | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
| Chloride | < 5 mg/L below limit of quantification | 250 mg/l | < 2 % * | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
| Coliform bacteria | < 1 MPN/100ml below limit of quantification | 0/100 ml | — | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
| Colony count 22 °C | 5 UFC/1ml | senza variazioni anomale | — | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
| Colour | Accettabile | accettabile per i consumatori, senza variazioni anomale | — | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
| Conductivity (25 °C) | 227 µS/cm a 20°C | 2,500 µS/cm | — | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
| Iron | < 10 µg/L below limit of quantification | 0.2 mg/l | < 5 % * | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
| Manganese | < 5 µg/L below limit of quantification | 50 µg/l | < 10 % * | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
| Odour | Accettabile | accettabile per i consumatori, senza variazioni anomale | — | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
| pH | 7.76 Unità pH | 6,5–9,5 | — | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
| Sodium | < 15 mg/L below limit of quantification | 200 mg/l | < 8 % * | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
| Sulphate | 24 mg/L | 250 mg/l | 10 % | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
| Taste | Accettabile | accettabile per i consumatori, senza variazioni anomale | — | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
| Turbidity | 0.21 NTU | accettabile per i consumatori, senza variazioni anomale | — | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
* 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 (6)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 32 mg/L | — | — | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
| Dry residue | 76 mg/L | — | — | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
| Magnesium | 13 mg/L | — | — | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
| Potassium | < 5 mg/L below limit of quantification | — | — | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
| Total hardness | 6 °F | — | — | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
| Vanadium | < 10 µg/L below limit of quantification | 0.14 mg/l | < 7 % * | Single value · Comune di San Siro Fontana Fraz.Pezzo Via Principale |
* 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.
Source: https://comoacqua.it/qualita-acqua/ · 20 febbraio 2026 · Dati aggiornati al 20 febbraio 2026 · retrieved on 16/08/2026
Comune di San Siro Fontana Via Molvedo
Como Acqua S.r.l.Water hardness
1.7 °dH
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | < 5 mg/L below limit of quantification | 50 mg/l | < 10 % * | Single value · Comune di San Siro Fontana Via Molvedo |
| Lead | < 1 µg/L below limit of quantification | 10 µg/l | < 10 % * | Single value · Comune di San Siro Fontana Via Molvedo |
| Escherichia coli (E. coli) | < 1 MPN/100ml below limit of quantification | 0/100 ml | — | Single value · Comune di San Siro Fontana Via Molvedo |
| Sulphate | < 10 mg/L below limit of quantification | 250 mg/l | < 4 % * | Single value · Comune di San Siro Fontana Via Molvedo |
| Sodium | < 15 mg/L below limit of quantification | 200 mg/l | < 8 % * | Single value · Comune di San Siro Fontana Via Molvedo |
* 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 (44 — most recent value per parameter)
Microbiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | < 1 MPN/100ml below limit of quantification | 0/100 ml | — | Single value · Comune di San Siro Fontana Via Molvedo |
| Intestinal enterococci | < 1 UFC/100 mL below limit of quantification | 0/100 ml | — | Single value · Comune di San Siro Fontana Via Molvedo |
Chemical parameters (21)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | < 0.2 µg/L below limit of quantification | 3 µg/l | < 7 % * | Single value · Comune di San Siro Fontana Via Molvedo |
| Antimony | < 1 µg/L below limit of quantification | 10 µg/l | < 10 % * | Single value · Comune di San Siro Fontana Via Molvedo |
| Arsenic | 3 µg/L | 10 µg/l | 30 % | Single value · Comune di San Siro Fontana Via Molvedo |
| Benzene | < 0.2 µg/L below limit of quantification | 1 µg/l | < 20 % * | Single value · Comune di San Siro Fontana Via Molvedo |
| Boron | < 0.05 mg/L below limit of quantification | 1.5 mg/l | < 3 % * | Single value · Comune di San Siro Fontana Via Molvedo |
| Cadmium | < 1.0 µg/L below limit of quantification | 5 µg/l | < 20 % * | Single value · Comune di San Siro Fontana Via Molvedo |
| Chlorate | < 0.05 mg/L below limit of quantification | 0,25 — bzw. 0,70 bei Desinfektion mit Chlordioxid | — | Single value · Comune di San Siro Fontana Via Molvedo |
| Chlorite | < 0.05 mg/L below limit of quantification | 0,25 — bzw. 0,70 bei Desinfektion mit Chlordioxid | — | Single value · Comune di San Siro Fontana Via Molvedo |
| Chromium | < 5 µg/L below limit of quantification | 25 µg/l | < 20 % * | Single value · Comune di San Siro Fontana Via Molvedo |
| Copper | < 0.05 mg/L below limit of quantification | 2 mg/l | < 3 % * | Single value · Comune di San Siro Fontana Via Molvedo |
| Fluoride | < 0.20 mg/L below limit of quantification | 1.5 mg/l | < 13 % * | Single value · Comune di San Siro Fontana Via Molvedo |
| Lead | < 1 µg/L below limit of quantification | 10 µg/l | < 10 % * | Single value · Comune di San Siro Fontana Via Molvedo |
| Mercury | < 0.25 µg/L below limit of quantification | 1 µg/l | < 25 % * | Single value · Comune di San Siro Fontana Via Molvedo |
| Nickel | < 5 µg/L below limit of quantification | 20 µg/l | < 25 % * | Single value · Comune di San Siro Fontana Via Molvedo |
| Nitrate | < 5 mg/L below limit of quantification | 50 mg/l | < 10 % * | Single value · Comune di San Siro Fontana Via Molvedo |
| Nitrite | < 0.05 mg/L below limit of quantification | 0.5 mg/l | < 10 % * | Single value · Comune di San Siro Fontana Via Molvedo |
| Selenium | < 5 µg/L below limit of quantification | 20 µg/l | < 25 % * | Single value · Comune di San Siro Fontana Via Molvedo |
| Tetrachloroethene and Trichloroethene (sum) | < 1 µg/L below limit of quantification | 10 µg/l | < 10 % * | Single value · Comune di San Siro Fontana Via Molvedo |
| Trihalomethanes — Total | < 4 µg/L below limit of quantification | 30 µg/l | < 13 % * | Single value · Comune di San Siro Fontana Via Molvedo |
| Uranium | < 1 µg/L below limit of quantification | 30 µg/l | < 3 % * | Single value · Comune di San Siro Fontana Via Molvedo |
| Vinyl chloride | < 0.08 µg/L below limit of quantification | 0.5 µg/l | < 16 % * | Single value · Comune di San Siro Fontana Via Molvedo |
* 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.
Indicator parameters (15)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | < 10 µg/L below limit of quantification | 0.2 mg/l | < 5 % * | Single value · Comune di San Siro Fontana Via Molvedo |
| Ammonium | < 0.02 mg/L below limit of quantification | 0.5 mg/l | < 4 % * | Single value · Comune di San Siro Fontana Via Molvedo |
| Chloride | < 5 mg/L below limit of quantification | 250 mg/l | < 2 % * | Single value · Comune di San Siro Fontana Via Molvedo |
| Coliform bacteria | < 1 MPN/100ml below limit of quantification | 0/100 ml | — | Single value · Comune di San Siro Fontana Via Molvedo |
| Colony count 22 °C | < 1 UFC/1ml below limit of quantification | senza variazioni anomale | — | Single value · Comune di San Siro Fontana Via Molvedo |
| Colour | Accettabile | accettabile per i consumatori, senza variazioni anomale | — | Single value · Comune di San Siro Fontana Via Molvedo |
| Conductivity (25 °C) | 185 µS/cm a 20°C | 2,500 µS/cm | — | Single value · Comune di San Siro Fontana Via Molvedo |
| Iron | 32 µg/L | 0.2 mg/l | 16 % | Single value · Comune di San Siro Fontana Via Molvedo |
| Manganese | < 5 µg/L below limit of quantification | 50 µg/l | < 10 % * | Single value · Comune di San Siro Fontana Via Molvedo |
| Odour | Accettabile | accettabile per i consumatori, senza variazioni anomale | — | Single value · Comune di San Siro Fontana Via Molvedo |
| pH | 7.66 Unità pH | 6,5–9,5 | — | Single value · Comune di San Siro Fontana Via Molvedo |
| Sodium | < 15 mg/L below limit of quantification | 200 mg/l | < 8 % * | Single value · Comune di San Siro Fontana Via Molvedo |
| Sulphate | < 10 mg/L below limit of quantification | 250 mg/l | < 4 % * | Single value · Comune di San Siro Fontana Via Molvedo |
| Taste | Accettabile | accettabile per i consumatori, senza variazioni anomale | — | Single value · Comune di San Siro Fontana Via Molvedo |
| Turbidity | 0.38 NTU | accettabile per i consumatori, senza variazioni anomale | — | Single value · Comune di San Siro Fontana Via Molvedo |
* 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 (6)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | < 15 mg/L below limit of quantification | — | — | Single value · Comune di San Siro Fontana Via Molvedo |
| Dry residue | 51 mg/L | — | — | Single value · Comune di San Siro Fontana Via Molvedo |
| Magnesium | < 5 mg/L below limit of quantification | — | — | Single value · Comune di San Siro Fontana Via Molvedo |
| Potassium | < 5 mg/L below limit of quantification | — | — | Single value · Comune di San Siro Fontana Via Molvedo |
| Total hardness | 3 °F | — | — | Single value · Comune di San Siro Fontana Via Molvedo |
| Vanadium | < 10 µg/L below limit of quantification | 0.14 mg/l | < 7 % * | Single value · Comune di San Siro Fontana Via Molvedo |
* 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.
Source: https://comoacqua.it/qualita-acqua/ · 20 febbraio 2026 · Dati aggiornati al 20 febbraio 2026 · retrieved on 16/08/2026
Comune di San Siro Fontana Via S.Maria
Como Acqua S.r.l.Water hardness
1.7 °dH
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | < 5 mg/L below limit of quantification | 50 mg/l | < 10 % * | Single value · Comune di San Siro Fontana Via S.Maria |
| Lead | < 1 µg/L below limit of quantification | 10 µg/l | < 10 % * | Single value · Comune di San Siro Fontana Via S.Maria |
| Escherichia coli (E. coli) | < 1 MPN/100ml below limit of quantification | 0/100 ml | — | Single value · Comune di San Siro Fontana Via S.Maria |
| Sulphate | < 10 mg/L below limit of quantification | 250 mg/l | < 4 % * | Single value · Comune di San Siro Fontana Via S.Maria |
| Sodium | < 15 mg/L below limit of quantification | 200 mg/l | < 8 % * | Single value · Comune di San Siro Fontana Via S.Maria |
* 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 (44 — most recent value per parameter)
Microbiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | < 1 MPN/100ml below limit of quantification | 0/100 ml | — | Single value · Comune di San Siro Fontana Via S.Maria |
| Intestinal enterococci | < 1 UFC/100 mL below limit of quantification | 0/100 ml | — | Single value · Comune di San Siro Fontana Via S.Maria |
Chemical parameters (21)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | < 0.2 µg/L below limit of quantification | 3 µg/l | < 7 % * | Single value · Comune di San Siro Fontana Via S.Maria |
| Antimony | < 1 µg/L below limit of quantification | 10 µg/l | < 10 % * | Single value · Comune di San Siro Fontana Via S.Maria |
| Arsenic | 3 µg/L | 10 µg/l | 30 % | Single value · Comune di San Siro Fontana Via S.Maria |
| Benzene | < 0.2 µg/L below limit of quantification | 1 µg/l | < 20 % * | Single value · Comune di San Siro Fontana Via S.Maria |
| Boron | < 0.05 mg/L below limit of quantification | 1.5 mg/l | < 3 % * | Single value · Comune di San Siro Fontana Via S.Maria |
| Cadmium | < 1.0 µg/L below limit of quantification | 5 µg/l | < 20 % * | Single value · Comune di San Siro Fontana Via S.Maria |
| Chlorate | < 0.05 mg/L below limit of quantification | 0,25 — bzw. 0,70 bei Desinfektion mit Chlordioxid | — | Single value · Comune di San Siro Fontana Via S.Maria |
| Chlorite | < 0.05 mg/L below limit of quantification | 0,25 — bzw. 0,70 bei Desinfektion mit Chlordioxid | — | Single value · Comune di San Siro Fontana Via S.Maria |
| Chromium | < 5 µg/L below limit of quantification | 25 µg/l | < 20 % * | Single value · Comune di San Siro Fontana Via S.Maria |
| Copper | < 0.05 mg/L below limit of quantification | 2 mg/l | < 3 % * | Single value · Comune di San Siro Fontana Via S.Maria |
| Fluoride | < 0.20 mg/L below limit of quantification | 1.5 mg/l | < 13 % * | Single value · Comune di San Siro Fontana Via S.Maria |
| Lead | < 1 µg/L below limit of quantification | 10 µg/l | < 10 % * | Single value · Comune di San Siro Fontana Via S.Maria |
| Mercury | < 0.25 µg/L below limit of quantification | 1 µg/l | < 25 % * | Single value · Comune di San Siro Fontana Via S.Maria |
| Nickel | < 5 µg/L below limit of quantification | 20 µg/l | < 25 % * | Single value · Comune di San Siro Fontana Via S.Maria |
| Nitrate | < 5 mg/L below limit of quantification | 50 mg/l | < 10 % * | Single value · Comune di San Siro Fontana Via S.Maria |
| Nitrite | < 0.05 mg/L below limit of quantification | 0.5 mg/l | < 10 % * | Single value · Comune di San Siro Fontana Via S.Maria |
| Selenium | < 5 µg/L below limit of quantification | 20 µg/l | < 25 % * | Single value · Comune di San Siro Fontana Via S.Maria |
| Tetrachloroethene and Trichloroethene (sum) | < 1 µg/L below limit of quantification | 10 µg/l | < 10 % * | Single value · Comune di San Siro Fontana Via S.Maria |
| Trihalomethanes — Total | < 4 µg/L below limit of quantification | 30 µg/l | < 13 % * | Single value · Comune di San Siro Fontana Via S.Maria |
| Uranium | < 1 µg/L below limit of quantification | 30 µg/l | < 3 % * | Single value · Comune di San Siro Fontana Via S.Maria |
| Vinyl chloride | < 0.08 µg/L below limit of quantification | 0.5 µg/l | < 16 % * | Single value · Comune di San Siro Fontana Via S.Maria |
* 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.
Indicator parameters (15)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | < 10 µg/L below limit of quantification | 0.2 mg/l | < 5 % * | Single value · Comune di San Siro Fontana Via S.Maria |
| Ammonium | < 0.02 mg/L below limit of quantification | 0.5 mg/l | < 4 % * | Single value · Comune di San Siro Fontana Via S.Maria |
| Chloride | < 5 mg/L below limit of quantification | 250 mg/l | < 2 % * | Single value · Comune di San Siro Fontana Via S.Maria |
| Coliform bacteria | < 1 MPN/100ml below limit of quantification | 0/100 ml | — | Single value · Comune di San Siro Fontana Via S.Maria |
| Colony count 22 °C | 23 UFC/1ml | senza variazioni anomale | — | Single value · Comune di San Siro Fontana Via S.Maria |
| Colour | Accettabile | accettabile per i consumatori, senza variazioni anomale | — | Single value · Comune di San Siro Fontana Via S.Maria |
| Conductivity (25 °C) | < 84 µS/cm a 20°C below limit of quantification | 2,500 µS/cm | — | Single value · Comune di San Siro Fontana Via S.Maria |
| Iron | 11 µg/L | 0.2 mg/l | 5 % | Single value · Comune di San Siro Fontana Via S.Maria |
| Manganese | < 5 µg/L below limit of quantification | 50 µg/l | < 10 % * | Single value · Comune di San Siro Fontana Via S.Maria |
| Odour | Accettabile | accettabile per i consumatori, senza variazioni anomale | — | Single value · Comune di San Siro Fontana Via S.Maria |
| pH | 7.74 Unità pH | 6,5–9,5 | — | Single value · Comune di San Siro Fontana Via S.Maria |
| Sodium | < 15 mg/L below limit of quantification | 200 mg/l | < 8 % * | Single value · Comune di San Siro Fontana Via S.Maria |
| Sulphate | < 10 mg/L below limit of quantification | 250 mg/l | < 4 % * | Single value · Comune di San Siro Fontana Via S.Maria |
| Taste | Accettabile | accettabile per i consumatori, senza variazioni anomale | — | Single value · Comune di San Siro Fontana Via S.Maria |
| Turbidity | 0.28 NTU | accettabile per i consumatori, senza variazioni anomale | — | Single value · Comune di San Siro Fontana Via S.Maria |
* 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 (6)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | < 15 mg/L below limit of quantification | — | — | Single value · Comune di San Siro Fontana Via S.Maria |
| Dry residue | 51 mg/L | — | — | Single value · Comune di San Siro Fontana Via S.Maria |
| Magnesium | < 5 mg/L below limit of quantification | — | — | Single value · Comune di San Siro Fontana Via S.Maria |
| Potassium | < 5 mg/L below limit of quantification | — | — | Single value · Comune di San Siro Fontana Via S.Maria |
| Total hardness | 3 °F | — | — | Single value · Comune di San Siro Fontana Via S.Maria |
| Vanadium | < 10 µg/L below limit of quantification | 0.14 mg/l | < 7 % * | Single value · Comune di San Siro Fontana Via S.Maria |
* 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.
Source: https://comoacqua.it/qualita-acqua/ · 20 febbraio 2026 · Dati aggiornati al 20 febbraio 2026 · retrieved on 16/08/2026
How to read the share of the parametric value
12 % Share of the parametric value. The proportion of the permitted maximum that the measured value uses — here 12 %, so just over an eighth.
< 10 % * Below the limit of quantification. The substance was not detectable. The mark shows where the detection limit lies relative to the parametric value — the actual share of the parametric value is below that.
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).