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Italy · Comune

Drinking water in Genzano di Roma

6 supply zones, published by ACEA ATO 2 S.p.A.. 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).

ZONA 1 LE PIAGGE

ACEA ATO 2 S.p.A.
Water hardness
10.3 °dH
Key values ZONA 1 LE PIAGGE
Parameter Value Parametric value Share of the parametric value Reference
Sum of PFAS <0,10 µg/L
below limit of quantification
 0.1 µg/l
< 100 % *
Median
Nitrate 2,99 mg/L NO3 50 mg/l
6 %
Median
Lead <0,2 µg/L Pb
below limit of quantification
 10 µg/l — Median
Escherichia coli (E. coli) Conforme MPN/100 mL 0/100 ml — Median
Sulphate 5,04 mg/L SO4 250 mg/l
2 %
Median
Sodium 8,9 mg/L Na 200 mg/l
4 %
Median

* 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 (61 — most recent value per parameter)

Microbiology (2)

Microbiology – ZONA 1 LE PIAGGE
Parameter Value Parametric value Share of the parametric value Reference
Escherichia coli (E. coli) Conforme MPN/100 mL 0/100 ml — Median
Intestinal enterococci Conforme N/100 mL 0/100 ml — Median

Chemical parameters (28)

Chemical parameters – ZONA 1 LE PIAGGE
Parameter Value Parametric value Share of the parametric value Reference
1,2-dichloroethane <0,1 µg/L
below limit of quantification
 3 µg/l
< 3 % *
Median
Acrylamide <0,03 µg/L
below limit of quantification
 0.1 µg/l
< 30 % *
Median
Antimony <1,0 µg/L Sb
below limit of quantification
 10 µg/l — Median
Arsenic 2,10 µg/L As 10 µg/l
21 %
Median
Bisphenol A <0,25 µg/L
below limit of quantification
 2.5 µg/l
< 10 % *
Median
Boron 0,046 mg/L B 1.5 mg/l — Median
Cadmium <0,2 µg/L Cd
below limit of quantification
 5 µg/l — Median
Chlorate <0,05 mg/L ClO3
below limit of quantification
 0,25 — bzw. 0,70 bei Desinfektion mit Chlordioxid — Median
Chlorite <0,05 mg/L ClO2
below limit of quantification
 0,25 — bzw. 0,70 bei Desinfektion mit Chlordioxid — Median
Chromium <5,0 µg/L Cr
below limit of quantification
 25 µg/l — Median
Copper 0,014 mg/L Cu 2 mg/l — Median
Cyanide <10 µg/L CN
below limit of quantification
 50 µg/l — Median
Epichlorohydrin <0,05 µg/L
below limit of quantification
 0.1 µg/l
< 50 % *
Median
Fluoride 0,21 mg/L 1.5 mg/l
14 %
Median
Haloacetic acids (HAA) - µg/L
not determined
 60 µg/l — Median
Lead <0,2 µg/L Pb
below limit of quantification
 10 µg/l — Median
Mercury <0,2 µg/L Hg
below limit of quantification
 1 µg/l — Median
Nickel <2,0 µg/L Ni
below limit of quantification
 20 µg/l — Median
Nitrate 2,99 mg/L NO3 50 mg/l
6 %
Median
Nitrite <0,05 mg/L NO2
below limit of quantification
 0.5 mg/l
< 10 % *
Median
Pesticides — Total - µg/L
not determined
 0.5 µg/l — Median
Polycyclic aromatic hydrocarbons - µg/L
not determined
 0.1 µg/l — Median
Selenium <1,0 µg/L Se
below limit of quantification
 20 µg/l — Median
Tetrachloroethene <1,0 µg/L
below limit of quantification
 — — Median
Trichloroethene <1,0 µg/L
below limit of quantification
 — — Median
Trihalomethanes — Total <1,0 µg/L
below limit of quantification
 30 µg/l
< 3 % *
Median
Uranium 6,10 µg/L U 30 µg/l — Median
Vinyl chloride <0,1 µg/L
below limit of quantification
 0.5 µg/l
< 20 % *
Median

* 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 (1)

PFAS – ZONA 1 LE PIAGGE
Parameter Value Parametric value Share of the parametric value Reference
Sum of PFAS <0,10 µg/L
below limit of quantification
 0.1 µg/l
< 100 % *
Median

* 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 (16)

Indicator parameters – ZONA 1 LE PIAGGE
Parameter Value Parametric value Share of the parametric value Reference
Aluminium 4,6 µg/L Al 0.2 mg/l — Median
Ammonium <0,1 mg/L NH4
below limit of quantification
 0.5 mg/l
< 20 % *
Median
Chloride 7,0 mg/L Cl 250 mg/l
3 %
Median
Coliform bacteria Conforme MPN/100 mL 0/100 ml — Median
Colour Incolore Scala Pt/C accettabile per i consumatori, senza variazioni anomale — Median
Conductivity (25 °C) 369 µS/cm 2,500 µS/cm — Median
Iron <5,0 µg/L Fe
below limit of quantification
 0.2 mg/l — Median
Manganese <0,2 µg/L Mn
below limit of quantification
 50 µg/l — Median
Odour 0 Diluiz. 25 accettabile per i consumatori, senza variazioni anomale — Median
pH 7,30 pH 6,5–9,5 — Median
Sodium 8,9 mg/L Na 200 mg/l
4 %
Median
Sulphate 5,04 mg/L SO4 250 mg/l
2 %
Median
Taste 0 tasso diluz. accettabile per i consumatori, senza variazioni anomale — Median
Temperature 12,0 °C — — Median
Total organic carbon (TOC) 0,33 mg/L C senza variazioni anomale — Median
Turbidity <0,5 NTU
below limit of quantification
 accettabile per i consumatori, senza variazioni anomale — Median

* 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.

Treatment substances (1)

Treatment substances – ZONA 1 LE PIAGGE
Parameter Value Parametric value Share of the parametric value Reference
Free chlorine 0,20 mg/L Cl2 — — Median

Further parameters (13)

Further parameters – ZONA 1 LE PIAGGE
Parameter Value Parametric value Share of the parametric value Reference
Acid capacity to pH 4.3 201 mg/L CaCO3 — — Median
Beryllium <0,2 µg/L Be
below limit of quantification
 — — Median
Bromide <50 µg/L Br
below limit of quantification
 — — Median
Calcium 56,20 mg/L Ca — — Median
Dry residue 264 mg/L — — Median
Hydrogen carbonate 245 mg/L HCO3 — — Median
Magnesium 10,90 mg/L Mg — — Median
Phosphate 139 µg/L P2O5 — — Median
Potassium 10,80 mg/L K — — Median
Silicate / silicic acid 18,4 mg/L SiO2 — — Median
Thallium <0,2 µg/L Tl
below limit of quantification
 — — Median
Total hardness 18,4 °F — — Median
Vanadium 10,50 µg/L V 0.14 mg/l — Median

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://www.aceaato2.a-acqua.it/content/dam/acea-ato2/pdf/it/mappe-qualita/genzano_di_roma_zona_1_le_piagge.pdf · luglio 2026 · luglio 2026 · retrieved on 08/07/2026

ZONA 2 ACHILLE GRANDI

ACEA ATO 2 S.p.A.
Water hardness
1.1 °dH
Key values ZONA 2 ACHILLE GRANDI
Parameter Value Parametric value Share of the parametric value Reference
Sum of PFAS <0,10 µg/L
below limit of quantification
 0.1 µg/l
< 100 % *
Median
Nitrate 7,43 mg/L NO3 50 mg/l
15 %
Median
Lead <0,2 µg/L Pb
below limit of quantification
 10 µg/l — Median
Escherichia coli (E. coli) Conforme MPN/100 mL 0/100 ml — Median
Sulphate 2,17 mg/L SO4 250 mg/l
0.9 %
Median
Sodium 6,2 mg/L Na 200 mg/l
3 %
Median

* 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 (61 — most recent value per parameter)

Microbiology (2)

Microbiology – ZONA 2 ACHILLE GRANDI
Parameter Value Parametric value Share of the parametric value Reference
Escherichia coli (E. coli) Conforme MPN/100 mL 0/100 ml — Median
Intestinal enterococci Conforme N/100 mL 0/100 ml — Median

Chemical parameters (28)

Chemical parameters – ZONA 2 ACHILLE GRANDI
Parameter Value Parametric value Share of the parametric value Reference
1,2-dichloroethane <0,1 µg/L
below limit of quantification
 3 µg/l
< 3 % *
Median
Acrylamide <0,03 µg/L
below limit of quantification
 0.1 µg/l
< 30 % *
Median
Antimony <1,0 µg/L Sb
below limit of quantification
 10 µg/l — Median
Arsenic 1,00 µg/L As 10 µg/l
10 %
Median
Bisphenol A <0,25 µg/L
below limit of quantification
 2.5 µg/l
< 10 % *
Median
Boron 0,300 mg/L B 1.5 mg/l — Median
Cadmium <0,2 µg/L Cd
below limit of quantification
 5 µg/l — Median
Chlorate <0,05 mg/L ClO3
below limit of quantification
 0,25 — bzw. 0,70 bei Desinfektion mit Chlordioxid — Median
Chlorite <0,05 mg/L ClO2
below limit of quantification
 0,25 — bzw. 0,70 bei Desinfektion mit Chlordioxid — Median
Chromium <5,0 µg/L Cr
below limit of quantification
 25 µg/l — Median
Copper <0,001 mg/L Cu
below limit of quantification
 2 mg/l — Median
Cyanide <10 µg/L CN
below limit of quantification
 50 µg/l — Median
Epichlorohydrin <0,05 µg/L
below limit of quantification
 0.1 µg/l
< 50 % *
Median
Fluoride 0,17 mg/L 1.5 mg/l
11 %
Median
Haloacetic acids (HAA) - µg/L
not determined
 60 µg/l — Median
Lead <0,2 µg/L Pb
below limit of quantification
 10 µg/l — Median
Mercury <0,2 µg/L Hg
below limit of quantification
 1 µg/l — Median
Nickel <2,0 µg/L Ni
below limit of quantification
 20 µg/l — Median
Nitrate 7,43 mg/L NO3 50 mg/l
15 %
Median
Nitrite <0,05 mg/L NO2
below limit of quantification
 0.5 mg/l
< 10 % *
Median
Pesticides — Total - µg/L
not determined
 0.5 µg/l — Median
Polycyclic aromatic hydrocarbons - µg/L
not determined
 0.1 µg/l — Median
Selenium <1,0 µg/L Se
below limit of quantification
 20 µg/l — Median
Tetrachloroethene <1,0 µg/L
below limit of quantification
 — — Median
Trichloroethene <1,0 µg/L
below limit of quantification
 — — Median
Trihalomethanes — Total <1,0 µg/L
below limit of quantification
 30 µg/l
< 3 % *
Median
Uranium 1,90 µg/L U 30 µg/l — Median
Vinyl chloride <0,1 µg/L
below limit of quantification
 0.5 µg/l
< 20 % *
Median

* 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 (1)

PFAS – ZONA 2 ACHILLE GRANDI
Parameter Value Parametric value Share of the parametric value Reference
Sum of PFAS <0,10 µg/L
below limit of quantification
 0.1 µg/l
< 100 % *
Median

* 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 (16)

Indicator parameters – ZONA 2 ACHILLE GRANDI
Parameter Value Parametric value Share of the parametric value Reference
Aluminium 2,1 µg/L Al 0.2 mg/l — Median
Ammonium <0,1 mg/L NH4
below limit of quantification
 0.5 mg/l
< 20 % *
Median
Chloride 3,9 mg/L Cl 250 mg/l
2 %
Median
Coliform bacteria Conforme MPN/100 mL 0/100 ml — Median
Colour Incolore Scala Pt/C accettabile per i consumatori, senza variazioni anomale — Median
Conductivity (25 °C) 72 µS/cm 2,500 µS/cm — Median
Iron <5,0 µg/L Fe
below limit of quantification
 0.2 mg/l — Median
Manganese <0,2 µg/L Mn
below limit of quantification
 50 µg/l — Median
Odour 0 Diluiz. 25 accettabile per i consumatori, senza variazioni anomale — Median
pH 7,30 pH 6,5–9,5 — Median
Sodium 6,2 mg/L Na 200 mg/l
3 %
Median
Sulphate 2,17 mg/L SO4 250 mg/l
0.9 %
Median
Taste 0 tasso diluz. accettabile per i consumatori, senza variazioni anomale — Median
Temperature 15,0 °C — — Median
Total organic carbon (TOC) 0,65 mg/L C senza variazioni anomale — Median
Turbidity <0,5 NTU
below limit of quantification
 accettabile per i consumatori, senza variazioni anomale — Median

* 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.

Treatment substances (1)

Treatment substances – ZONA 2 ACHILLE GRANDI
Parameter Value Parametric value Share of the parametric value Reference
Free chlorine 0,20 mg/L Cl2 — — Median

Further parameters (13)

Further parameters – ZONA 2 ACHILLE GRANDI
Parameter Value Parametric value Share of the parametric value Reference
Acid capacity to pH 4.3 36 mg/L CaCO3 — — Median
Beryllium 0,50 µg/L Be — — Median
Bromide <50 µg/L Br
below limit of quantification
 — — Median
Calcium 5,03 mg/L Ca — — Median
Dry residue 84 mg/L — — Median
Hydrogen carbonate 44 mg/L HCO3 — — Median
Magnesium 1,55 mg/L Mg — — Median
Phosphate 235 µg/L P2O5 — — Median
Potassium 7,13 mg/L K — — Median
Silicate / silicic acid 49,4 mg/L SiO2 — — Median
Thallium <0,2 µg/L Tl
below limit of quantification
 — — Median
Total hardness 1,9 °F — — Median
Vanadium 2,60 µg/L V 0.14 mg/l — Median

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://www.aceaato2.a-acqua.it/content/dam/acea-ato2/pdf/it/mappe-qualita/genzano_di_roma_zona_2_achille_grandi.pdf · luglio 2026 · luglio 2026 · retrieved on 08/07/2026

Zona 3 Firenze

ACEA ATO 2 S.p.A.
Water hardness
1.9 °dH
Key values Zona 3 Firenze
Parameter Value Parametric value Share of the parametric value Reference
Sum of PFAS <0,10 µg/L
below limit of quantification
 0.1 µg/l
< 100 % *
Median
Nitrate 17,65 mg/L NO3 50 mg/l
35 %
Median
Lead <0,2 µg/L Pb
below limit of quantification
 10 µg/l — Median
Escherichia coli (E. coli) Conforme MPN/100 mL 0/100 ml — Median
Sulphate 3,81 mg/L SO4 250 mg/l
2 %
Median
Sodium 13,6 mg/L Na 200 mg/l
7 %
Median

* 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 (61 — most recent value per parameter)

Microbiology (2)

Microbiology – Zona 3 Firenze
Parameter Value Parametric value Share of the parametric value Reference
Escherichia coli (E. coli) Conforme MPN/100 mL 0/100 ml — Median
Intestinal enterococci Conforme N/100 mL 0/100 ml — Median

Chemical parameters (28)

Chemical parameters – Zona 3 Firenze
Parameter Value Parametric value Share of the parametric value Reference
1,2-dichloroethane <0,1 µg/L
below limit of quantification
 3 µg/l
< 3 % *
Median
Acrylamide <0,03 µg/L
below limit of quantification
 0.1 µg/l
< 30 % *
Median
Antimony <1,0 µg/L Sb
below limit of quantification
 10 µg/l — Median
Arsenic 3,40 µg/L As 10 µg/l
34 %
Median
Bisphenol A <0,25 µg/L
below limit of quantification
 2.5 µg/l
< 10 % *
Median
Boron 0,202 mg/L B 1.5 mg/l — Median
Cadmium <0,2 µg/L Cd
below limit of quantification
 5 µg/l — Median
Chlorate <0,05 mg/L ClO3
below limit of quantification
 0,25 — bzw. 0,70 bei Desinfektion mit Chlordioxid — Median
Chlorite <0,05 mg/L ClO2
below limit of quantification
 0,25 — bzw. 0,70 bei Desinfektion mit Chlordioxid — Median
Chromium <5,0 µg/L Cr
below limit of quantification
 25 µg/l — Median
Copper <0,001 mg/L Cu
below limit of quantification
 2 mg/l — Median
Cyanide <10 µg/L CN
below limit of quantification
 50 µg/l — Median
Epichlorohydrin <0,05 µg/L
below limit of quantification
 0.1 µg/l
< 50 % *
Median
Fluoride 0,54 mg/L 1.5 mg/l
36 %
Median
Haloacetic acids (HAA) - µg/L
not determined
 60 µg/l — Median
Lead <0,2 µg/L Pb
below limit of quantification
 10 µg/l — Median
Mercury <0,2 µg/L Hg
below limit of quantification
 1 µg/l — Median
Nickel <2,0 µg/L Ni
below limit of quantification
 20 µg/l — Median
Nitrate 17,65 mg/L NO3 50 mg/l
35 %
Median
Nitrite <0,05 mg/L NO2
below limit of quantification
 0.5 mg/l
< 10 % *
Median
Pesticides — Total - µg/L
not determined
 0.5 µg/l — Median
Polycyclic aromatic hydrocarbons - µg/L
not determined
 0.1 µg/l — Median
Selenium <1,0 µg/L Se
below limit of quantification
 20 µg/l — Median
Tetrachloroethene <1,0 µg/L
below limit of quantification
 — — Median
Trichloroethene <1,0 µg/L
below limit of quantification
 — — Median
Trihalomethanes — Total <1,0 µg/L
below limit of quantification
 30 µg/l
< 3 % *
Median
Uranium 8,55 µg/L U 30 µg/l — Median
Vinyl chloride <0,1 µg/L
below limit of quantification
 0.5 µg/l
< 20 % *
Median

* 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 (1)

PFAS – Zona 3 Firenze
Parameter Value Parametric value Share of the parametric value Reference
Sum of PFAS <0,10 µg/L
below limit of quantification
 0.1 µg/l
< 100 % *
Median

* 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 (16)

Indicator parameters – Zona 3 Firenze
Parameter Value Parametric value Share of the parametric value Reference
Aluminium 2,3 µg/L Al 0.2 mg/l — Median
Ammonium <0,1 mg/L NH4
below limit of quantification
 0.5 mg/l
< 20 % *
Median
Chloride 8,4 mg/L Cl 250 mg/l
3 %
Median
Coliform bacteria Conforme MPN/100 mL 0/100 ml — Median
Colour Incolore Scala Pt/C accettabile per i consumatori, senza variazioni anomale — Median
Conductivity (25 °C) 166 µS/cm 2,500 µS/cm — Median
Iron 30,7 µg/L Fe 0.2 mg/l — Median
Manganese <0,2 µg/L Mn
below limit of quantification
 50 µg/l — Median
Odour 0 Diluiz. 25 accettabile per i consumatori, senza variazioni anomale — Median
pH 7,45 pH 6,5–9,5 — Median
Sodium 13,6 mg/L Na 200 mg/l
7 %
Median
Sulphate 3,81 mg/L SO4 250 mg/l
2 %
Median
Taste 0 tasso diluz. accettabile per i consumatori, senza variazioni anomale — Median
Temperature 15,0 °C — — Median
Total organic carbon (TOC) 0,37 mg/L C senza variazioni anomale — Median
Turbidity <0,5 NTU
below limit of quantification
 accettabile per i consumatori, senza variazioni anomale — Median

* 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.

Treatment substances (1)

Treatment substances – Zona 3 Firenze
Parameter Value Parametric value Share of the parametric value Reference
Free chlorine 0,20 mg/L Cl2 — — Median

Further parameters (13)

Further parameters – Zona 3 Firenze
Parameter Value Parametric value Share of the parametric value Reference
Acid capacity to pH 4.3 60 mg/L CaCO3 — — Median
Beryllium <0,2 µg/L Be
below limit of quantification
 — — Median
Bromide <50 µg/L Br
below limit of quantification
 — — Median
Calcium 9,36 mg/L Ca — — Median
Dry residue 150,5 mg/L — — Median
Hydrogen carbonate 74 mg/L HCO3 — — Median
Magnesium 2,66 mg/L Mg — — Median
Phosphate <50 µg/L P2O5
below limit of quantification
 — — Median
Potassium 15,75 mg/L K — — Median
Silicate / silicic acid 22,2 mg/L SiO2 — — Median
Thallium <0,2 µg/L Tl
below limit of quantification
 — — Median
Total hardness 3,4 °F — — Median
Vanadium 6,75 µg/L V 0.14 mg/l — Median

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://www.aceaato2.a-acqua.it/content/dam/acea-ato2/pdf/it/mappe-qualita/genzano_di_roma_zona_3_firenze.pdf · luglio 2026 · luglio 2026 · retrieved on 08/07/2026

Zona 4 167

ACEA ATO 2 S.p.A.
Water hardness
4.3 °dH
Key values Zona 4 167
Parameter Value Parametric value Share of the parametric value Reference
Sum of PFAS <0,10 µg/L
below limit of quantification
 0.1 µg/l
< 100 % *
Median
Nitrate 3,89 mg/L NO3 50 mg/l
8 %
Median
Lead <0,2 µg/L Pb
below limit of quantification
 10 µg/l — Median
Escherichia coli (E. coli) Conforme MPN/100 mL 0/100 ml — Median
Sulphate 4,61 mg/L SO4 250 mg/l
2 %
Median
Sodium 19,3 mg/L Na 200 mg/l
10 %
Median

* 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 (61 — most recent value per parameter)

Microbiology (2)

Microbiology – Zona 4 167
Parameter Value Parametric value Share of the parametric value Reference
Escherichia coli (E. coli) Conforme MPN/100 mL 0/100 ml — Median
Intestinal enterococci Conforme N/100 mL 0/100 ml — Median

Chemical parameters (28)

Chemical parameters – Zona 4 167
Parameter Value Parametric value Share of the parametric value Reference
1,2-dichloroethane <0,1 µg/L
below limit of quantification
 3 µg/l
< 3 % *
Median
Acrylamide <0,03 µg/L
below limit of quantification
 0.1 µg/l
< 30 % *
Median
Antimony <1,0 µg/L Sb
below limit of quantification
 10 µg/l — Median
Arsenic 1,00 µg/L As 10 µg/l
10 %
Median
Bisphenol A <0,25 µg/L
below limit of quantification
 2.5 µg/l
< 10 % *
Median
Boron 0,054 mg/L B 1.5 mg/l — Median
Cadmium <0,2 µg/L Cd
below limit of quantification
 5 µg/l — Median
Chlorate <0,05 mg/L ClO3
below limit of quantification
 0,25 — bzw. 0,70 bei Desinfektion mit Chlordioxid — Median
Chlorite <0,05 mg/L ClO2
below limit of quantification
 0,25 — bzw. 0,70 bei Desinfektion mit Chlordioxid — Median
Chromium <5,0 µg/L Cr
below limit of quantification
 25 µg/l — Median
Copper 0,001 mg/L Cu 2 mg/l — Median
Cyanide <10 µg/L CN
below limit of quantification
 50 µg/l — Median
Epichlorohydrin <0,05 µg/L
below limit of quantification
 0.1 µg/l
< 50 % *
Median
Fluoride 1,32 mg/L 1.5 mg/l
88 %
Median
Haloacetic acids (HAA) - µg/L
not determined
 60 µg/l — Median
Lead <0,2 µg/L Pb
below limit of quantification
 10 µg/l — Median
Mercury <0,2 µg/L Hg
below limit of quantification
 1 µg/l — Median
Nickel <2,0 µg/L Ni
below limit of quantification
 20 µg/l — Median
Nitrate 3,89 mg/L NO3 50 mg/l
8 %
Median
Nitrite <0,05 mg/L NO2
below limit of quantification
 0.5 mg/l
< 10 % *
Median
Pesticides — Total - µg/L
not determined
 0.5 µg/l — Median
Polycyclic aromatic hydrocarbons - µg/L
not determined
 0.1 µg/l — Median
Selenium <1,0 µg/L Se
below limit of quantification
 20 µg/l — Median
Tetrachloroethene <1,0 µg/L
below limit of quantification
 — — Median
Trichloroethene <1,0 µg/L
below limit of quantification
 — — Median
Trihalomethanes — Total <1,0 µg/L
below limit of quantification
 30 µg/l
< 3 % *
Median
Uranium 1,45 µg/L U 30 µg/l — Median
Vinyl chloride <0,1 µg/L
below limit of quantification
 0.5 µg/l
< 20 % *
Median

* 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 (1)

PFAS – Zona 4 167
Parameter Value Parametric value Share of the parametric value Reference
Sum of PFAS <0,10 µg/L
below limit of quantification
 0.1 µg/l
< 100 % *
Median

* 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 (16)

Indicator parameters – Zona 4 167
Parameter Value Parametric value Share of the parametric value Reference
Aluminium 4,0 µg/L Al 0.2 mg/l — Median
Ammonium <0,1 mg/L NH4
below limit of quantification
 0.5 mg/l
< 20 % *
Median
Chloride 9,7 mg/L Cl 250 mg/l
4 %
Median
Coliform bacteria Conforme MPN/100 mL 0/100 ml — Median
Colour Incolore Scala Pt/C accettabile per i consumatori, senza variazioni anomale — Median
Conductivity (25 °C) 283 µS/cm 2,500 µS/cm — Median
Iron 5,0 µg/L Fe 0.2 mg/l — Median
Manganese <0,2 µg/L Mn
below limit of quantification
 50 µg/l — Median
Odour 0 Diluiz. 25 accettabile per i consumatori, senza variazioni anomale — Median
pH 7,30 pH 6,5–9,5 — Median
Sodium 19,3 mg/L Na 200 mg/l
10 %
Median
Sulphate 4,61 mg/L SO4 250 mg/l
2 %
Median
Taste 0 tasso diluz. accettabile per i consumatori, senza variazioni anomale — Median
Temperature 14,0 °C — — Median
Total organic carbon (TOC) 0,38 mg/L C senza variazioni anomale — Median
Turbidity <0,5 NTU
below limit of quantification
 accettabile per i consumatori, senza variazioni anomale — Median

* 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.

Treatment substances (1)

Treatment substances – Zona 4 167
Parameter Value Parametric value Share of the parametric value Reference
Free chlorine 0,22 mg/L Cl2 — — Median

Further parameters (13)

Further parameters – Zona 4 167
Parameter Value Parametric value Share of the parametric value Reference
Acid capacity to pH 4.3 137 mg/L CaCO3 — — Median
Beryllium <0,2 µg/L Be
below limit of quantification
 — — Median
Bromide <50 µg/L Br
below limit of quantification
 — — Median
Calcium 24,90 mg/L Ca — — Median
Dry residue 218 mg/L — — Median
Hydrogen carbonate 167 mg/L HCO3 — — Median
Magnesium 3,95 mg/L Mg — — Median
Phosphate <50 µg/L P2O5
below limit of quantification
 — — Median
Potassium 24,00 mg/L K — — Median
Silicate / silicic acid 16,1 mg/L SiO2 — — Median
Thallium <0,2 µg/L Tl
below limit of quantification
 — — Median
Total hardness 7,7 °F — — Median
Vanadium 1,05 µg/L V 0.14 mg/l — Median

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://www.aceaato2.a-acqua.it/content/dam/acea-ato2/pdf/it/mappe-qualita/genzano_di_roma_zona_4_167.pdf · luglio 2026 · luglio 2026 · retrieved on 08/07/2026

ZONA 5 DON STURZO

ACEA ATO 2 S.p.A.
Water hardness
0.4 °dH
Key values ZONA 5 DON STURZO
Parameter Value Parametric value Share of the parametric value Reference
Sum of PFAS <0,10 µg/L
below limit of quantification
 0.1 µg/l
< 100 % *
Median
Nitrate 3,00 mg/L NO3 50 mg/l
6 %
Median
Lead <0,2 µg/L Pb
below limit of quantification
 10 µg/l — Median
Escherichia coli (E. coli) Conforme MPN/100 mL 0/100 ml — Median
Sulphate 0,5 mg/L SO4 250 mg/l
0.2 %
Median
Sodium 3,2 mg/L Na 200 mg/l
2 %
Median

* 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 (61 — most recent value per parameter)

Microbiology (2)

Microbiology – ZONA 5 DON STURZO
Parameter Value Parametric value Share of the parametric value Reference
Escherichia coli (E. coli) Conforme MPN/100 mL 0/100 ml — Median
Intestinal enterococci Conforme N/100 mL 0/100 ml — Median

Chemical parameters (28)

Chemical parameters – ZONA 5 DON STURZO
Parameter Value Parametric value Share of the parametric value Reference
1,2-dichloroethane <0,1 µg/L
below limit of quantification
 3 µg/l
< 3 % *
Median
Acrylamide <0,03 µg/L
below limit of quantification
 0.1 µg/l
< 30 % *
Median
Antimony <1,0 µg/L Sb
below limit of quantification
 10 µg/l — Median
Arsenic 1,00 µg/L As 10 µg/l
10 %
Median
Bisphenol A <0,25 µg/L
below limit of quantification
 2.5 µg/l
< 10 % *
Median
Boron 0,160 mg/L B 1.5 mg/l — Median
Cadmium <0,2 µg/L Cd
below limit of quantification
 5 µg/l — Median
Chlorate <0,05 mg/L ClO3
below limit of quantification
 0,25 — bzw. 0,70 bei Desinfektion mit Chlordioxid — Median
Chlorite <0,05 mg/L ClO2
below limit of quantification
 0,25 — bzw. 0,70 bei Desinfektion mit Chlordioxid — Median
Chromium <5,0 µg/L Cr
below limit of quantification
 25 µg/l — Median
Copper <0,001 mg/L Cu
below limit of quantification
 2 mg/l — Median
Cyanide <10 µg/L CN
below limit of quantification
 50 µg/l — Median
Epichlorohydrin <0,05 µg/L
below limit of quantification
 0.1 µg/l
< 50 % *
Median
Fluoride 0,14 mg/L 1.5 mg/l
9 %
Median
Haloacetic acids (HAA) - µg/L
not determined
 60 µg/l — Median
Lead <0,2 µg/L Pb
below limit of quantification
 10 µg/l — Median
Mercury <0,2 µg/L Hg
below limit of quantification
 1 µg/l — Median
Nickel <2,0 µg/L Ni
below limit of quantification
 20 µg/l — Median
Nitrate 3,00 mg/L NO3 50 mg/l
6 %
Median
Nitrite <0,05 mg/L NO2
below limit of quantification
 0.5 mg/l
< 10 % *
Median
Pesticides — Total - µg/L
not determined
 0.5 µg/l — Median
Polycyclic aromatic hydrocarbons - µg/L
not determined
 0.1 µg/l — Median
Selenium <1,0 µg/L Se
below limit of quantification
 20 µg/l — Median
Tetrachloroethene <1,0 µg/L
below limit of quantification
 — — Median
Trichloroethene <1,0 µg/L
below limit of quantification
 — — Median
Trihalomethanes — Total <1,0 µg/L
below limit of quantification
 30 µg/l
< 3 % *
Median
Uranium 1,00 µg/L U 30 µg/l — Median
Vinyl chloride <0,1 µg/L
below limit of quantification
 0.5 µg/l
< 20 % *
Median

* 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 (1)

PFAS – ZONA 5 DON STURZO
Parameter Value Parametric value Share of the parametric value Reference
Sum of PFAS <0,10 µg/L
below limit of quantification
 0.1 µg/l
< 100 % *
Median

* 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 (16)

Indicator parameters – ZONA 5 DON STURZO
Parameter Value Parametric value Share of the parametric value Reference
Aluminium 2,9 µg/L Al 0.2 mg/l — Median
Ammonium <0,1 mg/L NH4
below limit of quantification
 0.5 mg/l
< 20 % *
Median
Chloride 1,9 mg/L Cl 250 mg/l
0.8 %
Median
Coliform bacteria Conforme MPN/100 mL 0/100 ml — Median
Colour Incolore Scala Pt/C accettabile per i consumatori, senza variazioni anomale — Median
Conductivity (25 °C) 31 µS/cm 2,500 µS/cm — Median
Iron 5,0 µg/L Fe 0.2 mg/l — Median
Manganese 0,20 µg/L Mn 50 µg/l — Median
Odour 0 Diluiz. 25 accettabile per i consumatori, senza variazioni anomale — Median
pH 7,75 pH 6,5–9,5 — Median
Sodium 3,2 mg/L Na 200 mg/l
2 %
Median
Sulphate 0,5 mg/L SO4 250 mg/l
0.2 %
Median
Taste 0 tasso diluz. accettabile per i consumatori, senza variazioni anomale — Median
Temperature 15,0 °C — — Median
Total organic carbon (TOC) 0,34 mg/L C senza variazioni anomale — Median
Turbidity <0,5 NTU
below limit of quantification
 accettabile per i consumatori, senza variazioni anomale — Median

* 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.

Treatment substances (1)

Treatment substances – ZONA 5 DON STURZO
Parameter Value Parametric value Share of the parametric value Reference
Free chlorine 0,20 mg/L Cl2 — — Median

Further parameters (13)

Further parameters – ZONA 5 DON STURZO
Parameter Value Parametric value Share of the parametric value Reference
Acid capacity to pH 4.3 20 mg/L CaCO3 — — Median
Beryllium <0,2 µg/L Be
below limit of quantification
 — — Median
Bromide <50 µg/L Br
below limit of quantification
 — — Median
Calcium 2,54 mg/L Ca — — Median
Dry residue 41,5 mg/L — — Median
Hydrogen carbonate 0 mg/L HCO3 — — Median
Magnesium 0,20 mg/L Mg — — Median
Phosphate 50 µg/L P2O5 — — Median
Potassium 3,23 mg/L K — — Median
Silicate / silicic acid 28,3 mg/L SiO2 — — Median
Thallium <0,2 µg/L Tl
below limit of quantification
 — — Median
Total hardness 0,7 °F — — Median
Vanadium 1,00 µg/L V 0.14 mg/l — Median

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://www.aceaato2.a-acqua.it/content/dam/acea-ato2/pdf/it/mappe-qualita/genzano_di_roma_zona_5_don_sturzo.pdf · luglio 2026 · luglio 2026 · retrieved on 08/07/2026

Zona 6 Palaggi

ACEA ATO 2 S.p.A.
Water hardness
4.5 °dH
Key values Zona 6 Palaggi
Parameter Value Parametric value Share of the parametric value Reference
Sum of PFAS <0,10 µg/L
below limit of quantification
 0.1 µg/l
< 100 % *
Median
Nitrate 10,20 mg/L NO3 50 mg/l
20 %
Median
Lead <0,2 µg/L Pb
below limit of quantification
 10 µg/l — Median
Escherichia coli (E. coli) Conforme MPN/100 mL 0/100 ml — Median
Sulphate 7,705 mg/L SO4 250 mg/l
3 %
Median
Sodium 22,9 mg/L Na 200 mg/l
11 %
Median

* 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 (61 — most recent value per parameter)

Microbiology (2)

Microbiology – Zona 6 Palaggi
Parameter Value Parametric value Share of the parametric value Reference
Escherichia coli (E. coli) Conforme MPN/100 mL 0/100 ml — Median
Intestinal enterococci Conforme N/100 mL 0/100 ml — Median

Chemical parameters (28)

Chemical parameters – Zona 6 Palaggi
Parameter Value Parametric value Share of the parametric value Reference
1,2-dichloroethane <0,1 µg/L
below limit of quantification
 3 µg/l
< 3 % *
Median
Acrylamide <0,03 µg/L
below limit of quantification
 0.1 µg/l
< 30 % *
Median
Antimony <1,0 µg/L Sb
below limit of quantification
 10 µg/l — Median
Arsenic 1,00 µg/L As 10 µg/l
10 %
Median
Bisphenol A <0,25 µg/L
below limit of quantification
 2.5 µg/l
< 10 % *
Median
Boron 0,052 mg/L B 1.5 mg/l — Median
Cadmium <0,2 µg/L Cd
below limit of quantification
 5 µg/l — Median
Chlorate <0,05 mg/L ClO3
below limit of quantification
 0,25 — bzw. 0,70 bei Desinfektion mit Chlordioxid — Median
Chlorite <0,05 mg/L ClO2
below limit of quantification
 0,25 — bzw. 0,70 bei Desinfektion mit Chlordioxid — Median
Chromium <5,0 µg/L Cr
below limit of quantification
 25 µg/l — Median
Copper <0,001 mg/L Cu
below limit of quantification
 2 mg/l — Median
Cyanide <10 µg/L CN
below limit of quantification
 50 µg/l — Median
Epichlorohydrin <0,05 µg/L
below limit of quantification
 0.1 µg/l
< 50 % *
Median
Fluoride 0,82 mg/L 1.5 mg/l
55 %
Median
Haloacetic acids (HAA) - µg/L
not determined
 60 µg/l — Median
Lead <0,2 µg/L Pb
below limit of quantification
 10 µg/l — Median
Mercury <0,2 µg/L Hg
below limit of quantification
 1 µg/l — Median
Nickel <2,0 µg/L Ni
below limit of quantification
 20 µg/l — Median
Nitrate 10,20 mg/L NO3 50 mg/l
20 %
Median
Nitrite <0,05 mg/L NO2
below limit of quantification
 0.5 mg/l
< 10 % *
Median
Pesticides — Total - µg/L
not determined
 0.5 µg/l — Median
Polycyclic aromatic hydrocarbons - µg/L
not determined
 0.1 µg/l — Median
Selenium <1,0 µg/L Se
below limit of quantification
 20 µg/l — Median
Tetrachloroethene <1,0 µg/L
below limit of quantification
 — — Median
Trichloroethene <1,0 µg/L
below limit of quantification
 — — Median
Trihalomethanes — Total <1,0 µg/L
below limit of quantification
 30 µg/l
< 3 % *
Median
Uranium 2,80 µg/L U 30 µg/l — Median
Vinyl chloride <0,1 µg/L
below limit of quantification
 0.5 µg/l
< 20 % *
Median

* 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 (1)

PFAS – Zona 6 Palaggi
Parameter Value Parametric value Share of the parametric value Reference
Sum of PFAS <0,10 µg/L
below limit of quantification
 0.1 µg/l
< 100 % *
Median

* 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 (16)

Indicator parameters – Zona 6 Palaggi
Parameter Value Parametric value Share of the parametric value Reference
Aluminium 2,1 µg/L Al 0.2 mg/l — Median
Ammonium <0,1 mg/L NH4
below limit of quantification
 0.5 mg/l
< 20 % *
Median
Chloride 15,4 mg/L Cl 250 mg/l
6 %
Median
Coliform bacteria Conforme MPN/100 mL 0/100 ml — Median
Colour Incolore Scala Pt/C accettabile per i consumatori, senza variazioni anomale — Median
Conductivity (25 °C) 305 µS/cm 2,500 µS/cm — Median
Iron <5,0 µg/L Fe
below limit of quantification
 0.2 mg/l — Median
Manganese <0,2 µg/L Mn
below limit of quantification
 50 µg/l — Median
Odour 0 Diluiz. 25 accettabile per i consumatori, senza variazioni anomale — Median
pH 7,00 pH 6,5–9,5 — Median
Sodium 22,9 mg/L Na 200 mg/l
11 %
Median
Sulphate 7,705 mg/L SO4 250 mg/l
3 %
Median
Taste 0 tasso diluz. accettabile per i consumatori, senza variazioni anomale — Median
Temperature 14,5 °C — — Median
Total organic carbon (TOC) 0,54 mg/L C senza variazioni anomale — Median
Turbidity <0,5 NTU
below limit of quantification
 accettabile per i consumatori, senza variazioni anomale — Median

* 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.

Treatment substances (1)

Treatment substances – Zona 6 Palaggi
Parameter Value Parametric value Share of the parametric value Reference
Free chlorine 0,22 mg/L Cl2 — — Median

Further parameters (13)

Further parameters – Zona 6 Palaggi
Parameter Value Parametric value Share of the parametric value Reference
Acid capacity to pH 4.3 126 mg/L CaCO3 — — Median
Beryllium <0,2 µg/L Be
below limit of quantification
 — — Median
Bromide <50 µg/L Br
below limit of quantification
 — — Median
Calcium 23,30 mg/L Ca — — Median
Dry residue 234 mg/L — — Median
Hydrogen carbonate 154 mg/L HCO3 — — Median
Magnesium 5,24 mg/L Mg — — Median
Phosphate 50 µg/L P2O5 — — Median
Potassium 27,20 mg/L K — — Median
Silicate / silicic acid 34,5 mg/L SiO2 — — Median
Thallium <0,2 µg/L Tl
below limit of quantification
 — — Median
Total hardness 8,0 °F — — Median
Vanadium 23,10 µg/L V 0.14 mg/l — Median

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://www.aceaato2.a-acqua.it/content/dam/acea-ato2/pdf/it/mappe-qualita/genzano_di_roma_zona_6_palaggi.pdf · luglio 2026 · luglio 2026 · retrieved on 08/07/2026

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).