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Italy · Comune

Drinking water in Ariccia

7 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 MONTE TONDO

ACEA ATO 2 S.p.A.
Water hardness
10.2 °dH
Key values ZONA 1 MONTE TONDO
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 1,44 mg/L NO3 50 mg/l
3 %
Median
Lead <0,20 µg/L Pb
below limit of quantification
 10 µg/l — Median
Escherichia coli (E. coli) Conforme MPN/100 mL 0/100 ml — Median
Sulphate 2,67 mg/L SO4 250 mg/l
1 %
Median
Sodium 20,2 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 1 MONTE TONDO
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 MONTE TONDO
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 2,70 µg/L As 10 µg/l
27 %
Median
Bisphenol A <0,25 µg/L
below limit of quantification
 2.5 µg/l
< 10 % *
Median
Boron 0,042 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 0,51 mg/L 1.5 mg/l
34 %
Median
Haloacetic acids (HAA) - µg/L
not determined
 60 µg/l — Median
Lead <0,20 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 1,44 mg/L NO3 50 mg/l
3 %
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 2,70 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 MONTE TONDO
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 MONTE TONDO
Parameter Value Parametric value Share of the parametric value Reference
Aluminium 8,8 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 8,1 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) 475 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 7,25 pH 6,5–9,5 — Median
Sodium 20,2 mg/L Na 200 mg/l
10 %
Median
Sulphate 2,67 mg/L SO4 250 mg/l
1 %
Median
Taste 0 tasso diluz. accettabile per i consumatori, senza variazioni anomale — Median
Temperature 13,5 °C — — Median
Total organic carbon (TOC) 0,30 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 MONTE TONDO
Parameter Value Parametric value Share of the parametric value Reference
Free chlorine 0,23 mg/L Cl2 — — Median

Further parameters (13)

Further parameters – ZONA 1 MONTE TONDO
Parameter Value Parametric value Share of the parametric value Reference
Acid capacity to pH 4.3 252 mg/L CaCO3 — — Median
Beryllium 0,34 µg/L Be — — Median
Bromide <50 µg/L Br
below limit of quantification
 — — Median
Calcium 54,55 mg/L Ca — — Median
Dry residue 339 mg/L — — Median
Hydrogen carbonate 307 mg/L HCO3 — — Median
Magnesium 13,45 mg/L Mg — — Median
Phosphate 207 µg/L P2O5 — — Median
Potassium 28,50 mg/L K — — Median
Silicate / silicic acid 19,6 mg/L SiO2 — — Median
Thallium <0,2 µg/L Tl
below limit of quantification
 — — Median
Total hardness 18,3 °F — — Median
Vanadium 2,20 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/ariccia_zona_1_monte_tondo.pdf · luglio 2026 · luglio 2026 · retrieved on 08/07/2026

ZONA 2 MONTE GENTILE

ACEA ATO 2 S.p.A.
Water hardness
9.7 °dH
Key values ZONA 2 MONTE GENTILE
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 1,43 mg/L NO3 50 mg/l
3 %
Median
Lead <0,20 µg/L Pb
below limit of quantification
 10 µg/l — Median
Escherichia coli (E. coli) Conforme MPN/100 mL 0/100 ml — Median
Sulphate 2,145 mg/L SO4 250 mg/l
0.9 %
Median
Sodium 2,4 mg/L Na 200 mg/l
1 %
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 MONTE GENTILE
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 MONTE GENTILE
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 <1,0 µg/L As
below limit of quantification
 10 µg/l
< 10 % *
Median
Bisphenol A <0,25 µg/L
below limit of quantification
 2.5 µg/l
< 10 % *
Median
Boron <0,02 mg/L B
below limit of quantification
 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 0,10 mg/L 1.5 mg/l
7 %
Median
Haloacetic acids (HAA) - µg/L
not determined
 60 µg/l — Median
Lead <0,20 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 1,43 mg/L NO3 50 mg/l
3 %
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 2 MONTE GENTILE
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 MONTE GENTILE
Parameter Value Parametric value Share of the parametric value Reference
Aluminium 5,9 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 4,2 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) 300 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 8,00 pH 6,5–9,5 — Median
Sodium 2,4 mg/L Na 200 mg/l
1 %
Median
Sulphate 2,145 mg/L SO4 250 mg/l
0.9 %
Median
Taste 0 tasso diluz. accettabile per i consumatori, senza variazioni anomale — Median
Temperature 13,0 °C — — Median
Total organic carbon (TOC) 0,58 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 MONTE GENTILE
Parameter Value Parametric value Share of the parametric value Reference
Free chlorine 0,21 mg/L Cl2 — — Median

Further parameters (13)

Further parameters – ZONA 2 MONTE GENTILE
Parameter Value Parametric value Share of the parametric value Reference
Acid capacity to pH 4.3 194 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 54,25 mg/L Ca — — Median
Dry residue 230,5 mg/L — — Median
Hydrogen carbonate 236 mg/L HCO3 — — Median
Magnesium 8,38 mg/L Mg — — Median
Phosphate <50 µg/L P2O5
below limit of quantification
 — — Median
Potassium 0,50 mg/L K — — Median
Silicate / silicic acid 2,3 mg/L SiO2 — — Median
Thallium <0,2 µg/L Tl
below limit of quantification
 — — Median
Total hardness 17,3 °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/ariccia_zona_2_monte_gentile.pdf · luglio 2026 · luglio 2026 · retrieved on 08/07/2026

Zona 3 Lega Latina - Comune di Ariccia

ACEA ATO 2 S.p.A.
Water hardness
12.7 °dH
Key values Zona 3 Lega Latina - Comune di Ariccia
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 2,72 mg/L NO3 50 mg/l
5 %
Median
Lead <0,20 µg/L Pb
below limit of quantification
 10 µg/l — Median
Escherichia coli (E. coli) Conforme MPN/100 mL 0/100 ml — Median
Sulphate 8,595 mg/L SO4 250 mg/l
3 %
Median
Sodium 26,2 mg/L Na 200 mg/l
13 %
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 Lega Latina - Comune di Ariccia
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 Lega Latina - Comune di Ariccia
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 2,05 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 0,077 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 <0,20 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 2,72 mg/L NO3 50 mg/l
5 %
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 13,35 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 Lega Latina - Comune di Ariccia
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 Lega Latina - Comune di Ariccia
Parameter Value Parametric value Share of the parametric value Reference
Aluminium 5,0 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 10,7 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) 579 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 7,15 pH 6,5–9,5 — Median
Sodium 26,2 mg/L Na 200 mg/l
13 %
Median
Sulphate 8,595 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) 1,47 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 Lega Latina - Comune di Ariccia
Parameter Value Parametric value Share of the parametric value Reference
Free chlorine 0,22 mg/L Cl2 — — Median

Further parameters (13)

Further parameters – Zona 3 Lega Latina - Comune di Ariccia
Parameter Value Parametric value Share of the parametric value Reference
Acid capacity to pH 4.3 313 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 64,75 mg/L Ca — — Median
Dry residue 413,5 mg/L — — Median
Hydrogen carbonate 381 mg/L HCO3 — — Median
Magnesium 16,30 mg/L Mg — — Median
Phosphate 346 µg/L P2O5 — — Median
Potassium 40,00 mg/L K — — Median
Silicate / silicic acid 36,9 mg/L SiO2 — — Median
Thallium <0,2 µg/L Tl
below limit of quantification
 — — Median
Total hardness 22,7 °F — — Median
Vanadium 2,25 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/ariccia_zona_3_lega_latina.pdf · luglio 2026 · luglio 2026 · retrieved on 08/07/2026

ZONA 4 FONTANACCIO

ACEA ATO 2 S.p.A.
Water hardness
9.5 °dH
Key values ZONA 4 FONTANACCIO
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 11,75 mg/L NO3 50 mg/l
24 %
Median
Lead <0,20 µg/L Pb
below limit of quantification
 10 µg/l — Median
Escherichia coli (E. coli) Conforme MPN/100 mL 0/100 ml — Median
Sulphate 17,7 mg/L SO4 250 mg/l
7 %
Median
Sodium 29,5 mg/L Na 200 mg/l
15 %
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 FONTANACCIO
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 FONTANACCIO
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 4,30 µg/L As 10 µg/l
43 %
Median
Bisphenol A <0,25 µg/L
below limit of quantification
 2.5 µg/l
< 10 % *
Median
Boron 0,104 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 1,07 mg/L 1.5 mg/l
71 %
Median
Haloacetic acids (HAA) - µg/L
not determined
 60 µg/l — Median
Lead <0,20 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 11,75 mg/L NO3 50 mg/l
24 %
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 9,39 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 FONTANACCIO
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 FONTANACCIO
Parameter Value Parametric value Share of the parametric value Reference
Aluminium 2,6 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 18,0 mg/L Cl 250 mg/l
7 %
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) 523 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 29,5 mg/L Na 200 mg/l
15 %
Median
Sulphate 17,7 mg/L SO4 250 mg/l
7 %
Median
Taste 0 tasso diluz. accettabile per i consumatori, senza variazioni anomale — Median
Temperature 14,5 °C — — Median
Total organic carbon (TOC) 0,45 mg/L C senza variazioni anomale — Median
Turbidity 0,50 NTU 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 FONTANACCIO
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 FONTANACCIO
Parameter Value Parametric value Share of the parametric value Reference
Acid capacity to pH 4.3 246 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 46,20 mg/L Ca — — Median
Dry residue 373,5 mg/L — — Median
Hydrogen carbonate 300 mg/L HCO3 — — Median
Magnesium 12,90 mg/L Mg — — Median
Phosphate 504 µg/L P2O5 — — Median
Potassium 46,00 mg/L K — — Median
Silicate / silicic acid 57,5 mg/L SiO2 — — Median
Thallium <0,2 µg/L Tl
below limit of quantification
 — — Median
Total hardness 16,9 °F — — Median
Vanadium 44,87 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/ariccia_zona_4_fontanaccio.pdf · luglio 2026 · luglio 2026 · retrieved on 08/07/2026

ZONA 5 CERQUETTE

ACEA ATO 2 S.p.A.
Water hardness
8.8 °dH
Key values ZONA 5 CERQUETTE
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 2,59 mg/L NO3 50 mg/l
5 %
Median
Lead <0,20 µg/L Pb
below limit of quantification
 10 µg/l — Median
Escherichia coli (E. coli) Conforme MPN/100 mL 0/100 ml — Median
Sulphate 7,805 mg/L SO4 250 mg/l
3 %
Median
Sodium 15,0 mg/L Na 200 mg/l
8 %
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 CERQUETTE
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 CERQUETTE
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 5,65 µg/L As 10 µg/l
56 %
Median
Bisphenol A <0,25 µg/L
below limit of quantification
 2.5 µg/l
< 10 % *
Median
Boron 0,074 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 0,85 mg/L 1.5 mg/l
57 %
Median
Haloacetic acids (HAA) - µg/L
not determined
 60 µg/l — Median
Lead <0,20 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 2,59 mg/L NO3 50 mg/l
5 %
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 5 CERQUETTE
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 CERQUETTE
Parameter Value Parametric value Share of the parametric value Reference
Aluminium 5,0 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 9,4 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) 379 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 7,60 pH 6,5–9,5 — Median
Sodium 15,0 mg/L Na 200 mg/l
8 %
Median
Sulphate 7,805 mg/L SO4 250 mg/l
3 %
Median
Taste 0 tasso diluz. accettabile per i consumatori, senza variazioni anomale — Median
Temperature 13,5 °C — — Median
Total organic carbon (TOC) 0,48 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 CERQUETTE
Parameter Value Parametric value Share of the parametric value Reference
Free chlorine 0,22 mg/L Cl2 — — Median

Further parameters (13)

Further parameters – ZONA 5 CERQUETTE
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 45,80 mg/L Ca — — Median
Dry residue 271 mg/L — — Median
Hydrogen carbonate 245 mg/L HCO3 — — Median
Magnesium 10,45 mg/L Mg — — Median
Phosphate 193 µg/L P2O5 — — Median
Potassium 20,00 mg/L K — — Median
Silicate / silicic acid 18,1 mg/L SiO2 — — Median
Thallium <0,2 µg/L Tl
below limit of quantification
 — — Median
Total hardness 15,7 °F — — Median
Vanadium 23,95 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/ariccia_zona_5_cerquette.pdf · luglio 2026 · luglio 2026 · retrieved on 08/07/2026

ZONA 6 ORSINI

ACEA ATO 2 S.p.A.
Water hardness
14.6 °dH
Key values ZONA 6 ORSINI
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 6,59 mg/L NO3 50 mg/l
13 %
Median
Lead <0,20 µg/L Pb
below limit of quantification
 10 µg/l — Median
Escherichia coli (E. coli) Conforme MPN/100 mL 0/100 ml — Median
Sulphate 11,5 mg/L SO4 250 mg/l
5 %
Median
Sodium 17,8 mg/L Na 200 mg/l
9 %
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 ORSINI
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 ORSINI
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 4,20 µg/L As 10 µg/l
42 %
Median
Bisphenol A <0,25 µg/L
below limit of quantification
 2.5 µg/l
< 10 % *
Median
Boron 0,059 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 0,55 mg/L 1.5 mg/l
37 %
Median
Haloacetic acids (HAA) - µg/L
not determined
 60 µg/l — Median
Lead <0,20 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 6,59 mg/L NO3 50 mg/l
13 %
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 2,90 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 6 ORSINI
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 ORSINI
Parameter Value Parametric value Share of the parametric value Reference
Aluminium 9,0 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) 553 µS/cm 2,500 µS/cm — Median
Iron 9,5 µg/L Fe 0.2 mg/l — Median
Manganese 0,60 µg/L Mn 50 µg/l — Median
Odour 0 Diluiz. 25 accettabile per i consumatori, senza variazioni anomale — Median
pH 7,40 pH 6,5–9,5 — Median
Sodium 17,8 mg/L Na 200 mg/l
9 %
Median
Sulphate 11,5 mg/L SO4 250 mg/l
5 %
Median
Taste 0 tasso diluz. accettabile per i consumatori, senza variazioni anomale — Median
Temperature 14,0 °C — — Median
Total organic carbon (TOC) 0,58 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 ORSINI
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 ORSINI
Parameter Value Parametric value Share of the parametric value Reference
Acid capacity to pH 4.3 309 mg/L CaCO3 — — Median
Beryllium 0,34 µg/L Be — — Median
Bromide <50 µg/L Br
below limit of quantification
 — — Median
Calcium 73,20 mg/L Ca — — Median
Dry residue 395 mg/L — — Median
Hydrogen carbonate 377 mg/L HCO3 — — Median
Magnesium 19,00 mg/L Mg — — Median
Phosphate 139 µg/L P2O5 — — Median
Potassium 20,10 mg/L K — — Median
Silicate / silicic acid 16,0 mg/L SiO2 — — Median
Thallium <0,2 µg/L Tl
below limit of quantification
 — — Median
Total hardness 26,1 °F — — Median
Vanadium 3,68 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/ariccia_zona_6_orsini.pdf · luglio 2026 · luglio 2026 · retrieved on 08/07/2026

ZONA 7 GINESTRETO

ACEA ATO 2 S.p.A.
Water hardness
17.5 °dH
Key values ZONA 7 GINESTRETO
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 5,77 mg/L NO3 50 mg/l
12 %
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 7,765 mg/L SO4 250 mg/l
3 %
Median
Sodium 7,1 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 7 GINESTRETO
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 7 GINESTRETO
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 1,75 µg/L As 10 µg/l
18 %
Median
Bisphenol A <0,25 µg/L
below limit of quantification
 2.5 µg/l
< 10 % *
Median
Boron 0,076 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 0,20 mg/L 1.5 mg/l
13 %
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 5,77 mg/L NO3 50 mg/l
12 %
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 3,10 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 7 GINESTRETO
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 7 GINESTRETO
Parameter Value Parametric value Share of the parametric value Reference
Aluminium 9,2 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 7,8 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) 545 µS/cm 2,500 µS/cm — Median
Iron 15,4 µg/L Fe 0.2 mg/l — Median
Manganese 0,95 µg/L Mn 50 µg/l — Median
Odour 0 Diluiz. 25 accettabile per i consumatori, senza variazioni anomale — Median
pH 7,60 pH 6,5–9,5 — Median
Sodium 7,1 mg/L Na 200 mg/l
4 %
Median
Sulphate 7,765 mg/L SO4 250 mg/l
3 %
Median
Taste 0 tasso diluz. accettabile per i consumatori, senza variazioni anomale — Median
Temperature 13,0 °C — — Median
Total organic carbon (TOC) 0,30 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 7 GINESTRETO
Parameter Value Parametric value Share of the parametric value Reference
Free chlorine 0,26 mg/L Cl2 — — Median

Further parameters (13)

Further parameters – ZONA 7 GINESTRETO
Parameter Value Parametric value Share of the parametric value Reference
Acid capacity to pH 4.3 318 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 87,50 mg/L Ca — — Median
Dry residue 390 mg/L — — Median
Hydrogen carbonate 388 mg/L HCO3 — — Median
Magnesium 22,60 mg/L Mg — — Median
Phosphate 72 µg/L P2O5 — — Median
Potassium 6,33 mg/L K — — Median
Silicate / silicic acid 12,3 mg/L SiO2 — — Median
Thallium <0,2 µg/L Tl
below limit of quantification
 — — Median
Total hardness 31,2 °F — — Median
Vanadium 5,15 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/ariccia_zona_7_ginestreto.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).