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Italy · Comune

Drinking water in Cave

3 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).

Water hardness
14 °dH
Key values ZONA 1 TOCE
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 8,42 mg/L NO3 50 mg/l
17 %
Median
Lead <2,0 µg/L Pb
below limit of quantification
10 µg/l Median
Escherichia coli (E. coli) Conforme MPN/100 mL 0/100 ml Median
Sulphate 6,05 mg/L SO4 250 mg/l
2 %
Median
Sodium 6,9 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 1 TOCE
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 TOCE
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 0,029 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 0,13 mg/L 1.5 mg/l
9 %
Median
Haloacetic acids (HAA) - µg/L
not determined
60 µg/l Median
Lead <2,0 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 8,42 mg/L NO3 50 mg/l
17 %
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 1,50 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 TOCE
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 TOCE
Parameter Value Parametric value Share of the parametric value Reference
Aluminium 4,5 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 8,3 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) 459 µS/cm 2,500 µS/cm Median
Iron 12,1 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 7,50 pH 6,5–9,5 Median
Sodium 6,9 mg/L Na 200 mg/l
3 %
Median
Sulphate 6,05 mg/L SO4 250 mg/l
2 %
Median
Taste 0 tasso diluz. accettabile per i consumatori, senza variazioni anomale Median
Temperature 13,0 °C Median
Total organic carbon (TOC) 1,50 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 TOCE
Parameter Value Parametric value Share of the parametric value Reference
Free chlorine 0,16 mg/L Cl2 Median

Further parameters (13)

Further parameters – ZONA 1 TOCE
Parameter Value Parametric value Share of the parametric value Reference
Acid capacity to pH 4.3 259 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 76,80 mg/L Ca Median
Dry residue 328 mg/L Median
Hydrogen carbonate 316 mg/L HCO3 Median
Magnesium 13,70 mg/L Mg Median
Phosphate 64 µg/L P2O5 Median
Potassium 6,28 mg/L K Median
Silicate / silicic acid 16,6 mg/L SiO2 Median
Thallium <0,2 µg/L Tl
below limit of quantification
Median
Total hardness 25,0 °F Median
Vanadium 8,00 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/cave_zona_1_toce.pdf · luglio 2026 · luglio 2026 · retrieved on 08/07/2026

ZONA 2 S. BARTOLOMEO, Comune di Cave

ACEA ATO 2 S.p.A.
Water hardness
10.3 °dH
Key values ZONA 2 S. BARTOLOMEO, Comune di Cave
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 1,33 mg/L NO3 50 mg/l
3 %
Median
Lead <2,0 µg/L Pb
below limit of quantification
10 µg/l Median
Escherichia coli (E. coli) Conforme MPN/100 mL 0/100 ml Median
Sulphate 2,095 mg/L SO4 250 mg/l
0.8 %
Median
Sodium 2,2 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 S. BARTOLOMEO, Comune di Cave
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 S. BARTOLOMEO, Comune di Cave
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 0,021 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 0,10 mg/L 1.5 mg/l
7 %
Median
Haloacetic acids (HAA) - µg/L
not determined
60 µg/l Median
Lead <2,0 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 1,33 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 S. BARTOLOMEO, Comune di Cave
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 S. BARTOLOMEO, Comune di Cave
Parameter Value Parametric value Share of the parametric value Reference
Aluminium 4,5 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 3,8 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) 314 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 7,90 pH 6,5–9,5 Median
Sodium 2,2 mg/L Na 200 mg/l
1 %
Median
Sulphate 2,095 mg/L SO4 250 mg/l
0.8 %
Median
Taste 0 tasso diluz. accettabile per i consumatori, senza variazioni anomale Median
Temperature 12,0 °C Median
Total organic carbon (TOC) 0,40 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 S. BARTOLOMEO, Comune di Cave
Parameter Value Parametric value Share of the parametric value Reference
Free chlorine 0,18 mg/L Cl2 Median

Further parameters (13)

Further parameters – ZONA 2 S. BARTOLOMEO, Comune di Cave
Parameter Value Parametric value Share of the parametric value Reference
Acid capacity to pH 4.3 202 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 51,40 mg/L Ca Median
Dry residue 241 mg/L Median
Hydrogen carbonate 246 mg/L HCO3 Median
Magnesium 13,35 mg/L Mg Median
Phosphate 65 µg/L P2O5 Median
Potassium 0,65 mg/L K Median
Silicate / silicic acid 4,4 mg/L SiO2 Median
Thallium <0,2 µg/L Tl
below limit of quantification
Median
Total hardness 18,4 °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.

Zona 3 Contrada Casali, Comune di Cave

ACEA ATO 2 S.p.A.
Water hardness
10.2 °dH
Key values Zona 3 Contrada Casali, Comune di Cave
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 1,18 mg/L NO3 50 mg/l
2 %
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 2,06 mg/L SO4 250 mg/l
0.8 %
Median
Sodium 2,2 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 3 Contrada Casali, Comune di Cave
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 Contrada Casali, Comune di Cave
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
below limit of quantification
1.5 mg/l
< 7 % *
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 1,18 mg/L NO3 50 mg/l
2 %
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 0,70 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 3 Contrada Casali, Comune di Cave
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 Contrada Casali, Comune di Cave
Parameter Value Parametric value Share of the parametric value Reference
Aluminium 7,1 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 4,0 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) 321 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 2,2 mg/L Na 200 mg/l
1 %
Median
Sulphate 2,06 mg/L SO4 250 mg/l
0.8 %
Median
Taste 0 tasso diluz. accettabile per i consumatori, senza variazioni anomale Median
Temperature 12,0 °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 3 Contrada Casali, Comune di Cave
Parameter Value Parametric value Share of the parametric value Reference
Free chlorine 0,18 mg/L Cl2 Median

Further parameters (13)

Further parameters – Zona 3 Contrada Casali, Comune di Cave
Parameter Value Parametric value Share of the parametric value Reference
Acid capacity to pH 4.3 206 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 51,20 mg/L Ca Median
Dry residue 240 mg/L Median
Hydrogen carbonate 251 mg/L HCO3 Median
Magnesium 13,40 mg/L Mg Median
Phosphate <50 µg/L P2O5
below limit of quantification
Median
Potassium 0,27 mg/L K Median
Silicate / silicic acid 1,6 mg/L SiO2 Median
Thallium <0,2 µg/L Tl
below limit of quantification
Median
Total hardness 18,3 °F Median
Vanadium <1,0 µg/L V
below limit of quantification
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.

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).