Italy · Comune

Drinking water in Rignano Flaminio

5 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 San Sisinio

ACEA ATO 2 S.p.A.

Water hardness

28.6 °dH

Key values Zona 1 San Sisinio
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	0,50 mg/L NO3	50 mg/l	1 %	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	91,4 mg/L SO4	250 mg/l	37 %	Median
Sodium	32,8 mg/L Na	200 mg/l	16 %	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 San Sisinio
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 San Sisinio
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	5,40 µg/L As	10 µg/l	54 %	Median
Bisphenol A	<0,25 µg/L below limit of quantification	2.5 µg/l	< 10 % *	Median
Boron	0,142 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	0,99 mg/L	1.5 mg/l	66 %	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	0,50 mg/L NO3	50 mg/l	1 %	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	1,70 µg/L U	30 µg/l	—	Median
Vinyl chloride	<0,1 µg/L below limit of quantification	0.5 µg/l	< 20 % *	Median

PFAS (1)

PFAS – Zona 1 San Sisinio
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

Indicator parameters (16)

Indicator parameters – Zona 1 San Sisinio
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	44,1 mg/L Cl	250 mg/l	18 %	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)	944 µS/cm	2,500 µS/cm	—	Median
Iron	44,5 µg/L Fe	0.2 mg/l	—	Median
Manganese	0,70 µg/L Mn	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	32,8 mg/L Na	200 mg/l	16 %	Median
Sulphate	91,4 mg/L SO4	250 mg/l	37 %	Median
Taste	0 tasso diluz.	accettabile per i consumatori, senza variazioni anomale	—	Median
Temperature	15,0 °C	—	—	Median
Total organic carbon (TOC)	0,36 mg/L C	senza variazioni anomale	—	Median
Turbidity	<0,5 NTU below limit of quantification	accettabile per i consumatori, senza variazioni anomale	—	Median

Treatment substances (1)

Treatment substances – Zona 1 San Sisinio
Parameter	Value	Parametric value	Share of the parametric value	Reference
Free chlorine	0,24 mg/L Cl2	—	—	Median

Further parameters (13)

Further parameters – Zona 1 San Sisinio
Parameter	Value	Parametric value	Share of the parametric value	Reference
Acid capacity to pH 4.3	432 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	135,00 mg/L Ca	—	—	Median
Dry residue	719 mg/L	—	—	Median
Hydrogen carbonate	527 mg/L HCO3	—	—	Median
Magnesium	42,30 mg/L Mg	—	—	Median
Phosphate	<50 µg/L P2O5 below limit of quantification	—	—	Median
Potassium	8,95 mg/L K	—	—	Median
Silicate / silicic acid	39,4 mg/L SiO2	—	—	Median
Thallium	<0,20 µg/L Tl below limit of quantification	—	—	Median
Total hardness	51,1 °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/rignano_flaminio_zona_1_san_sisinio.pdf · luglio 2026 · luglio 2026 · retrieved on 08/07/2026

Zona 2 Monte Onorio

ACEA ATO 2 S.p.A.

Water hardness

10.5 °dH

Key values Zona 2 Monte Onorio
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	15,40 mg/L NO3	50 mg/l	31 %	Median
Lead	<0,2 µg/L Pb below limit of quantification	10 µg/l	—	Median
Escherichia coli (E. coli)	Conforme MPN/100 mL not detectable	0/100 ml	—	Median
Sulphate	18,6 mg/L SO4	250 mg/l	7 %	Median
Sodium	22,2 mg/L Na	200 mg/l	11 %	Median

Show all recorded parameters (61 — most recent value per parameter)

Microbiology (2)

Microbiology – Zona 2 Monte Onorio
Parameter	Value	Parametric value	Share of the parametric value	Reference
Escherichia coli (E. coli)	Conforme MPN/100 mL not detectable	0/100 ml	—	Median
Intestinal enterococci	Conforme N/100 mL not detectable	0/100 ml	—	Median

Chemical parameters (28)

Chemical parameters – Zona 2 Monte Onorio
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	8,00 µg/L As	10 µg/l	80 %	Median
Bisphenol A	<0,25 µg/L below limit of quantification	2.5 µg/l	< 10 % *	Median
Boron	0,066 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	0,80 mg/L	1.5 mg/l	53 %	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	15,40 mg/L NO3	50 mg/l	31 %	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	2,8 µg/L	30 µg/l	9 %	Median
Uranium	3,70 µg/L U	30 µg/l	—	Median
Vinyl chloride	<0,1 µg/L below limit of quantification	0.5 µg/l	< 20 % *	Median

PFAS (1)

PFAS – Zona 2 Monte Onorio
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

Indicator parameters (16)

Indicator parameters – Zona 2 Monte Onorio
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aluminium	8,5 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	19,2 mg/L Cl	250 mg/l	8 %	Median
Coliform bacteria	Conforme MPN/100 mL not detectable	0/100 ml	—	Median
Colour	Incolore Scala Pt/C	accettabile per i consumatori, senza variazioni anomale	—	Median
Conductivity (25 °C)	473 µS/cm	2,500 µS/cm	—	Median
Iron	12,1 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	7,80 pH	6,5–9,5	—	Median
Sodium	22,2 mg/L Na	200 mg/l	11 %	Median
Sulphate	18,6 mg/L SO4	250 mg/l	7 %	Median
Taste	0 tasso diluz.	accettabile per i consumatori, senza variazioni anomale	—	Median
Temperature	15,0 °C	—	—	Median
Total organic carbon (TOC)	0,52 mg/L C	senza variazioni anomale	—	Median
Turbidity	<0,5 NTU below limit of quantification	accettabile per i consumatori, senza variazioni anomale	—	Median

Treatment substances (1)

Treatment substances – Zona 2 Monte Onorio
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 Monte Onorio
Parameter	Value	Parametric value	Share of the parametric value	Reference
Acid capacity to pH 4.3	217 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	54,60 mg/L Ca	—	—	Median
Dry residue	338 mg/L	—	—	Median
Hydrogen carbonate	265 mg/L HCO3	—	—	Median
Magnesium	12,10 mg/L Mg	—	—	Median
Phosphate	165 µg/L P2O5	—	—	Median
Potassium	25,40 mg/L K	—	—	Median
Silicate / silicic acid	54,3 mg/L SiO2	—	—	Median
Thallium	<0,20 µg/L Tl below limit of quantification	—	—	Median
Total hardness	18,7 °F	—	—	Median
Vanadium	9,20 µg/L V	0.14 mg/l	—	Median

Source: https://www.aceaato2.a-acqua.it/content/dam/acea-ato2/pdf/it/mappe-qualita/rignano_flaminio_zona_2_monte_onorio.pdf · luglio 2026 · luglio 2026 · retrieved on 08/07/2026

ZONA 3 EX MAREMMA

ACEA ATO 2 S.p.A.

Water hardness

8.8 °dH

Key values ZONA 3 EX MAREMMA
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	19,60 mg/L NO3	50 mg/l	39 %	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	10,2 mg/L SO4	250 mg/l	4 %	Median
Sodium	21,0 mg/L Na	200 mg/l	11 %	Median

Show all recorded parameters (61 — most recent value per parameter)

Microbiology (2)

Microbiology – ZONA 3 EX MAREMMA
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 EX MAREMMA
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	9,10 µg/L As	10 µg/l	91 %	Median
Bisphenol A	<0,25 µg/L below limit of quantification	2.5 µg/l	< 10 % *	Median
Boron	0,085 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	0,64 mg/L	1.5 mg/l	43 %	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	19,60 mg/L NO3	50 mg/l	39 %	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	2,4 µg/L	30 µg/l	8 %	Median
Uranium	3,15 µg/L U	30 µg/l	—	Median
Vinyl chloride	<0,1 µg/L below limit of quantification	0.5 µg/l	< 20 % *	Median

PFAS (1)

PFAS – ZONA 3 EX MAREMMA
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

Indicator parameters (16)

Indicator parameters – ZONA 3 EX MAREMMA
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	16,7 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)	427 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	7,95 pH	6,5–9,5	—	Median
Sodium	21,0 mg/L Na	200 mg/l	11 %	Median
Sulphate	10,2 mg/L SO4	250 mg/l	4 %	Median
Taste	0 tasso diluz.	accettabile per i consumatori, senza variazioni anomale	—	Median
Temperature	14,5 °C	—	—	Median
Total organic carbon (TOC)	0,49 mg/L C	senza variazioni anomale	—	Median
Turbidity	<0,5 NTU below limit of quantification	accettabile per i consumatori, senza variazioni anomale	—	Median

Treatment substances (1)

Treatment substances – ZONA 3 EX MAREMMA
Parameter	Value	Parametric value	Share of the parametric value	Reference
Free chlorine	0,16 mg/L Cl2	—	—	Median

Further parameters (13)

Further parameters – ZONA 3 EX MAREMMA
Parameter	Value	Parametric value	Share of the parametric value	Reference
Acid capacity to pH 4.3	204 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	47,35 mg/L Ca	—	—	Median
Dry residue	305 mg/L	—	—	Median
Hydrogen carbonate	249 mg/L HCO3	—	—	Median
Magnesium	9,39 mg/L Mg	—	—	Median
Phosphate	238 µg/L P2O5	—	—	Median
Potassium	25,75 mg/L K	—	—	Median
Silicate / silicic acid	46,4 mg/L SiO2	—	—	Median
Thallium	<0,20 µg/L Tl below limit of quantification	—	—	Median
Total hardness	15,7 °F	—	—	Median
Vanadium	20,10 µg/L V	0.14 mg/l	—	Median

Source: https://www.aceaato2.a-acqua.it/content/dam/acea-ato2/pdf/it/mappe-qualita/rignano_flaminio_zona_3_ex_maremma.pdf · luglio 2026 · luglio 2026 · retrieved on 08/07/2026

Zona 4 Punta Verde

ACEA ATO 2 S.p.A.

Water hardness

9 °dH

Key values Zona 4 Punta Verde
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	20,55 mg/L NO3	50 mg/l	41 %	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	12,45 mg/L SO4	250 mg/l	5 %	Median
Sodium	20,8 mg/L Na	200 mg/l	10 %	Median

Show all recorded parameters (61 — most recent value per parameter)

Microbiology (2)

Microbiology – Zona 4 Punta Verde
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 Punta Verde
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	7,68 µg/L As	10 µg/l	77 %	Median
Bisphenol A	<0,25 µg/L below limit of quantification	2.5 µg/l	< 10 % *	Median
Boron	0,039 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	<0,2 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	20,55 mg/L NO3	50 mg/l	41 %	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	2,15 µg/L	30 µg/l	7 %	Median
Uranium	3,20 µg/L U	30 µg/l	—	Median
Vinyl chloride	<0,1 µg/L below limit of quantification	0.5 µg/l	< 20 % *	Median

PFAS (1)

PFAS – Zona 4 Punta Verde
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

Indicator parameters (16)

Indicator parameters – Zona 4 Punta Verde
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aluminium	11,3 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	18,2 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)	429 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	7,80 pH	6,5–9,5	—	Median
Sodium	20,8 mg/L Na	200 mg/l	10 %	Median
Sulphate	12,45 mg/L SO4	250 mg/l	5 %	Median
Taste	0 tasso diluz.	accettabile per i consumatori, senza variazioni anomale	—	Median
Temperature	14,5 °C	—	—	Median
Total organic carbon (TOC)	0,49 mg/L C	senza variazioni anomale	—	Median
Turbidity	<0,5 NTU below limit of quantification	accettabile per i consumatori, senza variazioni anomale	—	Median

Treatment substances (1)

Treatment substances – Zona 4 Punta Verde
Parameter	Value	Parametric value	Share of the parametric value	Reference
Free chlorine	0,16 mg/L Cl2	—	—	Median

Further parameters (13)

Further parameters – Zona 4 Punta Verde
Parameter	Value	Parametric value	Share of the parametric value	Reference
Acid capacity to pH 4.3	199 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	47,20 mg/L Ca	—	—	Median
Dry residue	306 mg/L	—	—	Median
Hydrogen carbonate	243 mg/L HCO3	—	—	Median
Magnesium	10,02 mg/L Mg	—	—	Median
Phosphate	µg/L P2O5 not determined	—	—	Median
Potassium	25,20 mg/L K	—	—	Median
Silicate / silicic acid	63,4 mg/L SiO2	—	—	Median
Thallium	<0,20 µg/L Tl below limit of quantification	—	—	Median
Total hardness	16,0 °F	—	—	Median
Vanadium	19,90 µg/L V	0.14 mg/l	—	Median

Source: https://www.aceaato2.a-acqua.it/content/dam/acea-ato2/pdf/it/mappe-qualita/rignano_flaminio_zona_4_punta_verde.pdf · luglio 2026 · luglio 2026 · retrieved on 08/07/2026

ZONA 5 POGGIO D'ORO

ACEA ATO 2 S.p.A.

Water hardness

9.2 °dH

Key values ZONA 5 POGGIO D'ORO
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	12,70 mg/L NO3	50 mg/l	25 %	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	12,9 mg/L SO4	250 mg/l	5 %	Median
Sodium	18,9 mg/L Na	200 mg/l	9 %	Median

Show all recorded parameters (61 — most recent value per parameter)

Microbiology (2)

Microbiology – ZONA 5 POGGIO D'ORO
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 POGGIO D'ORO
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	7,63 µg/L As	10 µg/l	76 %	Median
Bisphenol A	<0,25 µg/L below limit of quantification	2.5 µg/l	< 10 % *	Median
Boron	0,038 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	0,36 mg/L	1.5 mg/l	24 %	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	12,70 mg/L NO3	50 mg/l	25 %	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	2,15 µg/L	30 µg/l	7 %	Median
Uranium	2,40 µg/L U	30 µg/l	—	Median
Vinyl chloride	<0,1 µg/L below limit of quantification	0.5 µg/l	< 20 % *	Median

PFAS (1)

PFAS – ZONA 5 POGGIO D'ORO
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

Indicator parameters (16)

Indicator parameters – ZONA 5 POGGIO D'ORO
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aluminium	6,0 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	19,1 mg/L Cl	250 mg/l	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)	430 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	7,80 pH	6,5–9,5	—	Median
Sodium	18,9 mg/L Na	200 mg/l	9 %	Median
Sulphate	12,9 mg/L SO4	250 mg/l	5 %	Median
Taste	0 tasso diluz.	accettabile per i consumatori, senza variazioni anomale	—	Median
Temperature	14,5 °C	—	—	Median
Total organic carbon (TOC)	0,49 mg/L C	senza variazioni anomale	—	Median
Turbidity	<0,5 NTU below limit of quantification	accettabile per i consumatori, senza variazioni anomale	—	Median

Treatment substances (1)

Treatment substances – ZONA 5 POGGIO D'ORO
Parameter	Value	Parametric value	Share of the parametric value	Reference
Free chlorine	0,15 mg/L Cl2	—	—	Median

Further parameters (13)

Further parameters – ZONA 5 POGGIO D'ORO
Parameter	Value	Parametric value	Share of the parametric value	Reference
Acid capacity to pH 4.3	199 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	49,40 mg/L Ca	—	—	Median
Dry residue	307 mg/L	—	—	Median
Hydrogen carbonate	243 mg/L HCO3	—	—	Median
Magnesium	9,26 mg/L Mg	—	—	Median
Phosphate	264 µg/L P2O5	—	—	Median
Potassium	21,10 mg/L K	—	—	Median
Silicate / silicic acid	72,6 mg/L SiO2	—	—	Median
Thallium	<0,20 µg/L Tl below limit of quantification	—	—	Median
Total hardness	16,5 °F	—	—	Median
Vanadium	20,00 µg/L V	0.14 mg/l	—	Median

Source: https://www.aceaato2.a-acqua.it/content/dam/acea-ato2/pdf/it/mappe-qualita/rignano_flaminio_zona_5_poggio_d_oro.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).