Italy · Comune

Drinking water in Rho

One supply zone, published by Gruppo CAP (CAP Holding 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).

Comune di Rho

Gruppo CAP (CAP Holding S.p.A.)

Key values Comune di Rho
Parameter	Value	Parametric value	Share of the parametric value	Reference
Sum of PFAS	0,02 µg/l	0.1 µg/l	20 %	Median · Comune di Rho · Source [2]
Nitrate	30 mg/l	50 mg/l	60 %	Median · Comune di Rho · Source [1]
Lead	< 2 µg/l below limit of quantification	10 µg/l	< 20 % *	Maximum · Comune di Rho · Source [1]
Sulphate	26 mg/l	250 mg/l	10 %	Median · Comune di Rho · Source [1]
Sodium	10 mg/l	200 mg/l	5 %	Median · Comune di Rho · Source [1]

* 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 (49 — most recent value per parameter)

Microbiology (1)

Microbiology – Comune di Rho
Parameter	Value	Parametric value	Share of the parametric value	Reference
Intestinal enterococci	0 UFC/100ml	0/100 ml	—	Maximum · Median 0 · Comune di Rho · Source [1]

Chemical parameters (30)

Chemical parameters – Comune di Rho
Parameter	Value	Parametric value	Share of the parametric value	Reference
1,2-dichloroethane	< 0,9 µg/l below limit of quantification	3 µg/l	< 30 % *	Maximum · Comune di Rho · Source [1]
Alachlor	< 0,01 µg/l below limit of quantification	—	—	Maximum · Comune di Rho · Source [1]
Antimony	< 1,0 µg/l below limit of quantification	10 µg/l	< 10 % *	Maximum · Comune di Rho · Source [1]
Arsenic	1 µg/l	10 µg/l	10 %	Median · Comune di Rho · Source [1]
Atrazine	< 0,01 µg/l below limit of quantification	—	—	Maximum · Comune di Rho · Source [1]
Bentazone	< 0,01 µg/l below limit of quantification	—	—	Maximum · Comune di Rho · Source [1]
Benzene	< 0,3 µg/l below limit of quantification	1 µg/l	< 30 % *	Maximum · Comune di Rho · Source [1]
Boscalid	< 0,01 µg/l below limit of quantification	—	—	Maximum · Comune di Rho · Source [1]
Bromodichloromethane	< 0,9 µg/l below limit of quantification	—	—	Maximum · Comune di Rho · Source [1]
Chlorite	< 0,02 mg/l below limit of quantification	0,25 — bzw. 0,70 bei Desinfektion mit Chlordioxid	—	Maximum · Comune di Rho · Source [1]
Chromium	6 µg/l	25 µg/l	24 %	Maximum · Comune di Rho · Source [1]
Copper	8 µg/l	2 mg/l	0.4 %	Maximum · Comune di Rho · Source [1]
Fluoride	< 0,20 mg/l below limit of quantification	1.5 mg/l	< 13 % *	Maximum · Comune di Rho · Source [1]
Imidacloprid	< 0,01 µg/l below limit of quantification	—	—	Maximum · Comune di Rho · Source [1]
Lead	< 2 µg/l below limit of quantification	10 µg/l	< 20 % *	Maximum · Comune di Rho · Source [1]
Mercury	< 0,3 µg/l below limit of quantification	1 µg/l	< 30 % *	Maximum · Comune di Rho · Source [2]
Molinate	< 0,01 µg/l below limit of quantification	—	—	Maximum · Comune di Rho · Source [1]
Nitrate	30 mg/l	50 mg/l	60 %	Median · Comune di Rho · Source [1]
Nitrite	0,03 mg/l	0.5 mg/l	6 %	Median · Comune di Rho · Source [1]
Pesticides — Total	< 0,01 µg/l below limit of quantification	0.5 µg/l	< 2 % *	Maximum · Comune di Rho · Source [1]
Propazine	< 0,01 µg/l below limit of quantification	—	—	Maximum · Comune di Rho · Source [1]
Selenium	< 1 µg/l below limit of quantification	20 µg/l	< 5 % *	Maximum · Comune di Rho · Source [1]
Simazine	< 0,01 µg/l below limit of quantification	—	—	Maximum · Comune di Rho · Source [1]
Terbuthylazine	< 0,01 µg/l below limit of quantification	—	—	Maximum · Comune di Rho · Source [1]
Tetrachloroethene	1,3 µg/l	—	—	Maximum · Comune di Rho · Source [1]
Tetrachloroethene and Trichloroethene (sum)	2 µg/l	10 µg/l	20 %	Maximum · Comune di Rho · Source [1]
Trichloroethene	1,1 µg/l	—	—	Maximum · Comune di Rho · Source [1]
Trichloromethane (chloroform)	4,4 µg/l	—	—	Median · Comune di Rho · Source [1]
Trihalomethanes — Total	4 µg/l	30 µg/l	13 %	Median · Comune di Rho · Source [1]
Uranium	4 µg/l	30 µg/l	13 %	Median · Comune di Rho · Source [1]

PFAS (3)

PFAS – Comune di Rho
Parameter	Value	Parametric value	Share of the parametric value	Reference
HFPO-DA (GenX)	< 0,0010 µg/l below limit of quantification	—	—	Maximum · Comune di Rho · Source [1]
Perfluorodecane sulfonic acid (PFDS)	< 0,0010 µg/l below limit of quantification	—	—	Maximum · Comune di Rho · Source [1]
Sum of PFAS	0,02 µg/l	0.1 µg/l	20 %	Median · Comune di Rho · Source [2]

Indicator parameters (8)

Indicator parameters – Comune di Rho
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aluminium	< 20 µg/l below limit of quantification	0.2 mg/l	< 10 % *	Maximum · Comune di Rho · Source [1]
Ammonium	< 0,10 mg/l below limit of quantification	0.5 mg/l	< 20 % *	Maximum · Comune di Rho · Source [1]
Chloride	20 mg/l	250 mg/l	8 %	Median · Comune di Rho · Source [1]
Colony count 22 °C	5 UFC/100ml	senza variazioni anomale	—	Median · Comune di Rho · Source [1]
pH	7,7 unita pH	6,5–9,5	—	Median · Comune di Rho · Source [1]
Sodium	10 mg/l	200 mg/l	5 %	Median · Comune di Rho · Source [1]
Sulphate	26 mg/l	250 mg/l	10 %	Median · Comune di Rho · Source [1]
Turbidity	0,18 NTU	accettabile per i consumatori, senza variazioni anomale	—	Median · Comune di Rho · Source [1]

Further parameters (7)

Further parameters – Comune di Rho
Parameter	Value	Parametric value	Share of the parametric value	Reference
Barium	< 0,1 µg/l below limit of quantification	—	—	Maximum · Comune di Rho · Source [1]
Calcium	65 mg/l	—	—	Median · Comune di Rho · Source [1]
Dry residue	308 mg/l	—	—	Median · Comune di Rho · Source [1]
Hydrogen carbonate	281 mg/l	—	—	Median · Comune di Rho · Source [2]
Potassium	1,1 mg/l	—	—	Median · Comune di Rho · Source [1]
Vanadium	< 5 µg/l below limit of quantification	0.14 mg/l	< 4 % *	Maximum · Comune di Rho · Source [1]
Zinc	27 µg/l	—	—	Median · Comune di Rho · Source [1]

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.

Sources: [1] https://www.gruppocap.it/content/dam/groupcap/assets/documents/documents-web/cosa-facciamo/qualita-acqua/analisi-2026/ii-trimestre/II%20Trimestre%202026.csv · II Trimestre 2026 · Campionamenti dal 01.04.2026 al 29.06.2026 · retrieved on 26/08/2026 [2] https://www.gruppocap.it/content/dam/groupcap/assets/documents/documents-web/cosa-facciamo/qualita-acqua/analisi-2026/i-trimestre-2026/Acquedotto%20I%20TRIMESTRE%202026.csv · I Trimestre 2026 · Campionamenti dal 14.01.2026 al 30.03.2026 · retrieved on 26/08/2026

How to read the share of the parametric value

12 % Share of the parametric value. The proportion of the permitted maximum that the measured value uses — here 12 %, so just over an eighth.

< 10 % * Below the limit of quantification. The substance was not detectable. The mark shows where the detection limit lies relative to the parametric value — the actual share of the parametric value is below that.

Several samples per year: for chemical parameters the mean value is given, for microbiological ones the highest measured value. There the parametric value is zero — a single finding would disappear in the average, and it is precisely that finding which is the information. Which reference applies is stated in the last column of the table.

Legal basis: Art. 18 D.Lgs. 18/2023 as amended by D.Lgs. 102/2025 (transposition of EU Directive 2020/2184). The values are not official — the publication of the Gestore, to which every row links, remains authoritative. Assignment of the comune: information in the analysis document, resolved against the municipality list of ISTAT (territorial status 01.01.2026, CC BY 4.0).