Italy · Comune

Drinking water in Comignago

One supply zone, published by Acqua Novara.VCO 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 Comignago

Acqua Novara.VCO S.p.A.

Water hardness

6.5 °dH

Key values Comune di Comignago
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	32,5 mg/l	50 mg/l	65 %	Single value · Comune di Comignago
Lead	< 1 ug/l below limit of quantification	10 µg/l	< 10 % *	Single value · Comune di Comignago
Escherichia coli (E. coli)	0 MPN/100ml	0/100 ml	—	Single value · Comune di Comignago
Sulphate	9,08 mg/l	250 mg/l	4 %	Single value · Comune di Comignago
Sodium	5,89 mg/l	200 mg/l	3 %	Single value · Comune di Comignago

* 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 (34 — most recent value per parameter)

Microbiology (2)

Microbiology – Comune di Comignago
Parameter	Value	Parametric value	Share of the parametric value	Reference
Escherichia coli (E. coli)	0 MPN/100ml	0/100 ml	—	Single value · Comune di Comignago
Intestinal enterococci	0 MPN/100ml	0/100 ml	—	Single value · Comune di Comignago

Chemical parameters (17)

Chemical parameters – Comune di Comignago
Parameter	Value	Parametric value	Share of the parametric value	Reference
Antimony	< 1 ug/l below limit of quantification	10 µg/l	< 10 % *	Single value · Comune di Comignago
Arsenic	< 1 ug/l below limit of quantification	10 µg/l	< 10 % *	Single value · Comune di Comignago
Bromate	0 ug/l	10 µg/l	0 %	Single value · Comune di Comignago
Cadmium	< 0,2 ug/l below limit of quantification	5 µg/l	< 4 % *	Single value · Comune di Comignago
Chlorate	0,008 mg/l	0,25 — bzw. 0,70 bei Desinfektion mit Chlordioxid	—	Single value · Comune di Comignago
Chlorite	0 mg/l	0,25 — bzw. 0,70 bei Desinfektion mit Chlordioxid	—	Single value · Comune di Comignago
Chromium	< 1 ug/l below limit of quantification	25 µg/l	< 4 % *	Single value · Comune di Comignago
Copper	< 0,010 mg/l below limit of quantification	2 mg/l	< 0.5 % *	Single value · Comune di Comignago
Fluoride	< 0,2 mg/l below limit of quantification	1.5 mg/l	< 13 % *	Single value · Comune di Comignago
Lead	< 1 ug/l below limit of quantification	10 µg/l	< 10 % *	Single value · Comune di Comignago
Nickel	< 1 ug/l below limit of quantification	20 µg/l	< 5 % *	Single value · Comune di Comignago
Nitrate	32,5 mg/l	50 mg/l	65 %	Single value · Comune di Comignago
Nitrite	< 0,1 mg/l below limit of quantification	0.5 mg/l	< 20 % *	Single value · Comune di Comignago
Pesticides — Total	0,00 ug/l	0.5 µg/l	0 %	Single value · Comune di Comignago
Polycyclic aromatic hydrocarbons	< 0.03 ug/l below limit of quantification	0.1 µg/l	< 30 % *	Single value · Comune di Comignago
Tetrachloroethene and Trichloroethene (sum)	0 ug/l	10 µg/l	0 %	Single value · Comune di Comignago
Trihalomethanes — Total	< 1 ug/l below limit of quantification	30 µg/l	< 3 % *	Single value · Comune di Comignago

Indicator parameters (10)

Indicator parameters – Comune di Comignago
Parameter	Value	Parametric value	Share of the parametric value	Reference
Ammonium	< 0,1 mg/l below limit of quantification	0.5 mg/l	< 20 % *	Single value · Comune di Comignago
Coliform bacteria	0 MPN/100ml	0/100 ml	—	Single value · Comune di Comignago
Colony count 22 °C	non rilevabile UFC/ml	senza variazioni anomale	—	Single value · Comune di Comignago
Conductivity (25 °C)	207 uS/cm	2,500 µS/cm	—	Single value · Comune di Comignago
Iron	< 20 ug/l below limit of quantification	0.2 mg/l	< 10 % *	Single value · Comune di Comignago
Manganese	< 1 ug/l below limit of quantification	50 µg/l	< 2 % *	Single value · Comune di Comignago
Sodium	5,89 mg/l	200 mg/l	3 %	Single value · Comune di Comignago
Sulphate	9,08 mg/l	250 mg/l	4 %	Single value · Comune di Comignago
Total organic carbon (TOC)	< 2 mg/l below limit of quantification	senza variazioni anomale	—	Single value · Comune di Comignago
Turbidity	0,15 NTU	accettabile per i consumatori, senza variazioni anomale	—	Single value · Comune di Comignago

Further parameters (5)

Further parameters – Comune di Comignago
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	30,6 mg/l	—	—	Single value · Comune di Comignago
Dry residue	143,1 mg/l	—	—	Single value · Comune di Comignago
Magnesium	10,4 mg/l	—	—	Single value · Comune di Comignago
Potassium	1,87 mg/l	—	—	Single value · Comune di Comignago
Total hardness	11,6 °F	—	—	Single value · Comune di Comignago

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.acquanovaravco.eu/AnalisiAcqua/GetData?id=27&periodo=2026+-+I+Semestre · 2026 - I Semestre · 2026 - I Semestre · retrieved on 12/08/2026

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).