Italy · Comune

Drinking water in Trecate

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 Trecate

Acqua Novara.VCO S.p.A.

Water hardness

7.5 °dH

Key values Comune di Trecate
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	10,34 mg/l	50 mg/l	21 %	Single value · Comune di Trecate
Lead	< 1 ug/l below limit of quantification	10 µg/l	< 10 % *	Single value · Comune di Trecate
Escherichia coli (E. coli)	0 MPN/100ml	0/100 ml	—	Single value · Comune di Trecate
Sulphate	21,3 mg/l	250 mg/l	9 %	Single value · Comune di Trecate
Sodium	7,55 mg/l	200 mg/l	4 %	Single value · Comune di Trecate

* 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 (30 — most recent value per parameter)

Microbiology (2)

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

Chemical parameters (13)

Chemical parameters – Comune di Trecate
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 Trecate
Arsenic	< 1 ug/l below limit of quantification	10 µg/l	< 10 % *	Single value · Comune di Trecate
Bromate	0 ug/l	10 µg/l	0 %	Single value · Comune di Trecate
Cadmium	< 0,2 ug/l below limit of quantification	5 µg/l	< 4 % *	Single value · Comune di Trecate
Chlorate	0,012 mg/l	0,25 — bzw. 0,70 bei Desinfektion mit Chlordioxid	—	Single value · Comune di Trecate
Chlorite	0,003 mg/l	0,25 — bzw. 0,70 bei Desinfektion mit Chlordioxid	—	Single value · Comune di Trecate
Chromium	3,59 ug/l	25 µg/l	14 %	Single value · Comune di Trecate
Copper	< 0,010 mg/l below limit of quantification	2 mg/l	< 0.5 % *	Single value · Comune di Trecate
Fluoride	< 0,2 mg/l below limit of quantification	1.5 mg/l	< 13 % *	Single value · Comune di Trecate
Lead	< 1 ug/l below limit of quantification	10 µg/l	< 10 % *	Single value · Comune di Trecate
Nickel	< 1 ug/l below limit of quantification	20 µg/l	< 5 % *	Single value · Comune di Trecate
Nitrate	10,34 mg/l	50 mg/l	21 %	Single value · Comune di Trecate
Nitrite	< 0,1 mg/l below limit of quantification	0.5 mg/l	< 20 % *	Single value · Comune di Trecate

Indicator parameters (10)

Indicator parameters – Comune di Trecate
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 Trecate
Coliform bacteria	0 MPN/100ml	0/100 ml	—	Single value · Comune di Trecate
Colony count 22 °C	non rilevabile UFC/ml	senza variazioni anomale	—	Single value · Comune di Trecate
Conductivity (25 °C)	244 uS/cm	2,500 µS/cm	—	Single value · Comune di Trecate
Iron	< 20 ug/l below limit of quantification	0.2 mg/l	< 10 % *	Single value · Comune di Trecate
Manganese	2,78 ug/l	50 µg/l	6 %	Single value · Comune di Trecate
Sodium	7,55 mg/l	200 mg/l	4 %	Single value · Comune di Trecate
Sulphate	21,3 mg/l	250 mg/l	9 %	Single value · Comune di Trecate
Total organic carbon (TOC)	< 2 mg/l below limit of quantification	senza variazioni anomale	—	Single value · Comune di Trecate
Turbidity	0,16 NTU	accettabile per i consumatori, senza variazioni anomale	—	Single value · Comune di Trecate

Further parameters (5)

Further parameters – Comune di Trecate
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	36,5 mg/l	—	—	Single value · Comune di Trecate
Dry residue	168,6 mg/l	—	—	Single value · Comune di Trecate
Magnesium	10,1 mg/l	—	—	Single value · Comune di Trecate
Potassium	1,17 mg/l	—	—	Single value · Comune di Trecate
Total hardness	13,4 °F	—	—	Single value · Comune di Trecate

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=81&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).