Italy · Comune
Drinking water in Trissino
One supply zone, published by Viacqua 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 Trissino Zona omogenea di approvvigionamento 308
Viacqua S.p.A.| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Sum of PFAS | < 10 ng/L below limit of quantification | 0.1 µg/l | < 10 % * | Mean · Comune di Trissino Zona omogenea di approvvigionamento 308 |
| Escherichia coli (E. coli) | 0 numero/100ml not detectable | 0/100 ml | — | Mean · Comune di Trissino Zona omogenea di approvvigionamento 308 |
* 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 (11 — most recent value per parameter)
Microbiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 numero/100ml not detectable | 0/100 ml | — | Mean · Comune di Trissino Zona omogenea di approvvigionamento 308 |
| Intestinal enterococci | 0 numero/100ml not detectable | 0/100 ml | — | Mean · Comune di Trissino Zona omogenea di approvvigionamento 308 |
PFAS (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Sum of 4 PFAS | < 5 ng/L below limit of quantification | 20 ng/l | < 25 % * | Mean · Comune di Trissino Zona omogenea di approvvigionamento 308 |
| Sum of PFAS | < 10 ng/L below limit of quantification | 0.1 µg/l | < 10 % * | Mean · Comune di Trissino Zona omogenea di approvvigionamento 308 |
* 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 (5)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Coliform bacteria | 0 numero/100 ml not detectable | 0/100 ml | — | Mean · Comune di Trissino Zona omogenea di approvvigionamento 308 |
| Colony count 22 °C | 0 UFC/ml not detectable | senza variazioni anomale | — | Mean · Comune di Trissino Zona omogenea di approvvigionamento 308 |
| Conductivity (25 °C) | 336 µS/cm | 2,500 µS/cm | — | Mean · Comune di Trissino Zona omogenea di approvvigionamento 308 |
| pH | 7,9 pH | 6,5–9,5 | — | Mean · Comune di Trissino Zona omogenea di approvvigionamento 308 |
| Turbidity | 0,4 NTU | accettabile per i consumatori, senza variazioni anomale | — | Mean · Comune di Trissino Zona omogenea di approvvigionamento 308 |
Treatment substances (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Total chlorine | 0,13 mg/L | — | — | Mean · Comune di Trissino Zona omogenea di approvvigionamento 308 |
Further parameters (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Dry residue | 248 mg/L | — | — | Mean · Comune di Trissino Zona omogenea di approvvigionamento 308 |
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
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).