Italy · Comune
Drinking water in Lastra a Signa
2 supply zones, published by Publiacqua 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 Lastra a Signa Zona BQ00440
Publiacqua S.p.A.| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Sum of PFAS | 0.007 µg/l | 0.1 µg/l | 7 % | Mean · Comune di Lastra a Signa - Zona BQ00440 |
| Nitrate | 19 mg/l | 50 mg/l | 38 % | Mean · Comune di Lastra a Signa - Zona BQ00440 |
| Lead | < 1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Mean · Comune di Lastra a Signa - Zona BQ00440 |
| Sulphate | 38 mg/l | 250 mg/l | 15 % | Mean · Comune di Lastra a Signa - Zona BQ00440 |
| Sodium | 45 mg/l | 200 mg/l | 22 % | Mean · Comune di Lastra a Signa - Zona BQ00440 |
* 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 (41 — most recent value per parameter)
Chemical parameters (18)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Antimony | < 1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Mean · Comune di Lastra a Signa - Zona BQ00440 |
| Arsenic | < 1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Mean · Comune di Lastra a Signa - Zona BQ00440 |
| Boron | < 0.1 mg/l below limit of quantification | 1.5 mg/l | < 7 % * | Mean · Comune di Lastra a Signa - Zona BQ00440 |
| Cadmium | < 0.5 µg/l below limit of quantification | 5 µg/l | < 10 % * | Mean · Comune di Lastra a Signa - Zona BQ00440 |
| Chlorate | < 0.05 mg/l below limit of quantification | 0,25 — bzw. 0,70 bei Desinfektion mit Chlordioxid | — | Mean · Comune di Lastra a Signa - Zona BQ00440 |
| Chlorite | < 0.05 mg/l below limit of quantification | 0,25 — bzw. 0,70 bei Desinfektion mit Chlordioxid | — | Mean · Comune di Lastra a Signa - Zona BQ00440 |
| Chromium | < 1 µg/l below limit of quantification | 25 µg/l | < 4 % * | Mean · Comune di Lastra a Signa - Zona BQ00440 |
| Copper | < 0.1 mg/l below limit of quantification | 2 mg/l | < 5 % * | Mean · Comune di Lastra a Signa - Zona BQ00440 |
| Fluoride | < 0.20 mg/l below limit of quantification | 1.5 mg/l | < 13 % * | Mean · Comune di Lastra a Signa - Zona BQ00440 |
| Lead | < 1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Mean · Comune di Lastra a Signa - Zona BQ00440 |
| Mercury | < 0.2 µg/l below limit of quantification | 1 µg/l | < 20 % * | Mean · Comune di Lastra a Signa - Zona BQ00440 |
| Nickel | < 1 µg/l below limit of quantification | 20 µg/l | < 5 % * | Mean · Comune di Lastra a Signa - Zona BQ00440 |
| Nitrate | 19 mg/l | 50 mg/l | 38 % | Mean · Comune di Lastra a Signa - Zona BQ00440 |
| Nitrite | < 0.01 mg/l below limit of quantification | 0.5 mg/l | < 2 % * | Mean · Comune di Lastra a Signa - Zona BQ00440 |
| Selenium | 1 µg/l | 20 µg/l | 5 % | Mean · Comune di Lastra a Signa - Zona BQ00440 |
| Tetrachloroethene and Trichloroethene (sum) | < 0.5 µg/l below limit of quantification | 10 µg/l | < 5 % * | Mean · Comune di Lastra a Signa - Zona BQ00440 |
| Trihalomethanes — Total | 5 µg/l | 30 µg/l | 17 % | Mean · Comune di Lastra a Signa - Zona BQ00440 |
| Uranium | < 1 µg/l below limit of quantification | 30 µg/l | < 3 % * | Mean · Comune di Lastra a Signa - Zona BQ00440 |
* 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.
PFAS (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Sum of PFAS | 0.007 µg/l | 0.1 µg/l | 7 % | Mean · Comune di Lastra a Signa - Zona BQ00440 |
Indicator parameters (14)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | < 20 µg/l below limit of quantification | 0.2 mg/l | < 10 % * | Mean · Comune di Lastra a Signa - Zona BQ00440 |
| Ammonium | < 0.05 mg/l below limit of quantification | 0.5 mg/l | < 10 % * | Mean · Comune di Lastra a Signa - Zona BQ00440 |
| Chloride | 70 mg/l | 250 mg/l | 28 % | Mean · Comune di Lastra a Signa - Zona BQ00440 |
| Colour | < 3 unità Pt/Co below limit of quantification | accettabile per i consumatori, senza variazioni anomale | — | Mean · Comune di Lastra a Signa - Zona BQ00440 |
| Conductivity (25 °C) | 778 µS/cm | 2,500 µS/cm | — | Mean · Comune di Lastra a Signa - Zona BQ00440 |
| Iron | < 20 µg/l below limit of quantification | 0.2 mg/l | < 10 % * | Mean · Comune di Lastra a Signa - Zona BQ00440 |
| Manganese | < 4 µg/l below limit of quantification | 50 µg/l | < 8 % * | Mean · Comune di Lastra a Signa - Zona BQ00440 |
| Odour | 1 Tasso di diluizione | accettabile per i consumatori, senza variazioni anomale | — | Mean · Comune di Lastra a Signa - Zona BQ00440 |
| pH | 7.2 unità pH | 6,5–9,5 | — | Mean · Comune di Lastra a Signa - Zona BQ00440 |
| Sodium | 45 mg/l | 200 mg/l | 22 % | Mean · Comune di Lastra a Signa - Zona BQ00440 |
| Sulphate | 38 mg/l | 250 mg/l | 15 % | Mean · Comune di Lastra a Signa - Zona BQ00440 |
| Taste | ACCETTABILE Tasso di diluizione | accettabile per i consumatori, senza variazioni anomale | — | Mean · Comune di Lastra a Signa - Zona BQ00440 |
| Total organic carbon (TOC) | 0.32 mg/l C | senza variazioni anomale | — | Mean · Comune di Lastra a Signa - Zona BQ00440 |
| Turbidity | 0.23 NTU | accettabile per i consumatori, senza variazioni anomale | — | Mean · Comune di Lastra a Signa - Zona BQ00440 |
* 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.
Treatment substances (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Total chlorine | 0.19 mg/l Cl2 | — | — | Mean · Comune di Lastra a Signa - Zona BQ00440 |
Further parameters (7)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Acid capacity to pH 4.3 | 358 mg/l HCO3- | — | — | Mean · Comune di Lastra a Signa - Zona BQ00440 |
| Calcium | 132 mg/l | — | — | Mean · Comune di Lastra a Signa - Zona BQ00440 |
| Dry residue | 557 mg/l | — | — | Mean · Comune di Lastra a Signa - Zona BQ00440 |
| Magnesium | 15 mg/l | — | — | Mean · Comune di Lastra a Signa - Zona BQ00440 |
| Potassium | 1.3 mg/l | — | — | Mean · Comune di Lastra a Signa - Zona BQ00440 |
| Total hardness | 39 °F | — | — | Mean · Comune di Lastra a Signa - Zona BQ00440 |
| Vanadium | < 1.0 µg/l below limit of quantification | 0.14 mg/l | < 0.7 % * | Mean · Comune di Lastra a Signa - Zona BQ00440 |
* 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.
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.
Comune di Lastra a Signa Zona BQ00470
Publiacqua S.p.A.| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Sum of PFAS | 0.015 µg/l | 0.1 µg/l | 15 % | Mean · Comune di Lastra a Signa - Zona BQ00470 |
| Nitrate | 10 mg/l | 50 mg/l | 20 % | Mean · Comune di Lastra a Signa - Zona BQ00470 |
| Sulphate | 45 mg/l | 250 mg/l | 18 % | Mean · Comune di Lastra a Signa - Zona BQ00470 |
| Sodium | 32 mg/l | 200 mg/l | 16 % | Mean · Comune di Lastra a Signa - Zona BQ00470 |
Show all recorded parameters (26 — most recent value per parameter)
Chemical parameters (8)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Arsenic | < 1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Mean · Comune di Lastra a Signa - Zona BQ00470 |
| Chlorate | 0.19 mg/l | 0,25 — bzw. 0,70 bei Desinfektion mit Chlordioxid | — | Mean · Comune di Lastra a Signa - Zona BQ00470 |
| Chlorite | 0.21 mg/l | 0,25 — bzw. 0,70 bei Desinfektion mit Chlordioxid | — | Mean · Comune di Lastra a Signa - Zona BQ00470 |
| Fluoride | < 0.20 mg/l below limit of quantification | 1.5 mg/l | < 13 % * | Mean · Comune di Lastra a Signa - Zona BQ00470 |
| Nitrate | 10 mg/l | 50 mg/l | 20 % | Mean · Comune di Lastra a Signa - Zona BQ00470 |
| Nitrite | < 0.01 mg/l below limit of quantification | 0.5 mg/l | < 2 % * | Mean · Comune di Lastra a Signa - Zona BQ00470 |
| Tetrachloroethene and Trichloroethene (sum) | < 0.5 µg/l below limit of quantification | 10 µg/l | < 5 % * | Mean · Comune di Lastra a Signa - Zona BQ00470 |
| Trihalomethanes — Total | 10 µg/l | 30 µg/l | 33 % | Mean · Comune di Lastra a Signa - Zona BQ00470 |
* 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.
PFAS (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Sum of PFAS | 0.015 µg/l | 0.1 µg/l | 15 % | Mean · Comune di Lastra a Signa - Zona BQ00470 |
Indicator parameters (10)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | 31 µg/l | 0.2 mg/l | 16 % | Mean · Comune di Lastra a Signa - Zona BQ00470 |
| Ammonium | < 0.05 mg/l below limit of quantification | 0.5 mg/l | < 10 % * | Mean · Comune di Lastra a Signa - Zona BQ00470 |
| Chloride | 36 mg/l | 250 mg/l | 14 % | Mean · Comune di Lastra a Signa - Zona BQ00470 |
| Conductivity (25 °C) | 580 µS/cm | 2,500 µS/cm | — | Mean · Comune di Lastra a Signa - Zona BQ00470 |
| Manganese | < 4 µg/l below limit of quantification | 50 µg/l | < 8 % * | Mean · Comune di Lastra a Signa - Zona BQ00470 |
| pH | 7.3 unità pH | 6,5–9,5 | — | Mean · Comune di Lastra a Signa - Zona BQ00470 |
| Sodium | 32 mg/l | 200 mg/l | 16 % | Mean · Comune di Lastra a Signa - Zona BQ00470 |
| Sulphate | 45 mg/l | 250 mg/l | 18 % | Mean · Comune di Lastra a Signa - Zona BQ00470 |
| Taste | ACCETTABILE Tasso di diluizione | accettabile per i consumatori, senza variazioni anomale | — | Mean · Comune di Lastra a Signa - Zona BQ00470 |
| Turbidity | 0.31 NTU | accettabile per i consumatori, senza variazioni anomale | — | Mean · Comune di Lastra a Signa - Zona BQ00470 |
* 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.
Treatment substances (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Total chlorine | 0.19 mg/l Cl2 | — | — | Mean · Comune di Lastra a Signa - Zona BQ00470 |
Further parameters (6)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Acid capacity to pH 4.3 | 345 mg/l HCO3- | — | — | Mean · Comune di Lastra a Signa - Zona BQ00470 |
| Calcium | 101 mg/l | — | — | Mean · Comune di Lastra a Signa - Zona BQ00470 |
| Dry residue | 415 mg/l | — | — | Mean · Comune di Lastra a Signa - Zona BQ00470 |
| Magnesium | 17 mg/l | — | — | Mean · Comune di Lastra a Signa - Zona BQ00470 |
| Potassium | 2.8 mg/l | — | — | Mean · Comune di Lastra a Signa - Zona BQ00470 |
| Total hardness | 32 °F | — | — | Mean · Comune di Lastra a Signa - Zona BQ00470 |
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).