Drinking water quality in Thiers
PFAS in drinking water
The total of 20 PFAS ("forever chemicals") was last measured at <0,029 µg/L. The EU limit is 0.1 µg/L, so this water is at 0 % of the limit. (3 October 2025)
The four most harmful PFAS add up to 0 µg/L, below the health limit of 0.004 µg/L used in Sweden since 2026.
Substances too small to measure count as 0, so the real total may be higher.
7 PFAS (see each substance)
| Acide perfluoro-nonanoïque (PFNA) | <0,001 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,001 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,001 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,001 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,001 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,001 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,002 µg/L |
Water report for Thiers
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Official assessment
The latest official test passed all quality requirements.
„Eau d'alimentation conforme aux limites de qualité et non conforme aux références de qualité.“
Show all 18 official measurements
| Parameter | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 13.6 mg/L | ≤ 50 mg/L | within limit |
| Nitrite | 0.01 mg/L | ≤ 0.5 mg/L | within limit |
| Lead | <2 µg/L | ≤ 10 µg/L | within limit |
| Copper | N.M. mg(Cu)/L | ≤ 2 mg(Cu)/L | not assessed |
| Nickel | <5 µg/L | ≤ 20 µg/L | within limit |
| Arsenic | 3 µg/L | ≤ 10 µg/L | within limit |
| Chromium | <5 µg/L | ≤ 50 µg/L | within limit |
| Fluoride | 0.05 mg/L | ≤ 1.5 mg/L | within limit |
| Escherichia coli | <1 n/(100mL) | ≤ 0 mL) | within limit |
| Enterococci | <1 n/(100mL) | ≤ 0 mL) | within limit |
| Coliform bacteria | <1 n/(100mL) | ≤ 0 mL) | within limit |
| pH | 6.2 unité pH | 6.5–9 unité pH | exceeded |
| Water hardness | 3.95 °f | no limit | informational |
| Electrical conductivity | 159 µS/cm | 200–1,100 µS/cm | exceeded |
| Chloride | 17.5 mg/L | ≤ 250 mg/L | within limit |
| Sulphate | 8 mg/L | ≤ 250 mg/L | within limit |
| Sodium | 4.4 mg/L | ≤ 200 mg/L | within limit |
| Turbidity | <0,1 NFU | ≤ 2 NFU | within limit |
Frequently asked questions
Is tap water in Thiers safe to drink?
Yes. The latest official test (1 June 2026) checked the tap water in Thiers and it passed every requirement.
How high are PFAS levels in Thiers's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at <0,029 µg/L. The EU limit is 0.1 µg/L, so this water is at 0 % of the limit. (below the EU limit)
Does the water in Thiers also meet the strictest limits in Europe?
Yes. Even against Europe's strictest limit, the health limit of 0.004 µg/L used in Sweden since 2026, the measured value of 0 µg/L stays below.
How hard is the water in Thiers?
The water hardness in Thiers is 3.95 °f (soft). This mainly matters for household appliances and detergent dosing, not for health.
Where does this data come from?
All values come from official publications: Hub'eau, Qualité de l'eau potable (Ministère de la Santé / OFB / BRGM). Retrieved on 28 August 2026.
Data source
- Hub'eau, Qualité de l'eau potable (Ministère de la Santé / OFB / BRGM)
- https://hubeau.eaufrance.fr/api/v1/qualite_eau_potable/resultats_dis?code_commune=63430
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 28 August 2026
- Supply networks
- THIERS MONTSAUVY CHASSIGNOL, LES BELINS, THIERS BAS SERVICE
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.