PFAS in Saint-Gervais-les-Trois-Clochers's tap water: 4 ng/L, 8x our 0.5 ng/L benchmark
Last PFAS check: · Source: Hub'eau
PFAS in drinking water
8× above our health benchmark
0.5 ng/L is our benchmark, not an official limit. Same EFSA method as Sweden, Denmark and the Netherlands, but stricter. It's a yearly average, compared here with the latest check.
Sample taken in Vaux-sur-Vienne, on the same distribution network as Saint-Gervais-les-Trois-Clochers (VAUX SV VAUX). The health authority samples one tap per network; a network carries the same treated water everywhere.
More about this result
The US also limits PFOA and PFOS to 4 ng/L each, per substance.
Substances below the detection limit count as 0, so the real total may be higher.
One of these four, PFOA, is classified as causing cancer in humans by the WHO's cancer research agency (IARC).
More PFAS than in 90% of the cities we track
checked on 21 May 2026
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Perfluorohexane sulfonate (PFHXS) | 0.0027 µg/L |
| Acide perfluoropentanoïque (PFPEA) | 0.0019 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | 0.0013 µg/L |
| Acide perfluorohexanoïque (PFHXA) | 0.0013 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,010 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,0050 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,0050 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,0010 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,010 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,0010 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,0050 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,0050 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,0050 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,0010 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,0050 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,010 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,0010 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | <0,0010 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,0010 µg/L |
| Acide perfluoro-octanoïque (PFOA) | <0,0010 µg/L |
Above our health benchmark. Here are some filter options.
- EU legal limit
- 7.2 ng/L sum of 20 PFAS, below the 100 ng/L limit
- Last PFAS test
- 21 May 2026
- Water supplier
- EAUX DE VIENNE - SIVEER
In Saint-Gervais-les-Trois-Clochers, the 4 most closely watched PFAS (PFAS-4) add up to 4 ng/L (0.004 µg/L) at the latest PFAS check on 21 May 2026. That's 8 times our 0.5 ng/L health benchmark, exactly at Sweden's legal limit of 4 ng/L. Sum of 20 PFAS: 7.2 ng/L (0.0072 µg/L), below the EU legal limit (100 ng/L). Sampled in Vaux-sur-Vienne, on the same network. 6 checks since 22 May 2025: PFAS-4 up to 5.6 ng/L, sometimes below the detection limit, averaging 3.33 ng/L over 12 months. Rising on the main network. Source: Hub'eau, Qualité de l'eau potable (Ministère de la Santé / OFB / BRGM).
Details and sources
PFAS over time in Saint-Gervais-les-Trois-Clochers
6 PFAS checks since 22 May 2025, values as published. Samples from 2 communes on the same network: it's the same water, so each one applies to Saint-Gervais-les-Trois-Clochers. Samples come from 2 distribution networks. The trend refers to the network “VAUX SV VAUX”.
| Date | PFAS-4 | Sum of 20 PFAS | Sampled at | Network |
|---|---|---|---|---|
| 4 ng/L | 7.2 ng/L | Vaux-sur-Vienne | VAUX SV VAUX | |
| < detection limit | < detection limit | Saint-Gervais-les-Trois-Clochers | VAUX SV ST GERVAIS | |
| 1.8 ng/L | 3.1 ng/L | Vaux-sur-Vienne | VAUX SV VAUX | |
| 5.6 ng/L | 18.9 ng/L | Vaux-sur-Vienne | VAUX SV VAUX | |
| < 4 ng/L | < 86 ng/L | Saint-Gervais-les-Trois-Clochers | VAUX SV ST GERVAIS | |
| 1.9 ng/L | 3.2 ng/L | Vaux-sur-Vienne | VAUX SV VAUX |
“<” means not detected, the figure being the detection limit. “–” means not published. Labs have only reported the PFAS-4 sum (SANDRE code 9268) since autumn 2025. How to read a PFAS result
What the latest check found
At the latest check, the water was within every limit tested.
See all 21 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 0.9 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | <0,01 mg/L | ≤ 0.5 mg/L | within the limit |
| Lead | <0,4 µg/L | ≤ 10 µg/L | within the limit |
| Copper | <0,01 mg(Cu)/L | ≤ 2 mg(Cu)/L | within the limit |
| Nickel | <1 µg/L | ≤ 20 µg/L | within the limit |
| Arsenic | <0,2 µg/L | ≤ 10 µg/L | within the limit |
| Cadmium | <0,025 µg/L | ≤ 5 µg/L | within the limit |
| Chromium | <1 µg/L | ≤ 50 µg/L | within the limit |
| Uranium | <0,1 µg/L | ≤ 30 µg/L | within the limit |
| Fluoride | 0.59 mg/L | ≤ 1.5 mg/L | within the limit |
| Escherichia coli | 0 n/(100mL) | ≤ 0 mL) | within the limit |
| Enterococci | 0 n/(100mL) | ≤ 0 mL) | within the limit |
| Coliform bacteria | 0 n/(100mL) | ≤ 0 mL) | within the limit |
| pH | 7.4 unité pH | 6.5–9 unité pH | within the limit |
| Water hardness | 39 °f | no limit | for reference |
| Electrical conductivity | 779 µS/cm | 200–1,100 µS/cm | within the limit |
| Chloride | 38 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 49 mg/L | ≤ 250 mg/L | within the limit |
| Sodium | 21 mg/L | ≤ 200 mg/L | within the limit |
| Iron | 39 µg/L | ≤ 200 µg/L | within the limit |
| Turbidity | 0.81 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in Saint-Gervais-les-Trois-Clochers safe to drink?
Yes. At the check on 16 July 2026, the tap water in Saint-Gervais-les-Trois-Clochers was within every limit tested. “Eau d'alimentation conforme aux limites de qualité et non conforme aux références de qualité. A noter une température dépassant la référence guide de 25°C. ”
How high are PFAS levels in Saint-Gervais-les-Trois-Clochers's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at 7.2 ng/L. The EU limit is 100 ng/L, so this water is at 7 % of the limit. (below the EU limit)
Does the water in Saint-Gervais-les-Trois-Clochers also meet the strictest limits in Europe?
Yes. Even against Europe's strictest legal limit, Sweden's 4 ng/L in force since 2026, the measured value of 4 ng/L stays below.
Are PFAS levels rising in Saint-Gervais-les-Trois-Clochers's tap water?
Yes. On the main network, the PFAS-4 sum rose from 1.9 ng/L (22 May 2025) to 4 ng/L (21 May 2026) across 4 quantified checks. pfasnearme's benchmark is 0.5 ng/L as an annual mean.
How hard is the water in Saint-Gervais-les-Trois-Clochers?
The water hardness in Saint-Gervais-les-Trois-Clochers is 39 °f (hard). 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 21 September 2026.
Same water network
Same distribution network as Saint-Gervais-les-Trois-Clochers, so in principle the same water.
Nearby communes
The closest to Saint-Gervais-les-Trois-Clochers on this site.
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=86224
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 21 September 2026
- Supply networks
- VAUX SV VAUX, VAUX SV ST GERVAIS
Water report for Saint-Gervais-les-Trois-Clochers
Get new PFAS results for Saint-Gervais-les-Trois-Clochers, with a short explanation. At most one update a week, only when there's something new.
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.