PFAS in Saint-Avertin's tap water: 3.4 ng/L, 6.8x our 0.5 ng/L benchmark
Last PFAS check: · Source: Hub'eau
PFAS in drinking water
6.8× 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.
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 10 July 2026
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide perfluoropentanoïque (PFPEA) | 0.0036 µg/L |
| Acide perfluorobutanoïque (PFBA) | 0.0031 µg/L |
| Acide perfluorohexanoïque (PFHXA) | 0.0023 µg/L |
| Perfluorohexane sulfonate (PFHXS) | 0.0021 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | 0.0015 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | 0.0015 µg/L |
| Acide perfluoro-octanoïque (PFOA) | 0.0013 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,001 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | <0,0015 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,001 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,001 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,0015 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,001 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,001 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,0015 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,0015 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,0015 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,001 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,0015 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,0015 µg/L |
Above our health benchmark. Here are some filter options.
- EU legal limit
- 15 ng/L sum of 20 PFAS, below the 100 ng/L limit
- Last PFAS test
- 10 July 2026
- Water supplier
- TOURS METROPOLE VAL DE LOIRE
In Saint-Avertin, the 4 most closely watched PFAS (PFAS-4) add up to 3.4 ng/L (0.0034 µg/L) at the latest PFAS check on 10 July 2026. That's 6.8 times our 0.5 ng/L health benchmark, but below Sweden's legal limit of 4 ng/L. Sum of 20 PFAS: 15 ng/L (0.015 µg/L), below the EU legal limit (100 ng/L). 8 checks since 10 June 2024: sum of 20 PFAS up to 33 ng/L, sometimes below the detection limit. Source: Hub'eau, Qualité de l'eau potable (Ministère de la Santé / OFB / BRGM).
Details and sources
PFAS over time in Saint-Avertin
8 PFAS checks since 10 June 2024, from the published measurements.
“Calculated”: PFAS-4 worked out from the four substances in the same sample. The chart, averages and trends use lab-published sums only.
| Date | PFAS-4 | Sum of 20 PFAS |
|---|---|---|
| 3.4 ng/L – < 5.9 ng/L · calculated | 15 ng/L | |
| < 3.5 ng/L · calculated | < detection limit | |
| 1.7 ng/L – < 3.2 ng/L · calculated | 1.7 ng/L | |
| 31 ng/L – < 35 ng/L · calculated | 31 ng/L | |
| < 10 ng/L · calculated | < detection limit | |
| < 10 ng/L · calculated | < detection limit | |
| 11 ng/L – < 13 ng/L · calculated | 33 ng/L | |
| < 10 ng/L · calculated | < detection limit |
Calculated values: “<” is an upper bound from published thresholds, “≥” a lower bound, “–” means no published sum or complete measurement. How to read a PFAS result
What the latest check found
At the latest check, the water was within every limit tested.
Values to watch
These results are close to their legal limit, or over it.
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Lead | 6.7 µg/L | ≤ 10 µg/L | within the limit |
See all 21 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 6.4 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | <0,010 mg/L | ≤ 0.1 mg/L | within the limit |
| Lead | 6.7 µg/L | ≤ 10 µg/L | within the limit |
| Copper | 0.0769 mg(Cu)/L | ≤ 2 mg(Cu)/L | within the limit |
| Nickel | 0.9 µg/L | ≤ 20 µg/L | within the limit |
| Arsenic | 3.3 µg/L | ≤ 10 µg/L | within the limit |
| Cadmium | <0,010 µg/L | ≤ 5 µg/L | within the limit |
| Chromium | 0.5 µg/L | ≤ 50 µg/L | within the limit |
| Uranium | 0.6 µg/L | ≤ 30 µg/L | within the limit |
| Fluoride | 0.204 mg/L | ≤ 1.5 mg/L | within the limit |
| Escherichia coli | <1 n/(100mL) | ≤ 0 mL) | within the limit |
| Enterococci | <1 n/(100mL) | ≤ 0 mL) | within the limit |
| Coliform bacteria | <1 n/(100mL) | ≤ 0 mL) | within the limit |
| pH | 7.73 unité pH | 6.5–9.5 pH | within the limit |
| Water hardness | 17.5 °f | no limit | for reference |
| Electrical conductivity | 307 µS/cm | 200–1,100 µS/cm | within the limit |
| Chloride | 25.2 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 21 mg/L | ≤ 250 mg/L | within the limit |
| Sodium | 15.7 mg/L | ≤ 200 mg/L | within the limit |
| Iron | 2 µg/L | ≤ 200 µg/L | within the limit |
| Turbidity | <0,30 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in Saint-Avertin safe to drink?
Yes. At the check on 10 July 2026, the tap water in Saint-Avertin was within every limit tested. “Eau d'alimentation, prélevée au point de mise en distribution, non conforme aux limites de qualité en raison de la teneur élevée en nickel et non conforme aux références de qualité pour la température. Une température élevée de l’eau stimule la croissance des micro-organismes et peut accroître les problèmes liés au goût, à l’odeur, à la coloration et à la corrosion. Le nickel présent dans l'eau d'alimentation provient principalement des accessoires de robinetterie dont les revêtements chromés ne recouvrent pas totalement les parties nickelées. Un nouveau contrôle a été effectué au point de mise en distribution et sur le réseau semaine 31, en application des articles R.1321-17 et R.1321-20 du code de la santé publique. Ces teneurs en nickel ne valent que pour le point d'utilisation où elles ont été mesurées. Ces valeurs ne sont donc pas représentatives de la qualité de l'eau pour l'ensemble du réseau de distribution.”
How high are PFAS levels in Saint-Avertin's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at 15 ng/L. The EU limit is 100 ng/L, so this water is at 15 % of the limit. (below the EU limit)
Does the water in Saint-Avertin 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 3.4 ng/L stays below.
Are PFAS levels rising in Saint-Avertin's tap water?
Calculated PFAS-4 values are listed in the table. The chart uses laboratory-published sum-of-20 results; there are too few laboratory-published PFAS-4 sums for the existing trend calculation.
How hard is the water in Saint-Avertin?
The water hardness in Saint-Avertin is 17.5 °f (medium). 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.
Nearby communes
The closest to Saint-Avertin 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=37208
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 21 September 2026
- Supply networks
- ST AVERTIN
Water report for Saint-Avertin
Get new PFAS results for Saint-Avertin, 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.