PFAS in Chenonceaux's tap water: 0.7 ng/L, 1.4x our 0.5 ng/L benchmark
Last PFAS check: · Source: Hub'eau
PFAS in drinking water
1.4× 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 Civray-de-Touraine, on the same distribution network as Chenonceaux (CIVRAY DE TOURAINE). 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 82% of the cities we track
checked on 16 December 2025
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide perfluoro-octanoïque (PFOA) | 0.0007 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,0015 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,0015 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,0015 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,0015 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,001 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | <0,001 µg/L |
| Acide perfluoropentanoïque (PFPEA) | <0,0005 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,001 µg/L |
| Acide perfluorohexanoïque (PFHXA) | <0,001 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,001 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,001 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,001 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,001 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,003 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,0015 µg/L |
| Perfluorohexane sulfonate (PFHXS) | <0,0005 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | <0,0015 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,001 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,0015 µg/L |
Above our health benchmark. Here are some filter options.
- EU legal limit
- 0.7 ng/L sum of 20 PFAS, below the 100 ng/L limit
- Last PFAS test
- 16 December 2025
- Water supplier
- CC AUTOUR DE CHENONCEAUX BLERE VAL DE CHER
In Chenonceaux, the 4 most closely watched PFAS (PFAS-4) add up to 0.7 ng/L (0.0007 µg/L) at the latest PFAS check on 16 December 2025. That's 1.4 times our 0.5 ng/L health benchmark, but below Sweden's legal limit of 4 ng/L. Sum of 20 PFAS: 0.7 ng/L (0.0007 µg/L), below the EU legal limit (100 ng/L). Sampled in Civray-de-Touraine, on the same network. Source: Hub'eau, Qualité de l'eau potable (Ministère de la Santé / OFB / BRGM).
Details and sources
PFAS over time in Chenonceaux
A single PFAS check has been published for Chenonceaux so far (16 December 2025). A history will build up with the next checks; this page is refreshed weekly.
What the latest check found
At the latest check, the water was within every limit tested.
See all 17 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 1.6 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | <0,010 mg/L | ≤ 0.5 mg/L | within the limit |
| Lead | 0.7 µg/L | ≤ 10 µg/L | within the limit |
| Copper | 0.0247 mg(Cu)/L | ≤ 2 mg(Cu)/L | within the limit |
| Nickel | 4.1 µg/L | ≤ 20 µg/L | within the limit |
| Cadmium | <0,010 µg/L | ≤ 5 µg/L | within the limit |
| Chromium | 0.7 µg/L | ≤ 50 µg/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 | 7.7 unité pH | 6.5–9 unité pH | within the limit |
| Water hardness | 14.8 °f | no limit | for reference |
| Electrical conductivity | 765 µS/cm | 180–1,000 µS/cm | within the limit |
| Chloride | 99.9 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 47.3 mg/L | ≤ 250 mg/L | within the limit |
| Iron | 145 µg/L | ≤ 200 µg/L | within the limit |
| Turbidity | 0.82 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in Chenonceaux safe to drink?
Yes. At the check on 9 July 2026, the tap water in Chenonceaux was within every limit tested. “Eau d'alimentation conforme aux limites de qualité 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.”
How high are PFAS levels in Chenonceaux's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at 0.7 ng/L. The EU limit is 100 ng/L, so this water is at 0.7 % of the limit. (below the EU limit)
Does the water in Chenonceaux 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 0.7 ng/L stays below.
How hard is the water in Chenonceaux?
The water hardness in Chenonceaux is 14.8 °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 21 September 2026.
Same water network
Same distribution network as Chenonceaux, so in principle the same water.
Nearby communes
The closest to Chenonceaux 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=37070
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 21 September 2026
- Supply networks
- CIVRAY DE TOURAINE
Water report for Chenonceaux
Get new PFAS results for Chenonceaux, 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.