PFAS in Châtonnay's tap water: 42 ng/L, 84x our 0.5 ng/L benchmark
Last PFAS check: · Source: Hub'eau
PFAS in drinking water
84× 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 Tramolé, on the same distribution network as Châtonnay (PONT ECLOSE CCBI). 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.
One of these four, PFOA, is classified as causing cancer in humans by the WHO's cancer research agency (IARC).
More PFAS than in 100% of the cities we track
checked on 26 May 2026
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide perfluoro-octanoïque (PFOA) | 0.021 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | 0.016 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | 0.006 µg/L |
| Acide perfluorohexanoïque (PFHXA) | 0.006 µg/L |
| Perfluorohexane sulfonate (PFHXS) | 0.003 µg/L |
| Acide perfluoropentanoïque (PFPEA) | 0.003 µg/L |
| Acide perfluorobutanoïque (PFBA) | 0.002 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | 0.002 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | 0.001 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,002 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,001 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,002 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,001 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,001 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,001 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,001 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,001 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,001 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,005 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,002 µg/L |
Above our health benchmark. Here are some filter options.
- EU legal limit
- 60 ng/L sum of 20 PFAS, below the 100 ng/L limit
- Last PFAS test
- 26 May 2026
- Water supplier
- CC BIÈVRE ISÈRE
In Châtonnay, the 4 most closely watched PFAS (PFAS-4) add up to 42 ng/L (0.042 µg/L) at the latest PFAS check on 26 May 2026. That's 84 times our 0.5 ng/L health benchmark, and above Sweden's legal limit of 4 ng/L. Sum of 20 PFAS: 60 ng/L (0.06 µg/L), below the EU legal limit (100 ng/L). Sampled in Tramolé, on the same network. 2 checks since 1 April 2026: PFAS-4 from 42 ng/L to 53 ng/L. Source: Hub'eau, Qualité de l'eau potable (Ministère de la Santé / OFB / BRGM).
Details and sources
PFAS over time in Châtonnay
2 PFAS checks since 1 April 2026, values as published. Samples from 2 communes on the same network: it's the same water, so each one applies to Châtonnay.
| Date | PFAS-4 | Sum of 20 PFAS | Sampled at |
|---|---|---|---|
| 42 ng/L | 60 ng/L | Tramolé | |
| 53 ng/L | 70 ng/L | Eclose-Badinières |
“<” 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
The authorities have not published an overall verdict for this water.
Values to watch
These results are close to their legal limit, or over it.
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 35.4 mg/L | ≤ 50 mg/L | within the limit |
See all 16 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 35.4 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | <0,01 mg/L | ≤ 0.5 mg/L | within the limit |
| Lead | <2 µg/L | ≤ 10 µg/L | within the limit |
| Copper | 0.176 mg(Cu)/L | ≤ 2 mg(Cu)/L | within the limit |
| Nickel | <5 µg/L | ≤ 20 µg/L | within the limit |
| Cadmium | <1 µg/L | ≤ 5 µg/L | within the limit |
| Chromium | N.M. µg/L | ≤ 6 µg/L | no verdict |
| 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 | 7.6 unité pH | 6.5–9 unité pH | within the limit |
| Water hardness | 29.77 °f | no limit | for reference |
| Electrical conductivity | 624 µS/cm | 200–1,100 µS/cm | within the limit |
| Chloride | 5.8 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 9.5 mg/L | ≤ 250 mg/L | within the limit |
| Turbidity | <0,1 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in Châtonnay safe to drink?
All the values shown here (8 June 2026) are within the legal limits, but the authorities have not published an overall verdict for this water. “Eau d'alimentation conforme aux exigences de qualité en vigueur pour l'ensemble des paramètres mesurés.”
How high are PFAS levels in Châtonnay's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at 60 ng/L. The EU limit is 100 ng/L, so this water is at 60 % of the limit. (below the EU limit)
Does the water in Châtonnay also meet the strictest limits in Europe?
No. The four most harmful PFAS add up to 42 ng/L. That is 10.5 times Sweden's legal limit of 4 ng/L, in force since 2026. Germany will set a similar one in 2028. The water still passes the current EU legal limit (100 ng/L for the total of 20 PFAS).
Are PFAS levels rising in Châtonnay's tap water?
Too few quantified checks to say (2 since 1 April 2026). pfasnearme adds each new publication weekly; a trend needs at least three quantified values.
How hard is the water in Châtonnay?
The water hardness in Châtonnay is 29.8 °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.
Same water network
Same distribution network as Châtonnay, so in principle the same water.
Nearby communes
The closest to Châtonnay 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=38094
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 21 September 2026
- Supply networks
- PONT ECLOSE CCBI
Water report for Châtonnay
Get new PFAS results for Châtonnay, 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.