PFAS in Chambost-Allières's tap water: 41 ng/L, 82x our 0.5 ng/L benchmark
Last PFAS check: · Source: Hub'eau
PFAS in drinking water
82× 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 Grandris, on the same distribution network as Chambost-Allières (HAUTE VALLÉE D'AZERGUES). 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 6 July 2026
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide sulfonique de perfluorooctane (PFOS) | 0.021 µg/L |
| Acide perfluoropentanoïque (PFPEA) | 0.012 µg/L |
| Acide perfluoro-octanoïque (PFOA) | 0.01 µg/L |
| Acide perfluorobutanoïque (PFBA) | 0.008 µg/L |
| Acide perfluorohexanoïque (PFHXA) | 0.008 µg/L |
| Perfluorohexane sulfonate (PFHXS) | 0.006 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | 0.005 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | 0.004 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | 0.003 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | 0.001 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,001 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,001 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,001 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,002 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,001 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,002 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,005 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,001 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,002 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,001 µg/L |
Above our health benchmark. Here are some filter options.
- EU legal limit
- 78 ng/L sum of 20 PFAS, below the 100 ng/L limit
- Last PFAS test
- 6 July 2026
- Water supplier
- SUEZ LYONNAISE DES EAUX 69
In Chambost-Allières, the 4 most closely watched PFAS (PFAS-4) add up to 41 ng/L (0.041 µg/L) at the latest PFAS check on 6 July 2026. That's 82 times our 0.5 ng/L health benchmark, and above Sweden's legal limit of 4 ng/L. Sum of 20 PFAS: 78 ng/L (0.078 µg/L), below the EU legal limit (100 ng/L). Sampled in Grandris, on the same network. 2 checks since 16 January 2026: PFAS-4 from 37 ng/L to 41 ng/L. Source: Hub'eau, Qualité de l'eau potable (Ministère de la Santé / OFB / BRGM).
Details and sources
PFAS over time in Chambost-Allières
2 PFAS checks since 16 January 2026, values as published. Samples from 2 communes on the same network: it's the same water, so each one applies to Chambost-Allières.
| Date | PFAS-4 | Sum of 20 PFAS | Sampled at |
|---|---|---|---|
| 41 ng/L | 78 ng/L | Grandris | |
| 37 ng/L | 70 ng/L | Lamure-sur-Azergues |
“<” 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 14 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 12.9 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | <0,01 mg/L | ≤ 0.5 mg/L | within the limit |
| Cadmium | <1 µg/L | ≤ 5 µg/L | within the limit |
| Chromium | <5 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 | 7.1 unité pH | 6.5–9 unité pH | within the limit |
| Water hardness | 24.71 °f | no limit | for reference |
| Electrical conductivity | 582 µS/cm | 200–1,100 µS/cm | within the limit |
| Chloride | 37 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 33.8 mg/L | ≤ 250 mg/L | within the limit |
| Iron | <10 µg/L | ≤ 200 µg/L | within the limit |
| Turbidity | <0,1 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in Chambost-Allières safe to drink?
Yes. At the check on 6 July 2026, the tap water in Chambost-Allières was within every limit tested. “Eau d'alimentation conforme aux exigences de qualité en vigueur pour l'ensemble des paramètres mesurés.”
How high are PFAS levels in Chambost-Allières's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at 78 ng/L. The EU limit is 100 ng/L, so this water is at 78 % of the limit. (below the EU limit)
Does the water in Chambost-Allières also meet the strictest limits in Europe?
No. The four most harmful PFAS add up to 41 ng/L. That is 10.3 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 Chambost-Allières's tap water?
Too few quantified checks to say (2 since 16 January 2026). pfasnearme adds each new publication weekly; a trend needs at least three quantified values.
How hard is the water in Chambost-Allières?
The water hardness in Chambost-Allières is 24.7 °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 Chambost-Allières, so in principle the same water.
Nearby communes
The closest to Chambost-Allières 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=69037
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 21 September 2026
- Supply networks
- HAUTE VALLÉE D'AZERGUES
Water report for Chambost-Allières
Get new PFAS results for Chambost-Allières, 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.