PFAS in Saint-Hilaire-de-Brens's tap water: 1 ng/L, 2x our 0.5 ng/L benchmark
Last PFAS check: · Source: Hub'eau
PFAS in drinking water
2× 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 Vénérieu, on the same distribution network as Saint-Hilaire-de-Brens (LAC DE MORAS). 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 19 June 2025
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide perfluorohexanoïque (PFHXA) | 0.003 µg/L |
| Acide perfluoro-octanoïque (PFOA) | 0.001 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | <0,001 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | <0,001 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,005 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,002 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,001 µg/L |
| Perfluorohexane sulfonate (PFHXS) | <0,001 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,001 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,001 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,001 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,001 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,001 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,001 µg/L |
| Acide perfluoropentanoïque (PFPEA) | <0,001 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,001 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,002 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,001 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,001 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,002 µg/L |
Fails a current legal limit. Here are some filter options.
- EU legal limit
- 4 ng/L sum of 20 PFAS, below the 100 ng/L limit
- Last PFAS test
- 19 June 2025
- Water supplier
- SIE DE LA PLAINE ET DES COLLINES DU CATELAN
In Saint-Hilaire-de-Brens, the 4 most closely watched PFAS (PFAS-4) add up to 1 ng/L (0.001 µg/L) at the latest PFAS check on 19 June 2025. That's 2 times our 0.5 ng/L health benchmark, but below Sweden's legal limit of 4 ng/L. Sum of 20 PFAS: 4 ng/L (0.004 µg/L), below the EU legal limit (100 ng/L). Sampled in Vénérieu, 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 Saint-Hilaire-de-Brens
A single PFAS check has been published for Saint-Hilaire-de-Brens so far (19 June 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 over at least one limit.
Values to watch
These results are close to their legal limit, or over it.
Outside a reference value: Coliform bacteria 14 n/(100mL) on 20 May 2026 (reference ≤ 0 mL)). These are indicator parameters with reference values, not legal limits.
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 33.2 mg/L | ≤ 50 mg/L | within the limit |
| Escherichia coli | 6 n/(100mL) | ≤ 0 mL) | over the limit |
| Coliform bacteria | 14 n/(100mL) | ≤ 0 mL) | above the reference value |
See all 11 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 33.2 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | 0.01 mg/L | ≤ 0.5 mg/L | within the limit |
| Escherichia coli | 6 n/(100mL) | ≤ 0 mL) | over the limit |
| Enterococci | <1 n/(100mL) | ≤ 0 mL) | within the limit |
| Coliform bacteria | 14 n/(100mL) | ≤ 0 mL) | above the reference value |
| pH | 7.67 unité pH | 6.5–9 unité pH | within the limit |
| Water hardness | 38.78 °f | no limit | for reference |
| Electrical conductivity | 727 µS/cm | 200–1,100 µS/cm | within the limit |
| Chloride | 11 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 21.4 mg/L | ≤ 250 mg/L | within the limit |
| Turbidity | 0.12 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in Saint-Hilaire-de-Brens safe to drink?
At the latest check, the water was over at least one limit. “Eau d'alimentation non-conforme aux exigences de qualité.”
How high are PFAS levels in Saint-Hilaire-de-Brens's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at 4 ng/L. The EU limit is 100 ng/L, so this water is at 4 % of the limit. (below the EU limit)
Does the water in Saint-Hilaire-de-Brens 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 1 ng/L stays below.
How hard is the water in Saint-Hilaire-de-Brens?
The water hardness in Saint-Hilaire-de-Brens is 38.8 °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 12 September 2026.
Same water network
Same distribution network as Saint-Hilaire-de-Brens, so in principle the same water.
Nearby communes
The closest to Saint-Hilaire-de-Brens 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=38392
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 12 September 2026
- Supply networks
- LAC DE MORAS
Water report for Saint-Hilaire-de-Brens
Get new PFAS results for Saint-Hilaire-de-Brens, 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.