Drinking water quality in Bessenay
PFAS in drinking water
The total of 20 PFAS ("forever chemicals") was last measured at 0.0582 µg/L. The EU limit is 0.1 µg/L, so this water is at 58 % of the limit. (4 May 2023)
The four most harmful PFAS add up to 0.0337 µg/L. That is 8.4 times the health limit of 0.004 µg/L that Sweden made law in 2026. Germany will set a similar limit in 2028.
One of these four, PFOA, is classified as causing cancer in humans by the WHO's cancer research agency (IARC).
Substances too small to measure count as 0, so the real total may be higher.
20 PFAS (see each substance)
| Acide sulfonique de perfluorooctane (PFOS) | 0.0164 µg/L |
| Acide perfluoro-octanoïque (PFOA) | 0.009 µg/L |
| Acide perfluoropentanoïque (PFPEA) | 0.0076 µg/L |
| Acide perfluorohexanoïque (PFHXA) | 0.0058 µg/L |
| Acide perfluorobutanoïque (PFBA) | 0.0054 µg/L |
| Perfluorohexane sulfonate (PFHXS) | 0.0044 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | 0.0041 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | 0.0039 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | 0.0016 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,001 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,001 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,01 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,01 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,01 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,01 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,01 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,001 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,01 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,001 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,001 µg/L |
Water report for Bessenay
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Official assessment
The latest official test passed all quality requirements.
„Eau d'alimentation conforme aux exigences de qualité en vigueur pour l'ensemble des paramètres mesurés.“
Show all 14 official measurements
| Parameter | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 13.6 mg/L | ≤ 50 mg/L | within limit |
| Nitrite | <0,01 mg/L | ≤ 0.5 mg/L | within limit |
| Cadmium | <1 µg/L | ≤ 5 µg/L | within limit |
| Chromium | N.M. µg/L | ≤ 6 µg/L | not assessed |
| Escherichia coli | <1 n/(100mL) | ≤ 0 mL) | within limit |
| Enterococci | <1 n/(100mL) | ≤ 0 mL) | within limit |
| Coliform bacteria | <1 n/(100mL) | ≤ 0 mL) | within limit |
| pH | 7.7 unité pH | 6.5–9 unité pH | within limit |
| Water hardness | 23.19 °f | no limit | informational |
| Electrical conductivity | 516 µS/cm | 200–1,100 µS/cm | within limit |
| Chloride | 26.6 mg/L | ≤ 250 mg/L | within limit |
| Sulphate | 40.2 mg/L | ≤ 250 mg/L | within limit |
| Iron | 30 µg/L | ≤ 200 µg/L | within limit |
| Turbidity | 0.13 NFU | ≤ 2 NFU | within limit |
Frequently asked questions
Is tap water in Bessenay safe to drink?
Yes. The latest official test (3 June 2026) checked the tap water in Bessenay and it passed every requirement.
How high are PFAS levels in Bessenay's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at 0.0582 µg/L. The EU limit is 0.1 µg/L, so this water is at 58 % of the limit. (below the EU limit)
Does the water in Bessenay also meet the strictest limits in Europe?
No. The four most harmful PFAS add up to 0.0337 µg/L. That is 8.4 times the health limit of 0.004 µg/L that Sweden made law in 2026. The water still passes the current EU limit (0.1 µg/L for the total of 20 PFAS).
How hard is the water in Bessenay?
The water hardness in Bessenay is 23.19 °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 28 August 2026.
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=69021
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 28 August 2026
- Supply networks
- MONTS DU LYONNAIS, SAIN BEL
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.