Drinking water quality in Messimy
PFAS in drinking water
The total of 20 PFAS ("forever chemicals") was last measured at 0.1214 µg/L. The EU limit is 0.1 µg/L, so this water is at 121 % of the limit. (7 June 2023)
The four most harmful PFAS add up to 0.0285 µg/L. That is 7.1 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 perfluorohexanoïque (PFHXA) | 0.0391 µg/L |
| Acide perfluoropentanoïque (PFPEA) | 0.0272 µg/L |
| Acide perfluoro-octanoïque (PFOA) | 0.0147 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | 0.0118 µg/L |
| Acide perfluorobutanoïque (PFBA) | 0.011 µg/L |
| Perfluorohexane sulfonate (PFHXS) | 0.0076 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | 0.0051 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | 0.0026 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | 0.0012 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | 0.0011 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,001 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,001 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,001 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,01 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,01 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,01 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,01 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,01 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,001 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,01 µg/L |
Water report for Messimy
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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 | 22 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 | <5 µg/L | ≤ 50 µg/L | within limit |
| 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 | 7.3 unité pH | 6.5–9 unité pH | within limit |
| Water hardness | 32.32 °f | no limit | informational |
| Electrical conductivity | 704 µS/cm | 200–1,100 µS/cm | within limit |
| Chloride | 41.5 mg/L | ≤ 250 mg/L | within limit |
| Sulphate | 51 mg/L | ≤ 250 mg/L | within limit |
| Iron | <10 µg/L | ≤ 200 µg/L | within limit |
| Turbidity | 0.1 NFU | ≤ 2 NFU | within limit |
Frequently asked questions
Is tap water in Messimy safe to drink?
Yes. The latest official test (27 May 2026) checked the tap water in Messimy and it passed every requirement.
How high are PFAS levels in Messimy's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at 0.1214 µg/L. The EU limit is 0.1 µg/L, so this water is at 121 % of the limit. (above the EU limit)
Does the water in Messimy also meet the strictest limits in Europe?
No. The four most harmful PFAS add up to 0.0285 µg/L. That is 7.1 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 Messimy?
The water hardness in Messimy is 32.32 °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 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=69131
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 28 August 2026
- Supply networks
- SUD OUEST LYONNAIS, YZERON BOURG
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.