PFAS in Mézières-sur-Couesnon's tap water: under 3.4 ng/L, none of the four main PFAS detected
Last PFAS check: · Source: Hub'eau
PFAS in drinking water
No PFAS detected
The lab sees nothing below 3.4 ng/L, 6.8 times our benchmark of 0.5 ng/L. Water above our benchmark would pass this check unnoticed.
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.
More about this result
The US also limits PFOA and PFOS to 4 ng/L each, per substance.
The lab detects each of the four substances from 0.4 to 1 ng/L upward. None reached that limit, so their total is below 3.4 ng/L rather than zero.
checked on 22 July 2026
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide perfluoro-decanoïque (PFDA) | <0,0010 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,00040 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,00040 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,00040 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,00040 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,0010 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,00040 µg/L |
| Acide perfluorohexanoïque (PFHXA) | <0,0010 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,0050 µg/L |
| Acide perfluoro-octanoïque (PFOA) | <0,0010 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,0010 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | <0,0010 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,00040 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,0010 µg/L |
| Perfluorohexane sulfonate (PFHXS) | <0,00040 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,0010 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | <0,0010 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,00040 µg/L |
| Acide perfluoropentanoïque (PFPEA) | <0,0050 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,00040 µg/L |
None found. The lab sees nothing below 3.4 ng/L, so our 0.5 ng/L benchmark cannot be checked.
Water report for Mézières-sur-Couesnon
Get new PFAS results for Mézières-sur-Couesnon, with a short explanation. At most one update a week, only when there's something new.
- EU legal limit
- none detected sum of 20 PFAS below the detection limit, limit 100 ng/L
- Last PFAS test
- 22 July 2026
- Water supplier
- SPL EBR
In Mézières-sur-Couesnon, none of the 4 most closely watched PFAS (PFAS-4) was detected at the latest PFAS check on 22 July 2026. The total is below 3.4 ng/L, the sum of the detection limits and 6.8 times our 0.5 ng/L benchmark. Sum of 20 PFAS: <SEUIL µg/L, below the EU legal limit (100 ng/L). 7 checks since 24 April 2025: PFAS-4 up to 1.1 ng/L, sometimes below the detection limit. Source: Hub'eau, Qualité de l'eau potable (Ministère de la Santé / OFB / BRGM).
Details and sources
PFAS over time in Mézières-sur-Couesnon
7 PFAS checks since 24 April 2025, values as published. Samples from 2 communes on the same network: it's the same water, so each one applies to Mézières-sur-Couesnon. Samples come from 5 distribution networks. The trend refers to the network “LIFFRE CORMIER_HAUTE CHELLERAIS_MEZIERES SUR COUESNON”.
| Date | PFAS-4 | Sum of 20 PFAS | Sampled at | Network |
|---|---|---|---|---|
| < detection limit | < detection limit | Mézières-sur-Couesnon | LIFFRE CORMIER_HAUTE CHELLERAIS_MEZIERES SUR COUESNON | |
| 0.44 ng/L | 2.35 ng/L | Mézières-sur-Couesnon | 035000475, 035000475 +5 | |
| 1.1 ng/L | 3.64 ng/L | Gahard | LIFFRE CORMIER_HAUTE CHELLERAIS_MEZIERES SUR COUESNON | |
| < detection limit | < detection limit | Mézières-sur-Couesnon | 035000475, 035000475 +5 | |
| < detection limit | < detection limit | Mézières-sur-Couesnon | 035000475, 035000475 +5 | |
| < detection limit | < detection limit | Gahard | LIFFRE CORMIER_HAUTE CHELLERAIS_MEZIERES SUR COUESNON | |
| 0.47 ng/L | 1.19 ng/L | Mézières-sur-Couesnon | 035000475, 035000475 +5 |
“<” 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.
See all 21 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 21.1 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | <0,02 mg/L | ≤ 0.5 mg/L | within the limit |
| Lead | <1,0 µg/L | ≤ 10 µg/L | within the limit |
| Copper | 0.0846 mg(Cu)/L | ≤ 2 mg(Cu)/L | within the limit |
| Nickel | 5.9 µg/L | ≤ 20 µg/L | within the limit |
| Arsenic | 0.42 µg/L | ≤ 10 µg/L | within the limit |
| Cadmium | <0,025 µg/L | ≤ 5 µg/L | within the limit |
| Chromium | <1,0 µg/L | ≤ 50 µg/L | within the limit |
| Uranium | 1.1 µg/L | ≤ 30 µg/L | within the limit |
| Fluoride | 0.075 mg/L | ≤ 1.5 mg/L | within the limit |
| Escherichia coli | 0 n/(100mL) | ≤ 0 mL) | within the limit |
| Enterococci | 0 n/(100mL) | ≤ 0 mL) | within the limit |
| Coliform bacteria | 0 n/(100mL) | ≤ 0 mL) | within the limit |
| pH | 8 unité pH | 6.5–9 unité pH | within the limit |
| Water hardness | 15.6 °f | no limit | for reference |
| Electrical conductivity | 455 µS/cm | 200–1,100 µS/cm | within the limit |
| Chloride | 47.1 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 29.2 mg/L | ≤ 250 mg/L | within the limit |
| Sodium | 25.8 mg/L | ≤ 200 mg/L | within the limit |
| Iron | 20 µg/L | ≤ 200 µg/L | within the limit |
| Turbidity | <0,20 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in Mézières-sur-Couesnon safe to drink?
All the values shown here (22 July 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. Les analyses réalisées sur l'eau traitée ne mettent pas en évidence de traces de toxines algales.”
How high are PFAS levels in Mézières-sur-Couesnon's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at –. The EU limit is 100 ng/L, so this water is at – of the limit. (below the EU limit)
Does the water in Mézières-sur-Couesnon also meet the strictest limits in Europe?
As far as this check can tell, yes. None of the four compounds was quantified, so their total is below 3.4 ng/L, the sum of the laboratory's detection limits, and under Sweden's legal limit of 4 ng/L in force since 2026.
Are PFAS levels rising in Mézières-sur-Couesnon's tap water?
Too few quantified checks to say (1 since 24 April 2025). pfasnearme adds each new publication weekly; a trend needs at least three quantified values.
How hard is the water in Mézières-sur-Couesnon?
The water hardness in Mézières-sur-Couesnon is 15.6 °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.
Nearby communes
The closest to Mézières-sur-Couesnon 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=35178
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 21 September 2026
- Supply networks
- LIFFRE CORMIER_HAUTE CHELLERAIS_MEZIERES SUR COUESNON
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.