PFAS in Le Mesnil-Esnard's tap water: 2.5 ng/L, 5x our 0.5 ng/L benchmark
Last PFAS check: · Source: Hub'eau
PFAS in drinking water
5× 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 Franqueville-Saint-Pierre, on the same distribution network as Le Mesnil-Esnard (PLATEAU EST FRANQUEVILLE). 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 88% of the cities we track
checked on 28 May 2026
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide perfluoropentanoïque (PFPEA) | 0.0062 µg/L |
| Acide perfluorobutanoïque (PFBA) | 0.0056 µg/L |
| Acide perfluorohexanoïque (PFHXA) | 0.0036 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | 0.0015 µg/L |
| Perfluorohexane sulfonate (PFHXS) | 0.0014 µg/L |
| Acide perfluoro-octanoïque (PFOA) | 0.0011 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,001 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,0010 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,001 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,0010 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | <0,0010 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,0010 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,0010 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,001 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,002 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,0010 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,0010 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,002 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,0010 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,005 µg/L |
Above our health benchmark. Here are some filter options.
- EU legal limit
- 19.4 ng/L sum of 20 PFAS, below the 100 ng/L limit
- Last PFAS test
- 28 May 2026
- Water supplier
- METROPOLE ROUEN NORMANDIE
In Le Mesnil-Esnard, the 4 most closely watched PFAS (PFAS-4) add up to 2.5 ng/L (0.0025 µg/L) at the latest PFAS check on 28 May 2026. That's 5 times our 0.5 ng/L health benchmark, but below Sweden's legal limit of 4 ng/L. Sum of 20 PFAS: 19.4 ng/L (0.0194 µg/L), below the EU legal limit (100 ng/L). Sampled in Franqueville-Saint-Pierre, on the same network. 6 checks since 11 February 2025: sum of 20 PFAS from 10.9 ng/L to 37 ng/L. Source: Hub'eau, Qualité de l'eau potable (Ministère de la Santé / OFB / BRGM).
Details and sources
PFAS over time in Le Mesnil-Esnard
6 PFAS checks since 11 February 2025, from the published measurements. Samples from 3 communes on the same network: it's the same water, so each one applies to Le Mesnil-Esnard.
“Calculated”: PFAS-4 worked out from the four substances in the same sample. The chart, averages and trends use lab-published sums only.
| Date | PFAS-4 | Sum of 20 PFAS | Sampled at |
|---|---|---|---|
| 2.5 ng/L – < 4.5 ng/L · calculated | 19.4 ng/L | Franqueville-Saint-Pierre | |
| 1.2 ng/L – < 4.2 ng/L · calculated | 10.9 ng/L | Bonsecours | |
| 5.9 ng/L – < 6.9 ng/L · calculated | 31.2 ng/L | Franqueville-Saint-Pierre | |
| 4.7 ng/L – < 6.7 ng/L · calculated | 37 ng/L | Saint-Aubin-Épinay | |
| 3.3 ng/L – < 5.3 ng/L · calculated | 23 ng/L | Franqueville-Saint-Pierre | |
| 7 ng/L – < 8 ng/L · calculated | 32 ng/L | Franqueville-Saint-Pierre |
Calculated values: “<” is an upper bound from published thresholds, “≥” a lower bound, “–” means no published sum or complete measurement. How to read a PFAS result
What the latest check found
The authorities have not published an overall verdict for this water.
Values to watch
These results are close to their legal limit, or over it.
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 27.7 mg/L | ≤ 50 mg/L | within the limit |
See all 17 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 27.7 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | <0,010 mg/L | ≤ 0.5 mg/L | within the limit |
| Lead | 0.45 µg/L | ≤ 10 µg/L | within the limit |
| Copper | 0.0194 mg(Cu)/L | ≤ 2 mg(Cu)/L | within the limit |
| Nickel | <0,50 µg/L | ≤ 20 µg/L | within the limit |
| Cadmium | <0,10 µg/L | ≤ 5 µg/L | within the limit |
| Chromium | 0.68 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 | 7.3 unité pH | 6.5–9 unité pH | within the limit |
| Water hardness | 31.1 °f | no limit | for reference |
| Electrical conductivity | 684 µS/cm | 200–1,100 µS/cm | within the limit |
| Chloride | 24.1 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 34.2 mg/L | ≤ 250 mg/L | within the limit |
| Iron | <5,0 µg/L | ≤ 200 µg/L | within the limit |
| Turbidity | <0,1 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in Le Mesnil-Esnard safe to drink?
All the values shown here (2 July 2026) are within the legal limits, but the authorities have not published an overall verdict for this water. “Eau d'alimentation conforme, le jour du prélèvement, aux exigences de qualité pour l'ensemble des paramètres mesurés. Nota Bene : Les teneurs ne valent que pour le point d'utilisation où elles ont été mesurées. Compte tenu de l'influence du réseau de distribution d'eau (réseau intérieur et éventuellement branchement public) sur la dissolution des métaux, ces valeurs ne sont pas représentatives de la qualité de l'eau pour l'ensemble des consommateurs du réseau de distribution.”
How high are PFAS levels in Le Mesnil-Esnard's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at 19.4 ng/L. The EU limit is 100 ng/L, so this water is at 19 % of the limit. (below the EU limit)
Does the water in Le Mesnil-Esnard 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 2.5 ng/L stays below.
Are PFAS levels rising in Le Mesnil-Esnard's tap water?
Calculated PFAS-4 values are listed in the table. The chart uses laboratory-published sum-of-20 results; there are too few laboratory-published PFAS-4 sums for the existing trend calculation.
How hard is the water in Le Mesnil-Esnard?
The water hardness in Le Mesnil-Esnard is 31.1 °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 21 September 2026.
Same water network
Same distribution network as Le Mesnil-Esnard, so in principle the same water.
Nearby communes
The closest to Le Mesnil-Esnard 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=76429
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 21 September 2026
- Supply networks
- PLATEAU EST FRANQUEVILLE
Water report for Le Mesnil-Esnard
Get new PFAS results for Le Mesnil-Esnard, 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.