PFAS in Le Blanc-Mesnil's tap water: 12 ng/L, 24x our 0.5 ng/L benchmark
Last PFAS check: · Source: Hub'eau
PFAS in drinking water
24× 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.
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 97% of the cities we track
checked on 25 June 2026
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide perfluoropentanoïque (PFPEA) | 0.006 µg/L |
| Perfluorohexane sulfonate (PFHXS) | 0.006 µg/L |
| Acide perfluorohexanoïque (PFHXA) | 0.006 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | 0.004 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | 0.002 µg/L |
| Acide perfluoro-octanoïque (PFOA) | 0.002 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | 0.002 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,005 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,002 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,002 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,002 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,002 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,002 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,002 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,002 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,005 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,002 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,002 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,002 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,002 µg/L |
Above our health benchmark. Here are some filter options.
- EU legal limit
- 28 ng/L sum of 20 PFAS, below the 100 ng/L limit
- Last PFAS test
- 25 June 2026
- Water supplier
- SUEZ EAU FRANCE
In Le Blanc-Mesnil, the 4 most closely watched PFAS (PFAS-4) add up to 12 ng/L (0.012 µg/L) at the latest PFAS check on 25 June 2026. That's 24 times our 0.5 ng/L health benchmark, and above Sweden's legal limit of 4 ng/L. Sum of 20 PFAS: 28 ng/L (0.028 µg/L), below the EU legal limit (100 ng/L). 9 checks since 14 May 2025: sum of 20 PFAS up to 120 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 Le Blanc-Mesnil
9 PFAS checks since 14 May 2025, from the published measurements. Samples come from 3 distribution networks. The trend refers to the network “UDI BLANC-MESNIL CENTRE”.
“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 | Network |
|---|---|---|---|
| 12 ng/L – < 14 ng/L · calculated | 28 ng/L | UDI BLANC-MESNIL CENTRE | |
| < 8 ng/L · calculated | < 5 ng/L | UDI BLANC-MESNIL OUEST | |
| 10 ng/L – < 12 ng/L · calculated | 10 ng/L | UDI BLANC-MESNIL CENTRE | |
| 54 ng/L – < 56 ng/L · calculated | 120 ng/L | UDI BLANC-MESNIL CENTRE | |
| < 8 ng/L · calculated | < 5 ng/L | UDI BLANC-MESNIL OUEST | |
| < 8 ng/L · calculated | < 5 ng/L | UDI BLANC-MESNIL SUD | |
| 2 ng/L – < 8 ng/L · calculated | 2 ng/L | UDI BLANC-MESNIL CENTRE | |
| 5 ng/L – < 9 ng/L · calculated | 11 ng/L | UDI BLANC-MESNIL CENTRE | |
| < 8 ng/L · calculated | < 5 ng/L | UDI BLANC-MESNIL OUEST |
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
At the latest check, the water was within every limit tested.
See all 21 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 11.7 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | <0,01 mg/L | ≤ 0.5 mg/L | within the limit |
| Lead | 0.1 µg/L | ≤ 10 µg/L | within the limit |
| Copper | 0.0073 mg(Cu)/L | ≤ 2 mg(Cu)/L | within the limit |
| Nickel | 0.7 µg/L | ≤ 20 µg/L | within the limit |
| Arsenic | 0.16 µg/L | ≤ 10 µg/L | within the limit |
| Cadmium | <1,00 µg/L | ≤ 5 µg/L | within the limit |
| Chromium | <5,000 µg/L | ≤ 6 µg/L | within the limit |
| Uranium | 0.7 µg/L | ≤ 30 µg/L | within the limit |
| Fluoride | 0.48 mg/L | ≤ 1.5 mg/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 | 7.8 unité pH | 6.5–9 unité pH | within the limit |
| Water hardness | 36.6 °f | no limit | for reference |
| Electrical conductivity | 573 µS/cm | 200–1,100 µS/cm | within the limit |
| Chloride | 31.1 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 60.4 mg/L | ≤ 250 mg/L | within the limit |
| Sodium | 15 mg/L | ≤ 200 mg/L | within the limit |
| Iron | 110 µg/L | ≤ 200 µg/L | within the limit |
| Turbidity | <0,10 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in Le Blanc-Mesnil safe to drink?
Yes. At the check on 22 July 2026, the tap water in Le Blanc-Mesnil was within every limit tested. “Eau d'alimentation conforme aux exigences de qualité en vigueur pour l'ensemble des paramètres mesurés.”
How high are PFAS levels in Le Blanc-Mesnil's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at 28 ng/L. The EU limit is 100 ng/L, so this water is at 28 % of the limit. (below the EU limit)
Does the water in Le Blanc-Mesnil also meet the strictest limits in Europe?
No. The four most harmful PFAS add up to 12 ng/L. That is 3 times Sweden's legal limit of 4 ng/L, in force since 2026. Germany will set a similar one in 2028. The water still passes the current EU legal limit (100 ng/L for the total of 20 PFAS).
Are PFAS levels rising in Le Blanc-Mesnil'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 Blanc-Mesnil?
The water hardness in Le Blanc-Mesnil is 36.6 °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 September 2026.
Nearby communes
The closest to Le Blanc-Mesnil 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=93007
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 28 September 2026
- Supply networks
- UDI BLANC-MESNIL CENTRE, UDI BLANC-MESNIL SUD, UDI BLANC-MESNIL OUEST
Water report for Le Blanc-Mesnil
Get new PFAS results for Le Blanc-Mesnil, 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.