PFAS in Hersin-Coupigny's tap water: 2 ng/L, 4x our 0.5 ng/L benchmark
Last PFAS check: · Source: Hub'eau
PFAS in drinking water
4× 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 Barlin, on the same distribution network as Hersin-Coupigny (SABALFA HAUT SERVICE). 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 85% of the cities we track
checked on 24 March 2026
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide perfluorobutanoïque (PFBA) | 0.01 µg/L |
| Acide perfluoropentanoïque (PFPEA) | 0.002 µg/L |
| Perfluorohexane sulfonate (PFHXS) | 0.001 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | 0.001 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,002 µg/L |
| Acide perfluoro-octanoïque (PFOA) | <0,001 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,001 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,001 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,001 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,002 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,001 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,005 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,001 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,001 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,002 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,001 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | <0,001 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,001 µg/L |
| Acide perfluorohexanoïque (PFHXA) | <0,002 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,001 µg/L |
Fails a current legal limit. Here are some filter options.
- EU legal limit
- 14 ng/L sum of 20 PFAS, below the 100 ng/L limit
- Last PFAS test
- 24 March 2026
- Water supplier
- C.A.B.B.A.L.R.
In Hersin-Coupigny, the 4 most closely watched PFAS (PFAS-4) add up to 2 ng/L (0.002 µg/L) at the latest PFAS check on 24 March 2026. That's 4 times our 0.5 ng/L health benchmark, but below Sweden's legal limit of 4 ng/L. Sum of 20 PFAS: 14 ng/L (0.014 µg/L), below the EU legal limit (100 ng/L). Sampled in Barlin, on the same network. Source: Hub'eau, Qualité de l'eau potable (Ministère de la Santé / OFB / BRGM).
Details and sources
PFAS over time in Hersin-Coupigny
A single PFAS check has been published for Hersin-Coupigny so far (24 March 2026). A history will build up with the next checks; this page is refreshed weekly.
What the latest check found
At the latest check, the water was over at least one limit.
Values to watch
These results are close to their legal limit, or over it.
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 31.1 mg/L | ≤ 50 mg/L | within the limit |
See all 17 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 31.1 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | <0,01 mg/L | ≤ 0.5 mg/L | within the limit |
| Lead | <2 µg/L | ≤ 10 µg/L | within the limit |
| Copper | 0.013 mg(Cu)/L | ≤ 2 mg(Cu)/L | within the limit |
| Nickel | <5 µg/L | ≤ 20 µg/L | within the limit |
| Cadmium | <1 µg/L | ≤ 5 µg/L | within the limit |
| Chromium | <5 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 | 7.6 unité pH | 6.5–9 unité pH | within the limit |
| Water hardness | 17.43 °f | no limit | for reference |
| Electrical conductivity | 748 µS/cm | 200–1,100 µS/cm | within the limit |
| Chloride | 30.1 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 35.9 mg/L | ≤ 250 mg/L | within the limit |
| Iron | <10 µg/L | ≤ 200 µg/L | within the limit |
| Turbidity | <0,1 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in Hersin-Coupigny safe to drink?
At the latest check, the water was over at least one limit. “Eau d’alimentation non conforme aux limites de qualité en vigueur pour le paramètre fluopyram. Toutefois, cette eau est propre à la consommation humaine car la concentration du pesticide concerné reste inférieure aux valeurs sanitaires. Un contrôle renforcé est mis en place.”
How high are PFAS levels in Hersin-Coupigny's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at 14 ng/L. The EU limit is 100 ng/L, so this water is at 14 % of the limit. (below the EU limit)
Does the water in Hersin-Coupigny 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 ng/L stays below.
How hard is the water in Hersin-Coupigny?
The water hardness in Hersin-Coupigny is 17.4 °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.
Same water network
Same distribution network as Hersin-Coupigny, so in principle the same water.
Nearby communes
The closest to Hersin-Coupigny 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=62443
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 21 September 2026
- Supply networks
- SABALFA HAUT SERVICE
Water report for Hersin-Coupigny
Get new PFAS results for Hersin-Coupigny, 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.