PFAS in Saint-Jean-devant-Possesse's tap water: under 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 4 ng/L, 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 1 ng/L upward. None reached that limit, so their total is below 4 ng/L rather than zero.
checked on 24 June 2025
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,005 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,002 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | <0,001 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,001 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,001 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,001 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,001 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,001 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,001 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,001 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,002 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | <0,001 µg/L |
| Acide perfluorohexanoïque (PFHXA) | <0,002 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,002 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,001 µg/L |
| Perfluorohexane sulfonate (PFHXS) | <0,001 µg/L |
| Acide perfluoro-octanoïque (PFOA) | <0,001 µg/L |
| Acide perfluoropentanoïque (PFPEA) | <0,001 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,001 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,001 µg/L |
Fails a current legal limit. The details are below.
Water report for Saint-Jean-devant-Possesse
Get new PFAS results for Saint-Jean-devant-Possesse, 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
- 24 June 2025
- Water supplier
- MAIRIE DE SAINT JEAN-DEVANT-POSSESS
In Saint-Jean-devant-Possesse, none of the 4 most closely watched PFAS (PFAS-4) was detected at the latest PFAS check on 24 June 2025. The total is below 4 ng/L, the sum of the detection limits and 8 times our 0.5 ng/L benchmark. Sum of 20 PFAS: <0,028 µg/L, below the EU legal limit (100 ng/L). Source: Hub'eau, Qualité de l'eau potable (Ministère de la Santé / OFB / BRGM).
Details and sources
PFAS over time in Saint-Jean-devant-Possesse
A single PFAS check has been published for Saint-Jean-devant-Possesse so far (24 June 2025). 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 | 56.8 mg/L | ≤ 50 mg/L | over the limit |
| Lead | 9.1 µg/L | ≤ 10 µg/L | within the limit |
See all 20 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 56.8 mg/L | ≤ 50 mg/L | over the limit |
| Nitrite | <0,010 mg/L | ≤ 0.1 mg/L | within the limit |
| Lead | 9.1 µg/L | ≤ 10 µg/L | within the limit |
| Copper | 0.08 mg(Cu)/L | ≤ 2 mg(Cu)/L | within the limit |
| Nickel | 0.7 µg/L | ≤ 20 µg/L | within the limit |
| Arsenic | <0,5 µg/L | ≤ 10 µg/L | within the limit |
| Cadmium | <0,5 µg/L | ≤ 5 µg/L | within the limit |
| Chromium | <0,5 µg/L | ≤ 50 µg/L | within the limit |
| Fluoride | 0.147 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 | 7.6 unité pH | 6.5–9 unité pH | within the limit |
| Water hardness | 38.2 °f | no limit | for reference |
| Electrical conductivity | 705 µS/cm | 200–1,100 µS/cm | within the limit |
| Chloride | 17.3 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 24.6 mg/L | ≤ 250 mg/L | within the limit |
| Sodium | 8.2 mg/L | ≤ 200 mg/L | within the limit |
| Iron | 5.2 µg/L | ≤ 200 µg/L | within the limit |
| Turbidity | 0.36 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in Saint-Jean-devant-Possesse safe to drink?
At the latest check, the water was over at least one limit. “L’eau distribuée est NON CONFORME sur le plan physico-chimique. Des dépassements ont été observés pour plusieurs paramètres : les pesticides dépassent l’exigence réglementaire de 0,1 µg/l sans atteindre les valeurs imposant une restriction des usages sanitaires ; la teneur en FLUORURES dépasse la limite de qualité de 1 500 µg/l pour le forage F2002, tandis que les NITRATES sont supérieurs à la limite de qualité fixée à 50 mg/l pour le forage F1964. Un contrôle renforcé est en place et des actions correctives sont engagées par l’exploitant pour rétablir la qualité de l’eau. Compte tenu de l’utilisation alternée des forages, l’eau ne doit pas être consommée par les nourrissons et les femmes enceintes et est déconseillée pour les enfants de moins de 12 ans. Enfin, on note une valeur de CHLORE LIBRE élevée. La concentration en chlore devra être maintenue inférieure à 0,5 mg/l sur le réseau de distribution.”
How high are PFAS levels in Saint-Jean-devant-Possesse's drinking water?
At the latest check the total of 20 PFAS ("forever chemicals") was below the laboratory's reporting limit of 28 ng/L. The EU limit is 100 ng/L, so this water is under 28 % of the limit. (below the EU limit)
Does the water in Saint-Jean-devant-Possesse 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 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.
How hard is the water in Saint-Jean-devant-Possesse?
The water hardness in Saint-Jean-devant-Possesse is 38.2 °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 12 September 2026.
Nearby communes
The closest to Saint-Jean-devant-Possesse 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=51489
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 12 September 2026
- Supply networks
- SAINT JEAN DEVANT POSSESSE
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.