PFAS in the tap water of Saint-Jean-aux-Bois (Oise): 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.
Sample taken in Fresnoy-la-Rivière, on the same distribution network as Saint-Jean-aux-Bois (BONNEUIL-EN-VALOIS). 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 97% of the cities we track
checked on 20 May 2026
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide sulfonique de perfluorooctane (PFOS) | 0.007 µg/L |
| Perfluorohexane sulfonate (PFHXS) | 0.005 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,001 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,002 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,002 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,001 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,001 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | <0,001 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,001 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,005 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,001 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,001 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,001 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,001 µg/L |
| Acide perfluorohexanoïque (PFHXA) | <0,002 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,001 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,002 µg/L |
| Acide perfluoropentanoïque (PFPEA) | <0,001 µg/L |
| Acide perfluoro-octanoïque (PFOA) | <0,001 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,002 µg/L |
Above our health benchmark. Here are some filter options.
- EU legal limit
- 12 ng/L sum of 20 PFAS, below the 100 ng/L limit
- Last PFAS test
- 20 May 2026
- Water supplier
- SAUR FRANCE
In Saint-Jean-aux-Bois, the 4 most closely watched PFAS (PFAS-4) add up to 12 ng/L (0.012 µg/L) at the latest PFAS check on 20 May 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: 12 ng/L (0.012 µg/L), below the EU legal limit (100 ng/L). Sampled in Fresnoy-la-Rivière, on the same network. 2 checks since 28 July 2025: PFAS-4 from 10 ng/L to 12 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-aux-Bois
2 PFAS checks since 28 July 2025, values as published. Samples from 2 communes on the same network: it's the same water, so each one applies to Saint-Jean-aux-Bois. Samples come from 2 distribution networks. The trend refers to the network “BONNEUIL-EN-VALOIS”.
| Date | PFAS-4 | Sum of 20 PFAS | Sampled at | Network |
|---|---|---|---|---|
| 12 ng/L | 12 ng/L | Fresnoy-la-Rivière | BONNEUIL-EN-VALOIS, SAINT-JEAN-AUX-BOIS | |
| 10 ng/L | 10 ng/L | Bonneuil-en-Valois | BONNEUIL-EN-VALOIS |
“<” 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
At the latest check, the water was within every limit tested.
Values to watch
These results are close to their legal limit, or over it.
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 30.1 mg/L | ≤ 50 mg/L | within the limit |
See all 17 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 30.1 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | <0,010 mg/L | ≤ 0.5 mg/L | within the limit |
| Lead | 0.5 µg/L | ≤ 10 µg/L | within the limit |
| Copper | 0.017 mg(Cu)/L | ≤ 2 mg(Cu)/L | within the limit |
| Nickel | 3.1 µg/L | ≤ 20 µg/L | within the limit |
| Cadmium | <0,5 µg/L | ≤ 5 µg/L | within the limit |
| Chromium | 0.9 µg/L | ≤ 50 µg/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 | 39 °f | no limit | for reference |
| Electrical conductivity | 795 µS/cm | 200–1,100 µS/cm | within the limit |
| Chloride | 24.4 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 69.7 mg/L | ≤ 250 mg/L | within the limit |
| Iron | <5 µg/L | ≤ 200 µg/L | within the limit |
| Turbidity | <0,30 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in Saint-Jean-aux-Bois safe to drink?
Yes. At the check on 24 June 2026, the tap water in Saint-Jean-aux-Bois 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 Saint-Jean-aux-Bois's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at 12 ng/L. The EU limit is 100 ng/L, so this water is at 12 % of the limit. (below the EU limit)
Does the water in Saint-Jean-aux-Bois 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 Saint-Jean-aux-Bois's tap water?
Too few quantified checks to say (2 since 28 July 2025). pfasnearme adds each new publication weekly; a trend needs at least three quantified values.
How hard is the water in Saint-Jean-aux-Bois?
The water hardness in Saint-Jean-aux-Bois is 39 °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.
Same water network
Same distribution network as Saint-Jean-aux-Bois, so in principle the same water.
Nearby communes
The closest to Saint-Jean-aux-Bois 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=60579
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 12 September 2026
- Supply networks
- BONNEUIL-EN-VALOIS, SAINT-JEAN-AUX-BOIS
Water report for Saint-Jean-aux-Bois
Get new PFAS results for Saint-Jean-aux-Bois, 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.