PFAS in Puchay's tap water: under 6 ng/L, none of the four main PFAS detected
Last PFAS check: · Source: Hub'eau
PFAS in drinking water
None of the 4 most harmful PFAS detected
The lab sees nothing below 6 ng/L, 12 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 to 2 ng/L upward. None reached that limit, so their total is below 6 ng/L rather than zero.
checked on 11 March 2025
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide perfluoropentanoïque (PFPEA) | 0.0034 µg/L |
| Acide perfluorohexanoïque (PFHXA) | <0,0050 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,0020 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,0010 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,0010 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,0020 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,0050 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,0020 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | <0,0010 µg/L |
| Acide perfluoro-octanoïque (PFOA) | <0,0020 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,0010 µg/L |
| Perfluorohexane sulfonate (PFHXS) | <0,0020 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,0010 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,0010 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,0050 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,0010 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,0020 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | <0,0050 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,0020 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,0010 µg/L |
None found. The lab sees nothing below 6 ng/L, so our 0.5 ng/L benchmark cannot be checked.
Water report for Puchay
Get new PFAS results for Puchay, with a short explanation. At most one update a week, only when there's something new.
- EU legal limit
- 3.4 ng/L sum of 20 PFAS, below the 100 ng/L limit
- Last PFAS test
- 11 March 2025
- Water supplier
- VEOLIA EAU CGE ANDELYS
In Puchay, none of the 4 most closely watched PFAS (PFAS-4) was detected at the latest PFAS check on 11 March 2025. The total is below 6 ng/L, the sum of the detection limits and 12 times our 0.5 ng/L benchmark. Sum of 20 PFAS: 3.4 ng/L (0.0034 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 Puchay
A single PFAS check has been published for Puchay so far (11 March 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 within every limit tested.
See all 17 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 13.1 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | <0,010 mg/L | ≤ 0.5 mg/L | within the limit |
| Arsenic | <0,50 µg/L | ≤ 10 µg/L | within the limit |
| Cadmium | <0,10 µg/L | ≤ 5 µg/L | within the limit |
| Chromium | 0.8 µg/L | ≤ 50 µg/L | within the limit |
| Fluoride | <0,10 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 | 7.6 unité pH | 6.5–9 unité pH | within the limit |
| Water hardness | 26.9 °f | no limit | for reference |
| Electrical conductivity | 544 µS/cm | 200–1,100 µS/cm | within the limit |
| Chloride | 15.2 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 4.76 mg/L | ≤ 250 mg/L | within the limit |
| Sodium | 40.4 mg/L | ≤ 200 mg/L | within the limit |
| Iron | <5,0 µg/L | ≤ 200 µg/L | within the limit |
| Turbidity | 0.37 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in Puchay safe to drink?
Yes. At the check on 17 March 2026, the tap water in Puchay 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 Puchay's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at 3.4 ng/L. The EU limit is 100 ng/L, so this water is at 3 % of the limit. (below the EU limit)
Does the water in Puchay also meet the strictest limits in Europe?
The check cannot say. None of the four compounds was quantified, but the laboratory's detection limits add up to 6 ng/L, above Sweden's legal limit of 4 ng/L in force since 2026, so a value between the two would go unnoticed.
How hard is the water in Puchay?
The water hardness in Puchay is 26.9 °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 12 September 2026.
Same water network
Same distribution network as Puchay, so in principle the same water.
Nearby communes
The closest to Puchay 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=27480
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 12 September 2026
- Supply networks
- COUDRAY EN VEXIN
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.