PFAS in Sainte-Foy-la-Longue's tap water: under 6 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 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.
Sample taken in Caudrot, on the same distribution network as Sainte-Foy-la-Longue (CAUDROT). 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.
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 2 April 2025
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide perfluoro-octanoïque (PFOA) | <0,002 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,005 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,002 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | <0,001 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,005 µg/L |
| Perfluorohexane sulfonate (PFHXS) | <0,001 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,005 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,005 µg/L |
| Acide perfluorohexanoïque (PFHXA) | <0,002 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,005 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,005 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,002 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,002 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,002 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,005 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,005 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,005 µg/L |
| Acide perfluoropentanoïque (PFPEA) | <0,002 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | <0,002 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,005 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 Sainte-Foy-la-Longue
Get new PFAS results for Sainte-Foy-la-Longue, 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
- 2 April 2025
- Water supplier
- SO.GE.DO.
In Sainte-Foy-la-Longue, none of the 4 most closely watched PFAS (PFAS-4) was detected at the latest PFAS check on 2 April 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: <SEUIL µg/L, below the EU legal limit (100 ng/L). Sampled in Caudrot, 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 Sainte-Foy-la-Longue
A single PFAS check has been published for Sainte-Foy-la-Longue so far (2 April 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.
Values to watch
These results are close to their legal limit, or over it.
Outside a reference value: Electrical conductivity 1,144 µS/cm on 14 October 2025 (reference 200–1,100 µS/cm). These are indicator parameters with reference values, not legal limits.
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Fluoride | 1.4 mg/L | ≤ 1.5 mg/L | within the limit |
| Electrical conductivity | 1,144 µS/cm | 200–1,100 µS/cm | above the reference value |
See all 15 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrite | <0,01 mg/L | ≤ 0.5 mg/L | within the limit |
| Lead | <0,5 µg/L | ≤ 10 µg/L | within the limit |
| Copper | 0.005 mg(Cu)/L | ≤ 2 mg(Cu)/L | within the limit |
| Nickel | <0,5 µg/L | ≤ 20 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 | 1.4 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 | 7.7 unité pH | 6.5–9 unité pH | within the limit |
| Electrical conductivity | 1,144 µS/cm | 200–1,100 µS/cm | above the reference value |
| Sulphate | 220 mg/L | ≤ 250 mg/L | within the limit |
| Iron | 15 µg/L | ≤ 200 µg/L | within the limit |
| Turbidity | 0.25 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in Sainte-Foy-la-Longue safe to drink?
Yes. At the check on 14 October 2025, the tap water in Sainte-Foy-la-Longue was within every limit tested. Outside a reference value: Electrical conductivity 1,144 µS/cm on 14 October 2025 (reference 200–1,100 µS/cm). These are indicator parameters with reference values, not legal limits. “Eau d'alimentation conforme aux limites de qualité des eaux destinées à la consommation humaine pour l'ensemble des paramètres mesurés et ne satisfaisant pas à la référence de qualité concernant le paramètre conductivité à 25°C.”
How high are PFAS levels in Sainte-Foy-la-Longue's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at –. The EU limit is 100 ng/L, so this water is at – of the limit. (below the EU limit)
Does the water in Sainte-Foy-la-Longue 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 Sainte-Foy-la-Longue?
No hardness value is available for Sainte-Foy-la-Longue in this source.
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 Sainte-Foy-la-Longue, so in principle the same water.
Nearby communes
The closest to Sainte-Foy-la-Longue 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=33403
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 12 September 2026
- Supply networks
- CAUDROT
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.