PFAS in Port-Sainte-Marie'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 Montpezat, on the same distribution network as Port-Sainte-Marie (SUD DU LOT - PRAYSSAS). 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 1.5 ng/L upward. None reached that limit, so their total is below 6 ng/L rather than zero.
checked on 27 April 2026
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide sulfonique de perfluorobutane (PFBS) | <0,005 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,0015 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,0015 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | <0,0015 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,005 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,0015 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,0015 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | <0,0015 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,0015 µg/L |
| Perfluorohexane sulfonate (PFHXS) | <0,0015 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,0015 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,0015 µg/L |
| Acide perfluorohexanoïque (PFHXA) | <0,0015 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,0015 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,0015 µg/L |
| Acide perfluoro-octanoïque (PFOA) | <0,0015 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,0015 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,005 µg/L |
| Acide perfluoropentanoïque (PFPEA) | <0,0015 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <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 Port-Sainte-Marie
Get new PFAS results for Port-Sainte-Marie, 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
- 27 April 2026
- Water supplier
- SAUR FRANCE
In Port-Sainte-Marie, none of the 4 most closely watched PFAS (PFAS-4) was detected at the latest PFAS check on 27 April 2026. 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 Montpezat, on the same network. 4 checks since 17 June 2025, sum of 20 PFAS always below the detection limit (44 ng/L). Source: Hub'eau, Qualité de l'eau potable (Ministère de la Santé / OFB / BRGM).
Details and sources
PFAS over time in Port-Sainte-Marie
4 PFAS checks since 17 June 2025, from the published measurements. Samples from 3 communes on the same network: it's the same water, so each one applies to Port-Sainte-Marie. Samples come from 2 distribution networks. The trend refers to the network “SUD DU LOT - PRAYSSAS”.
“Calculated”: PFAS-4 worked out from the four substances in the same sample. The chart, averages and trends use lab-published sums only.
| Date | PFAS-4 | Sum of 20 PFAS | Sampled at | Network |
|---|---|---|---|---|
| < 6 ng/L · calculated | < detection limit | Montpezat | SUD DU LOT - PRAYSSAS | |
| < 6 ng/L · calculated | < detection limit | Lafitte-sur-Lot | SUD DU LOT - LAFITTE | |
| < 6 ng/L · calculated | < 44 ng/L | Lafitte-sur-Lot | SUD DU LOT - LAFITTE | |
| < 6 ng/L · calculated | < 44 ng/L | Prayssas | SUD DU LOT - PRAYSSAS |
Calculated values: “<” is an upper bound from published thresholds, “≥” a lower bound, “–” means no published sum or complete measurement. How to read a PFAS result
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 | <1 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | <0,03 mg/L | ≤ 0.5 mg/L | within the limit |
| Lead | 0.18 µg/L | ≤ 10 µg/L | within the limit |
| Copper | 0.005 mg(Cu)/L | ≤ 2 mg(Cu)/L | within the limit |
| Nickel | <0,1 µg/L | ≤ 20 µg/L | within the limit |
| Cadmium | <0,01 µg/L | ≤ 5 µg/L | within the limit |
| Chromium | <0,5 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 | 7.9 unité pH | 6.5–9 unité pH | within the limit |
| Water hardness | 20.7 °f | no limit | for reference |
| Electrical conductivity | 484 µS/cm | 200–1,100 µS/cm | within the limit |
| Chloride | 18 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 47 mg/L | ≤ 250 mg/L | within the limit |
| Iron | 4 µg/L | ≤ 200 µg/L | within the limit |
| Turbidity | <0,1 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in Port-Sainte-Marie safe to drink?
Yes. At the check on 27 April 2026, the tap water in Port-Sainte-Marie 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 Port-Sainte-Marie'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 Port-Sainte-Marie 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.
Are PFAS levels rising in Port-Sainte-Marie's tap water?
Calculated PFAS-4 values are listed in the table. The chart uses laboratory-published sum-of-20 results; there are too few laboratory-published PFAS-4 sums for the existing trend calculation.
How hard is the water in Port-Sainte-Marie?
The water hardness in Port-Sainte-Marie is 20.7 °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 Port-Sainte-Marie, so in principle the same water.
Nearby communes
The closest to Port-Sainte-Marie 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=47210
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 12 September 2026
- Supply networks
- SUD DU LOT - PRAYSSAS, SUD DU LOT - LAFITTE
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.