PFAS in Arrènes's tap water: under 13 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 13 ng/L, 26 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 1.5 to 5 ng/L upward. None reached that limit, so their total is below 13 ng/L rather than zero.
checked on 11 May 2026
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide perfluoro undecanoïque (PFUnA) | <0,005 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | <0,0015 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,0015 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,0015 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,0015 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,0015 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,005 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,005 µg/L |
| Perfluorohexane sulfonate (PFHXS) | <0,0015 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,0015 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,0015 µg/L |
| Acide perfluorohexanoïque (PFHXA) | <0,0015 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,005 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,0015 µg/L |
| Acide perfluoro-octanoïque (PFOA) | <0,005 µg/L |
| Acide perfluoropentanoïque (PFPEA) | <0,005 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,0015 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | <0,040 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,0015 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,0015 µg/L |
None found. The lab sees nothing below 13 ng/L, so our 0.5 ng/L benchmark cannot be checked.
Water report for Arrènes
Get new PFAS results for Arrènes, 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
- 11 May 2026
- Water supplier
- SIE DE L'ARDOUR
In Arrènes, none of the 4 most closely watched PFAS (PFAS-4) was detected at the latest PFAS check on 11 May 2026. The total is below 13 ng/L, the sum of the detection limits and 26 times our 0.5 ng/L benchmark. Sum of 20 PFAS: <SEUIL µg/L, below the EU legal limit (100 ng/L). 4 checks since 22 September 2025, sum of 20 PFAS always below the detection limit. Source: Hub'eau, Qualité de l'eau potable (Ministère de la Santé / OFB / BRGM).
Details and sources
PFAS over time in Arrènes
4 PFAS checks since 22 September 2025, from the published measurements. Samples from 2 communes on the same network: it's the same water, so each one applies to Arrènes. Samples come from 2 distribution networks. The trend refers to the network “MARSAC-CHAMBORAND”.
“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 |
|---|---|---|---|---|
| < 13 ng/L · calculated | < detection limit | Arrènes | FURSAC-ARRENES | |
| < 13 ng/L · calculated | < detection limit | Marsac | MARSAC-CHAMBORAND | |
| < 6 ng/L · calculated | < detection limit | Arrènes | FURSAC-ARRENES | |
| < 6 ng/L · calculated | < detection limit | Arrènes | MARSAC-CHAMBORAND |
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 21 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 2.6 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | <0,01 mg/L | ≤ 0.5 mg/L | within the limit |
| Lead | 0.14 µg/L | ≤ 10 µg/L | within the limit |
| Copper | 0.0025 mg(Cu)/L | ≤ 2 mg(Cu)/L | within the limit |
| Nickel | <0,5 µg/L | ≤ 20 µg/L | within the limit |
| Arsenic | 0.39 µg/L | ≤ 10 µg/L | within the limit |
| Cadmium | 0.02 µg/L | ≤ 5 µg/L | within the limit |
| Chromium | <1 µg/L | ≤ 50 µg/L | within the limit |
| Uranium | 0.47 µg/L | ≤ 30 µg/L | within the limit |
| Fluoride | 0.12 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 | 8.1 unité pH | 6.5–9.5 pH | within the limit |
| Water hardness | 10.2 °f | no limit | for reference |
| Electrical conductivity | 210 µS/cm | 200–1,100 µS/cm | within the limit |
| Chloride | 4.3 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 1 mg/L | ≤ 250 mg/L | within the limit |
| Sodium | 4.15 mg/L | ≤ 200 mg/L | within the limit |
| Iron | 1.7 µg/L | ≤ 200 µg/L | within the limit |
| Turbidity | <0,3 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in Arrènes safe to drink?
Yes. At the check on 11 May 2026, the tap water in Arrènes was within every limit tested. “Eau d'alimentation conforme aux exigences de qualité définies par le Code de la Santé Publique, pour les paramètres mesurés au moment du prélèvement, à l’exception du paramètre activité radon. La teneur en radon dissous, légèrement supérieure à la référence de qualité, ne justifie pas nécessairement d'actions correctives.”
How high are PFAS levels in Arrènes'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 Arrènes 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 13 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 Arrènes'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 Arrènes?
The water hardness in Arrènes is 10.2 °f (soft). 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 Arrènes, so in principle the same water.
Nearby communes
The closest to Arrènes 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=23006
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 12 September 2026
- Supply networks
- MARSAC-CHAMBORAND, FURSAC-ARRENES
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.