PFAS in Les Arcs's tap water: 5 ng/L, 10x our 0.5 ng/L benchmark
Last PFAS check: · Source: Hub'eau
PFAS in drinking water
10× 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.
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 92% of the cities we track
checked on 19 May 2026
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide perfluorohexanoïque (PFHXA) | 0.005 µg/L |
| Acide perfluoro-octanoïque (PFOA) | 0.005 µg/L |
| Acide perfluoropentanoïque (PFPEA) | 0.004 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | 0.002 µg/L |
| Perfluorohexane sulfonate (PFHXS) | <0,001 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,001 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,002 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,002 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,001 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,005 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,001 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | <0,001 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,002 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,001 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,001 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,001 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,001 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,001 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,002 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,001 µg/L |
Above our health benchmark. Here are some filter options.
- EU legal limit
- 16 ng/L sum of 20 PFAS, below the 100 ng/L limit
- Last PFAS test
- 19 May 2026
- Water supplier
- REGIE COMMUNAUTAIRE EDCH DPVA
In Les Arcs, the 4 most closely watched PFAS (PFAS-4) add up to 5 ng/L (0.005 µg/L) at the latest PFAS check on 19 May 2026. That's 10 times our 0.5 ng/L health benchmark, and above Sweden's legal limit of 4 ng/L. Sum of 20 PFAS: 16 ng/L (0.016 µg/L), below the EU legal limit (100 ng/L). 5 checks since 9 December 2024: sum of 20 PFAS from 2 ng/L to 18 ng/L. Source: Hub'eau, Qualité de l'eau potable (Ministère de la Santé / OFB / BRGM).
Details and sources
PFAS over time in Les Arcs
5 PFAS checks since 9 December 2024, from the published measurements. Samples come from 4 distribution networks. The trend refers to the network “ADDUCTION STE ROSELINE (PEICAL)”.
“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 | Network |
|---|---|---|---|
| 5 ng/L | 16 ng/L | ADDUCTION STE ROSELINE (PEICAL) | |
| 4 ng/L – < 7 ng/L · calculated | 18 ng/L | ADDUCTION STE ROSELINE (PEICAL) | |
| 1 ng/L – < 4 ng/L · calculated | 7 ng/L | ADDUC. ARCS STJEAN BAS-VILLAGE | |
| < 4 ng/L · calculated | 2 ng/L | ADDUCTION VILLAGE LES ARCS | |
| 2 ng/L – < 5 ng/L · calculated | 12 ng/L | ADDUCTION COMBAUD |
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
The authorities have not published an overall verdict for this water.
Values to watch
These results are close to their legal limit, or over it.
Outside a reference value: Sulphate 271 mg/L on 20 July 2026 (reference ≤ 250 mg/L). These are indicator parameters with reference values, not legal limits.
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Sulphate | 271 mg/L | ≤ 250 mg/L | above the reference value |
See all 21 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 6.4 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | <0,01 mg/L | ≤ 0.5 mg/L | within the limit |
| Lead | <2 µg/L | ≤ 10 µg/L | within the limit |
| Copper | 0.016 mg(Cu)/L | ≤ 2 mg(Cu)/L | within the limit |
| Nickel | <5 µg/L | ≤ 20 µg/L | within the limit |
| Arsenic | <2 µg/L | ≤ 10 µg/L | within the limit |
| Cadmium | <1 µg/L | ≤ 5 µg/L | within the limit |
| Chromium | N.M. µg/L | ≤ 6 µg/L | no verdict |
| Uranium | <10 µg/L | ≤ 30 µg/L | within the limit |
| Fluoride | 0.22 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 | 7.2 unité pH | 6.5–9 unité pH | within the limit |
| Water hardness | 44.23 °f | no limit | for reference |
| Electrical conductivity | 934 µS/cm | 200–1,100 µS/cm | within the limit |
| Chloride | 201 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 271 mg/L | ≤ 250 mg/L | above the reference value |
| Sodium | 51 mg/L | ≤ 200 mg/L | within the limit |
| Iron | <10 µg/L | ≤ 200 µg/L | within the limit |
| Turbidity | 0.79 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in Les Arcs safe to drink?
The authorities have not published an overall verdict for this water. Outside a reference value: Sulphate 271 mg/L on 20 July 2026 (reference ≤ 250 mg/L). These are indicator parameters with reference values, not legal limits. “Eau conforme aux limites de qualité fixées par le Code de la Santé Publique concernant les eaux destinées à la consommation humaine pour les paramètres recherchés. A noter le dépassement de la référence de qualité pour le paramètre température. Les températures élevées peuvent favoriser les développements microbiens. Des actions doivent être mises en oeuvre afin d'isoler les canalisations pour respecter la référence de qualité.”
How high are PFAS levels in Les Arcs's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at 16 ng/L. The EU limit is 100 ng/L, so this water is at 16 % of the limit. (below the EU limit)
Does the water in Les Arcs also meet the strictest limits in Europe?
No. The four most harmful PFAS add up to 5 ng/L. That is 1.25 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 Les Arcs'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 Les Arcs?
The water hardness in Les Arcs is 44.2 °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 21 September 2026.
Nearby communes
The closest to Les Arcs 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=83004
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 21 September 2026
- Supply networks
- ADDUCTION VILLAGE LES ARCS, ADDUC. ARCS STJEAN BAS-VILLAGE, ADDUCTION COMBAUD, ADDUCTION STE ROSELINE (PEICAL)
Water report for Les Arcs
Get new PFAS results for Les Arcs, 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.