PFAS in Faux-la-Montagne'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 23 March 2026
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,0015 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,005 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,0015 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,0015 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,0015 µg/L |
| Perfluorohexane sulfonate (PFHXS) | <0,0015 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,005 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,0015 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,0015 µg/L |
| Acide perfluorohexanoïque (PFHXA) | <0,0015 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,005 µg/L |
| Acide perfluoro-octanoïque (PFOA) | <0,005 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,0015 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | <0,0015 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,0015 µg/L |
| Acide perfluoropentanoïque (PFPEA) | <0,005 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,0015 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | <0,040 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,005 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <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 Faux-la-Montagne
Get new PFAS results for Faux-la-Montagne, 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
- 23 March 2026
- Water supplier
- SIAEP DE LA HTE VALLEE DE LA CREUSE
In Faux-la-Montagne, none of the 4 most closely watched PFAS (PFAS-4) was detected at the latest PFAS check on 23 March 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). 7 checks since 13 October 2025: sum of 20 PFAS up to 3 ng/L, sometimes 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 Faux-la-Montagne
7 PFAS checks since 13 October 2025, from the published measurements. Samples from 3 communes on the same network: it's the same water, so each one applies to Faux-la-Montagne. Samples come from 6 distribution networks. The trend refers to the network “FAUX LA MONTAGNE ARZAILLERS”.
“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 | Faux-la-Montagne | FAUX LA MONTAGNE ARZAILLERS | |
| 3 ng/L – < 8 ng/L · calculated | 3 ng/L | Faux-la-Montagne | FAUX LA MONTAGNE LE BON MARTIN | |
| < 6 ng/L · calculated | < detection limit | Royère-de-Vassivière | ROYERE DE VASSIVIERE VAUVEIX | |
| < 44 ng/L · calculated | < detection limit | Gentioux-Pigerolles | GENTIOUX LACHAUD | |
| < 44 ng/L · calculated | < detection limit | Gentioux-Pigerolles | GENTIOUX BOURG VERGINAS, GENTIOUX BOURG VERGINAS | |
| < 44 ng/L · calculated | < detection limit | Faux-la-Montagne | FAUX LA MONTAGNE ARZAILLERS | |
| < 44 ng/L · calculated | < detection limit | Faux-la-Montagne | FAUX LA MONTAGNE BOURG |
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.
Values to watch
These results are close to their legal limit, or over it.
Outside a reference value: pH 5.9 unité pH on 22 July 2026 (reference 6.5–9 unité pH), Electrical conductivity 35 µS/cm on 22 July 2026 (reference 200–1,100 µS/cm). These are indicator parameters with reference values, not legal limits.
| What was tested | Value | Limit | Status |
|---|---|---|---|
| pH | 5.9 unité pH | 6.5–9 unité pH | below the reference value |
| Electrical conductivity | 35 µS/cm | 200–1,100 µS/cm | below the reference value |
See all 21 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 4.6 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | <0,01 mg/L | ≤ 0.5 mg/L | within the limit |
| Lead | 0.29 µg/L | ≤ 10 µg/L | within the limit |
| Copper | 0.0026 mg(Cu)/L | ≤ 2 mg(Cu)/L | within the limit |
| Nickel | <0,5 µg/L | ≤ 20 µg/L | within the limit |
| Arsenic | <0,1 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 | 0.11 µg/L | ≤ 30 µg/L | within the limit |
| Fluoride | 0.03 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 | ILLISIBL n/(100mL) | ≤ 0 mL) | no verdict |
| pH | 5.9 unité pH | 6.5–9 unité pH | below the reference value |
| Water hardness | 5.5 °f | no limit | for reference |
| Electrical conductivity | 35 µS/cm | 200–1,100 µS/cm | below the reference value |
| Chloride | 3.6 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 1.6 mg/L | ≤ 250 mg/L | within the limit |
| Sodium | 2.71 mg/L | ≤ 200 mg/L | within the limit |
| Iron | 5.2 µg/L | ≤ 200 µg/L | within the limit |
| Turbidity | <0,3 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in Faux-la-Montagne safe to drink?
Yes. At the check on 22 July 2026, the tap water in Faux-la-Montagne was within every limit tested. Outside a reference value: pH 5.9 unité pH on 22 July 2026 (reference 6.5–9 unité pH), Electrical conductivity 35 µS/cm on 22 July 2026 (reference 200–1,100 µS/cm). These are indicator parameters with reference values, not legal limits. “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 des paramètres pH et conductivité. Cette eau très peu minéralisée, corrosive pour les métaux, nécessite un traitement de neutralisation. De plus, la présence d'une flore interférente importante rend impossible le dénombrement des bactéries coliformes. La mise en place d'une désinfection de l'eau avant la distribution est nécessaire. Un nouveau prélèvement sera réalisé pour vérifier l’évolution de la qualité de l’eau.”
How high are PFAS levels in Faux-la-Montagne'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 Faux-la-Montagne 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 Faux-la-Montagne'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 Faux-la-Montagne?
The water hardness in Faux-la-Montagne is 5.5 °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 21 September 2026.
Same water network
Same distribution network as Faux-la-Montagne, so in principle the same water.
Nearby communes
The closest to Faux-la-Montagne 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=23077
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 21 September 2026
- Supply networks
- FAUX LA MONTAGNE BOURG, FAUX LA MONTAGNE ARZAILLERS, FAUX LA MONTAGNE LE BON MARTIN, ABA -FAUX LA MONTAGNE LOUDOUEINEIX, GENTIOUX BOURG VERGINAS, GENTIOUX LACHAUD, ROYERE DE VASSIVIERE VAUVEIX
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.