PFAS in Les Billanges's tap water: under 4 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 4 ng/L, 8 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 ng/L upward. None reached that limit, so their total is below 4 ng/L rather than zero.
checked on 21 October 2025
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Perfluorohexane sulfonate (PFHXS) | <0,001 µg/L |
| Acide perfluorohexanoïque (PFHXA) | <0,001 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,001 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,001 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,001 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | <0,001 µg/L |
| Acide perfluoropentanoïque (PFPEA) | <0,025 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,001 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,001 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,001 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,001 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,001 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,001 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,001 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,001 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,001 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,05 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,001 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | <0,001 µg/L |
| Acide perfluoro-octanoïque (PFOA) | <0,001 µg/L |
None found. The lab sees nothing below 4 ng/L, so our 0.5 ng/L benchmark cannot be checked.
Water report for Les Billanges
Get new PFAS results for Les Billanges, 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
- 21 October 2025
- Water supplier
- SIE DE L'ARDOUR
In Les Billanges, none of the 4 most closely watched PFAS (PFAS-4) was detected at the latest PFAS check on 21 October 2025. The total is below 4 ng/L, the sum of the detection limits and 8 times our 0.5 ng/L benchmark. Sum of 20 PFAS: <SEUIL µg/L, below the EU legal limit (100 ng/L). Source: Hub'eau, Qualité de l'eau potable (Ministère de la Santé / OFB / BRGM).
Details and sources
PFAS over time in Les Billanges
A single PFAS check has been published for Les Billanges so far (21 October 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: pH 5.9 unité pH on 9 July 2026 (reference 6.5–9 unité pH), Electrical conductivity 93.4 µS/cm on 9 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 | 93.4 µS/cm | 200–1,100 µS/cm | below the reference value |
See all 20 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 22 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | <0,01 mg/L | ≤ 0.5 mg/L | within the limit |
| Lead | 3 µg/L | ≤ 10 µg/L | within the limit |
| Copper | 0.41 mg/L | ≤ 2 mg/L | within the limit |
| Nickel | 2 µg/L | ≤ 20 µg/L | within the limit |
| Arsenic | 3.3 µg/L | ≤ 10 µg/L | within the limit |
| Cadmium | 0.06 µg/L | ≤ 5 µg/L | within the limit |
| Chromium | 0.6 µg/L | ≤ 50 µg/L | within the limit |
| Fluoride | <0,10 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 | 5.9 unité pH | 6.5–9 unité pH | below the reference value |
| Water hardness | 2 °f | no limit | for reference |
| Electrical conductivity | 93.4 µS/cm | 200–1,100 µS/cm | below the reference value |
| Chloride | 6 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | <1 mg/L | ≤ 250 mg/L | within the limit |
| Sodium | 5.6 mg/L | ≤ 200 mg/L | within the limit |
| Iron | 9 µg/L | ≤ 200 µg/L | within the limit |
| Turbidity | <0,3 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in Les Billanges safe to drink?
Yes. At the check on 9 July 2026, the tap water in Les Billanges was within every limit tested. Outside a reference value: pH 5.9 unité pH on 9 July 2026 (reference 6.5–9 unité pH), Electrical conductivity 93.4 µS/cm on 9 July 2026 (reference 200–1,100 µS/cm). These are indicator parameters with reference values, not legal limits. “Eau ne respectant pas les exigences de qualité des eaux destinées à la consommation humaine (pH et conductivité). Eau agressive et corrosive en raison de sa faible minéralisation et de son pH. Risque de teneurs excessives en fer, cuivre voire plomb (en cas de branchements ou de réseaux intérieurs en plomb). Eau nécessitant un traitement de reminé ra lisation avant distribution. A noter également une température supérieure aux exigences de qualité des eaux destinées à la consommation humaine et une présence de nombreuses bactéries revivifiables à 22°C.”
How high are PFAS levels in Les Billanges'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 Les Billanges also meet the strictest limits in Europe?
As far as this check can tell, yes. None of the four compounds was quantified, so their total is below 4 ng/L, the sum of the laboratory's detection limits, and under Sweden's legal limit of 4 ng/L in force since 2026.
How hard is the water in Les Billanges?
The water hardness in Les Billanges is 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 21 September 2026.
Nearby communes
The closest to Les Billanges 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=87016
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 21 September 2026
- Supply networks
- LES BILLANGES
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.