PFAS in the tap water of Ally (Cantal): 1.5 ng/L, 3x our 0.5 ng/L benchmark
Last PFAS check: · Source: Hub'eau
PFAS in drinking water
3× 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 85% of the cities we track
checked on 1 October 2025
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide sulfonique de perfluorooctane (PFOS) | 0.0015 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,0010 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,0050 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,010 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,0050 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,0050 µg/L |
| Acide perfluoro-octanoïque (PFOA) | <0,0010 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,0010 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,0050 µg/L |
| Acide perfluorohexanoïque (PFHXA) | <0,0010 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,010 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,0010 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | <0,0010 µg/L |
| Acide perfluoropentanoïque (PFPEA) | <0,0010 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,010 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,0050 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,0050 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,0010 µg/L |
| Perfluorohexane sulfonate (PFHXS) | <0,0010 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,0010 µg/L |
Above our health benchmark. Here are some filter options.
- EU legal limit
- 1.5 ng/L sum of 20 PFAS, below the 100 ng/L limit
- Last PFAS test
- 1 October 2025
- Water supplier
- SYND ALLY - ESCORAILLES
In Ally, the 4 most closely watched PFAS (PFAS-4) add up to 1.5 ng/L (0.0015 µg/L) at the latest PFAS check on 1 October 2025. That's 3 times our 0.5 ng/L health benchmark, but below Sweden's legal limit of 4 ng/L. Sum of 20 PFAS: 1.5 ng/L (0.0015 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 Ally
A single PFAS check has been published for Ally so far (1 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: Electrical conductivity 110 µS/cm on 29 April 2026 (reference 200–1,100 µS/cm). These are indicator parameters with reference values, not legal limits.
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Electrical conductivity | 110 µS/cm | 200–1,100 µS/cm | below the reference value |
See all 20 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 8.1 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | <0,01 mg/L | ≤ 0.5 mg/L | within the limit |
| Lead | 0.95 µg/L | ≤ 10 µg/L | within the limit |
| Copper | 0.073 mg(Cu)/L | ≤ 2 mg(Cu)/L | within the limit |
| Nickel | <0,5 µg/L | ≤ 20 µg/L | within the limit |
| Arsenic | 0.11 µg/L | ≤ 10 µg/L | within the limit |
| Cadmium | <0,01 µg/L | ≤ 5 µg/L | within the limit |
| Chromium | <1 µg/L | ≤ 50 µg/L | within the limit |
| Fluoride | 0.04 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 | 7.3 unité pH | 6.5–9 unité pH | within the limit |
| Water hardness | 4.2 °f | no limit | for reference |
| Electrical conductivity | 110 µS/cm | 200–1,100 µS/cm | below the reference value |
| Chloride | 4.8 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 2.7 mg/L | ≤ 250 mg/L | within the limit |
| Sodium | 5.49 mg/L | ≤ 200 mg/L | within the limit |
| Iron | 59 µg/L | ≤ 200 µg/L | within the limit |
| Turbidity | 0.53 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in Ally safe to drink?
Yes. At the check on 29 April 2026, the tap water in Ally was within every limit tested. Outside a reference value: Electrical conductivity 110 µS/cm on 29 April 2026 (reference 200–1,100 µS/cm). These are indicator parameters with reference values, not legal limits. “Eau de qualité sanitaire satisfaisante, cependant présence d'ESA Metol achlore traduisant la vulnérabilité de la ressource vis à vis des pesticides. Il est demandé au distributeur d'eau d'en identifier préventivement l'origine possible.”
How high are PFAS levels in Ally's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at 1.5 ng/L. The EU limit is 100 ng/L, so this water is at 2 % of the limit. (below the EU limit)
Does the water in Ally also meet the strictest limits in Europe?
Yes. Even against Europe's strictest legal limit, Sweden's 4 ng/L in force since 2026, the measured value of 1.5 ng/L stays below.
How hard is the water in Ally?
The water hardness in Ally is 4.2 °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 Ally, so in principle the same water.
Nearby communes
The closest to Ally 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=15003
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 12 September 2026
- Supply networks
- ALLY - ESCORAILLES-BRAGEAC
Water report for Ally
Get new PFAS results for Ally, 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.