PFAS in Séméacq-Blachon's tap water: under 17 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 17 ng/L, 34 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.
Sample taken in Lespielle, on the same distribution network as Séméacq-Blachon (REGION DE CROUSEILLES). The health authority samples one tap per network; a network carries the same treated water everywhere.
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 2 to 5 ng/L upward. None reached that limit, so their total is below 17 ng/L rather than zero.
checked on 28 August 2025
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide perfluorohexanoïque (PFHXA) | <0,005 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,02 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,005 µg/L |
| Perfluorohexane sulfonate (PFHXS) | <0,002 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,002 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,005 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,005 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,005 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,005 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | <0,005 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,002 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,005 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,005 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,002 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | <0,005 µg/L |
| Acide perfluoro-octanoïque (PFOA) | <0,005 µg/L |
| Acide perfluoropentanoïque (PFPEA) | <0,005 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,005 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,005 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,002 µg/L |
None found. The lab sees nothing below 17 ng/L, so our 0.5 ng/L benchmark cannot be checked.
Water report for Séméacq-Blachon
Get new PFAS results for Séméacq-Blachon, 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
- 28 August 2025
- Water supplier
- SATEG
In Séméacq-Blachon, none of the 4 most closely watched PFAS (PFAS-4) was detected at the latest PFAS check on 28 August 2025. The total is below 17 ng/L, the sum of the detection limits and 34 times our 0.5 ng/L benchmark. Sum of 20 PFAS: <0,1 µg/L, below the EU legal limit (100 ng/L). Sampled in Lespielle, on the same network. Source: Hub'eau, Qualité de l'eau potable (Ministère de la Santé / OFB / BRGM).
Details and sources
PFAS over time in Séméacq-Blachon
A single PFAS check has been published for Séméacq-Blachon so far (28 August 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.
See all 11 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 0.24 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | <0,01 mg/L | ≤ 0.5 mg/L | within the limit |
| Escherichia coli | 0 n/(100mL) | ≤ 0 mL) | within the limit |
| Enterococci | 0 n/(100mL) | ≤ 0 mL) | within the limit |
| Coliform bacteria | 0 n/(100mL) | ≤ 0 mL) | within the limit |
| pH | 8.1 unité pH | 6.5–9 unité pH | within the limit |
| Water hardness | 13.3 °f | no limit | for reference |
| Electrical conductivity | 326 µS/cm | 200–1,100 µS/cm | within the limit |
| Chloride | 11 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 45 mg/L | ≤ 250 mg/L | within the limit |
| Turbidity | <0,5 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in Séméacq-Blachon safe to drink?
Yes. At the check on 4 February 2026, the tap water in Séméacq-Blachon was within every limit tested. “Eau d'alimentation conforme aux exigences de qualité en vigueur pour l'ensemble des paramètres mesurés. Teneur en désinfectant (chlore) insuffisante. Maintenir le taux à 0,1 mg/l en distribution.”
How high are PFAS levels in Séméacq-Blachon's drinking water?
At the latest check the total of 20 PFAS ("forever chemicals") was below the laboratory's reporting limit of 100 ng/L. The EU limit is 100 ng/L, so this water is under 100 % of the limit. (below the EU limit)
Does the water in Séméacq-Blachon 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 17 ng/L, above Sweden's legal limit of 4 ng/L in force since 2026, so a value between the two would go unnoticed.
How hard is the water in Séméacq-Blachon?
The water hardness in Séméacq-Blachon is 13.3 °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 Séméacq-Blachon, so in principle the same water.
Nearby communes
The closest to Séméacq-Blachon 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=64517
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 12 September 2026
- Supply networks
- REGION DE CROUSEILLES
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.