PFAS in Longaulnay's tap water: 4.45 ng/L, 8.9x our 0.5 ng/L benchmark
Last PFAS check: · Source: Hub'eau
PFAS in drinking water
8.9× 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 91% of the cities we track
checked on 22 June 2026
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide sulfonique de perfluorooctane (PFOS) | 0.0025 µg/L |
| Perfluorohexane sulfonate (PFHXS) | 0.002 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | 0.0007 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | 0.0006 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,0010 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,0010 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,0010 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,00040 µg/L |
| Acide perfluoro-octanoïque (PFOA) | <0,0010 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,00040 µg/L |
| Acide perfluorohexanoïque (PFHXA) | <0,0010 µg/L |
| Acide perfluoropentanoïque (PFPEA) | <0,0050 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,00040 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | <0,0010 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,00040 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,00040 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,0050 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,0010 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,00040 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,0010 µg/L |
Above our health benchmark. Here are some filter options.
- EU legal limit
- 5.68 ng/L sum of 20 PFAS, below the 100 ng/L limit
- Last PFAS test
- 22 June 2026
- Water supplier
- SAUR 35
In Longaulnay, the 4 most closely watched PFAS (PFAS-4) add up to 4.45 ng/L (0.0045 µg/L) at the latest PFAS check on 22 June 2026. That's 8.9 times our 0.5 ng/L health benchmark, and above Sweden's legal limit of 4 ng/L. Sum of 20 PFAS: 5.68 ng/L (0.0057 µg/L), below the EU legal limit (100 ng/L). 2 checks since 31 July 2025: PFAS-4 from 3.81 ng/L to 4.45 ng/L. Source: Hub'eau, Qualité de l'eau potable (Ministère de la Santé / OFB / BRGM).
Details and sources
PFAS over time in Longaulnay
2 PFAS checks since 31 July 2025, values as published.
| Date | PFAS-4 | Sum of 20 PFAS |
|---|---|---|
| 4.45 ng/L | 5.68 ng/L | |
| 3.81 ng/L | 4.71 ng/L |
“<” means not detected, the figure being the detection limit. “–” means not published. Labs have only reported the PFAS-4 sum (SANDRE code 9268) since autumn 2025. How to read a PFAS result
What the latest check found
At the latest check, the water was within every limit tested.
See all 21 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 9.6 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | <0,02 mg/L | ≤ 0.5 mg/L | within the limit |
| Lead | <1,0 µg/L | ≤ 10 µg/L | within the limit |
| Copper | 0.0229 mg(Cu)/L | ≤ 2 mg(Cu)/L | within the limit |
| Nickel | <1,0 µg/L | ≤ 20 µg/L | within the limit |
| Arsenic | <0,20 µg/L | ≤ 10 µg/L | within the limit |
| Cadmium | <0,025 µg/L | ≤ 5 µg/L | within the limit |
| Chromium | <1,0 µg/L | ≤ 50 µg/L | within the limit |
| Uranium | <0,50 µg/L | ≤ 30 µg/L | within the limit |
| Fluoride | 0.152 mg/L | ≤ 1.5 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 | 7.9 unité pH | 6.5–9 unité pH | within the limit |
| Water hardness | 15.7 °f | no limit | for reference |
| Electrical conductivity | 542 µS/cm | 200–1,100 µS/cm | within the limit |
| Chloride | 31.2 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 46.1 mg/L | ≤ 250 mg/L | within the limit |
| Sodium | 36.7 mg/L | ≤ 200 mg/L | within the limit |
| Iron | <20 µg/L | ≤ 200 µg/L | within the limit |
| Turbidity | <0,20 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in Longaulnay safe to drink?
Yes. At the check on 28 July 2026, the tap water in Longaulnay was within every limit tested. “Eau d'alimentation conforme aux exigences de qualité en vigueur pour l'ensemble des paramètres mesurés.”
How high are PFAS levels in Longaulnay's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at 5.68 ng/L. The EU limit is 100 ng/L, so this water is at 6 % of the limit. (below the EU limit)
Does the water in Longaulnay also meet the strictest limits in Europe?
No. The four most harmful PFAS add up to 4.45 ng/L. That is 1.11 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 Longaulnay's tap water?
Too few quantified checks to say (2 since 31 July 2025). pfasnearme adds each new publication weekly; a trend needs at least three quantified values.
How hard is the water in Longaulnay?
The water hardness in Longaulnay is 15.7 °f (medium). 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 Longaulnay 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=35156
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 21 September 2026
- Supply networks
- BRETAGNE ROMANTIQUE_LINQUENIAC_LONGAULNAY
Water report for Longaulnay
Get new PFAS results for Longaulnay, 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.