PFAS in Trémentines's tap water: 5.5 ng/L, 11x our 0.5 ng/L benchmark
Last PFAS check: · Source: Hub'eau
PFAS in drinking water
11× 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.
Sample taken in Mauges-sur-Loire, on the same distribution network as Trémentines (MONTJEAN). 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.
One of these four, PFOA, is classified as causing cancer in humans by the WHO's cancer research agency (IARC).
More PFAS than in 93% of the cities we track
checked on 17 June 2026
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide perfluoropentanoïque (PFPEA) | 0.0047 µg/L |
| Acide perfluorobutanoïque (PFBA) | 0.0043 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | 0.0035 µg/L |
| Acide perfluorohexanoïque (PFHXA) | 0.0021 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | 0.002 µg/L |
| Perfluorohexane sulfonate (PFHXS) | 0.0019 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | 0.0011 µg/L |
| Acide perfluoro-octanoïque (PFOA) | 0.0011 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | 0.0005 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,0015 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,0015 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,001 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,0015 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,001 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,001 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,0015 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,0015 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,001 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,0015 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,001 µg/L |
Above our health benchmark. Here are some filter options.
- EU legal limit
- 21 ng/L sum of 20 PFAS, below the 100 ng/L limit
- Last PFAS test
- 17 June 2026
- Water supplier
- VEOLIA EAU
In Trémentines, the 4 most closely watched PFAS (PFAS-4) add up to 5.5 ng/L (0.0055 µg/L) at the latest PFAS check on 17 June 2026. That's 11 times our 0.5 ng/L health benchmark, and above Sweden's legal limit of 4 ng/L. Sum of 20 PFAS: 21 ng/L (0.021 µg/L), below the EU legal limit (100 ng/L). Sampled in Mauges-sur-Loire, on the same network. 4 checks since 24 March 2025: sum of 20 PFAS up to 21 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 Trémentines
4 PFAS checks since 24 March 2025, from the published measurements.
“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 |
|---|---|---|---|
| 5.5 ng/L · calculated | 21 ng/L | Mauges-sur-Loire | |
| 2.9 ng/L – < 3.9 ng/L · calculated | 11 ng/L | Mauges-sur-Loire | |
| 0.9 ng/L – < 3.4 ng/L · calculated | 5 ng/L | Mauges-sur-Loire | |
| < 10 ng/L · calculated | < detection limit | Mauges-sur-Loire |
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.
See all 17 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 4.6 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | <0,010 mg/L | ≤ 0.5 mg/L | within the limit |
| Lead | 0.6 µg/L | ≤ 10 µg/L | within the limit |
| Copper | 0.0126 mg(Cu)/L | ≤ 2 mg(Cu)/L | within the limit |
| Nickel | 0.7 µg/L | ≤ 20 µg/L | within the limit |
| Cadmium | 0.014 µg/L | ≤ 5 µg/L | within the limit |
| Chromium | 0.3 µg/L | ≤ 50 µg/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 | 8.1 unité pH | 6.5–9 unité pH | within the limit |
| Water hardness | 13.4 °f | no limit | for reference |
| Electrical conductivity | 413 µS/cm | 200–1,100 µS/cm | within the limit |
| Chloride | 27.2 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 24.3 mg/L | ≤ 250 mg/L | within the limit |
| Iron | 13 µg/L | ≤ 200 µg/L | within the limit |
| Turbidity | <0,30 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in Trémentines safe to drink?
Yes. At the check on 8 July 2026, the tap water in Trémentines was within every limit tested. “Eau d'alimentation conforme aux limites de qualité et non conforme aux références de qualité.”
How high are PFAS levels in Trémentines's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at 21 ng/L. The EU limit is 100 ng/L, so this water is at 21 % of the limit. (below the EU limit)
Does the water in Trémentines also meet the strictest limits in Europe?
No. The four most harmful PFAS add up to 5.5 ng/L. That is 1.38 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 Trémentines'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 Trémentines?
The water hardness in Trémentines is 13.4 °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 Trémentines, so in principle the same water.
Nearby communes
The closest to Trémentines 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=49355
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 21 September 2026
- Supply networks
- MONTJEAN, LA SEGUINIERE
Water report for Trémentines
Get new PFAS results for Trémentines, 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.