PFAS in Trébons-sur-la-Grasse's tap water: under 6 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 6 ng/L, 12 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 Sainte-Foy-d'Aigrefeuille, on the same distribution network as Trébons-sur-la-Grasse (MONTAGNE NOIRE). 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 1.5 ng/L upward. None reached that limit, so their total is below 6 ng/L rather than zero.
checked on 15 April 2026
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide perfluoropentane sulfonique (PFPS) | <0,005 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | <0,0015 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,0015 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,005 µg/L |
| Acide perfluoro-octanoïque (PFOA) | <0,0015 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,0015 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,0015 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,0015 µg/L |
| Perfluorohexane sulfonate (PFHXS) | <0,0015 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,005 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,0015 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,005 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,0015 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | <0,0015 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,0015 µg/L |
| Acide perfluoropentanoïque (PFPEA) | <0,0015 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,0015 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,0015 µg/L |
| Acide perfluorohexanoïque (PFHXA) | <0,0015 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,0015 µg/L |
None found. The lab sees nothing below 6 ng/L, so our 0.5 ng/L benchmark cannot be checked.
Water report for Trébons-sur-la-Grasse
Get new PFAS results for Trébons-sur-la-Grasse, 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
- 15 April 2026
- Water supplier
- SMEA RESEAU 31
In Trébons-sur-la-Grasse, none of the 4 most closely watched PFAS (PFAS-4) was detected at the latest PFAS check on 15 April 2026. The total is below 6 ng/L, the sum of the detection limits and 12 times our 0.5 ng/L benchmark. Sum of 20 PFAS: <SEUIL µg/L, below the EU legal limit (100 ng/L). Sampled in Sainte-Foy-d'Aigrefeuille, on the same network. 2 checks since 27 January 2026, PFAS-4 always below the detection limit (6 ng/L). Source: Hub'eau, Qualité de l'eau potable (Ministère de la Santé / OFB / BRGM).
Details and sources
PFAS over time in Trébons-sur-la-Grasse
5 PFAS checks since 7 July 2025, from the published measurements. Samples from 3 communes on the same network: it's the same water, so each one applies to Trébons-sur-la-Grasse.
“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 |
|---|---|---|---|
| < detection limit | < detection limit | Sainte-Foy-d'Aigrefeuille | |
| < 6 ng/L | < 44 ng/L | Villefranche-de-Lauragais | |
| 6 ng/L – < 8 ng/L · calculated | 22 ng/L | Sorèze | |
| 1 ng/L – < 4 ng/L · calculated | 1 ng/L | Sorèze | |
| < 4 ng/L · calculated | < 28 ng/L | Sorèze |
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 13 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 5.9 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | <0,03 mg/L | ≤ 0.5 mg/L | within the limit |
| Cadmium | <0,05 µg/L | ≤ 5 µg/L | within the limit |
| Chromium | <1 µg/L | ≤ 50 µg/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 | 8.2 unité pH | 6.5–9 unité pH | within the limit |
| Water hardness | 9.1 °f | no limit | for reference |
| Electrical conductivity | 221 µS/cm | 200–1,100 µS/cm | within the limit |
| Chloride | 9.4 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 3.4 mg/L | ≤ 250 mg/L | within the limit |
| Turbidity | 0.12 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in Trébons-sur-la-Grasse safe to drink?
Yes. At the check on 30 June 2026, the tap water in Trébons-sur-la-Grasse 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 Trébons-sur-la-Grasse'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 Trébons-sur-la-Grasse 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 6 ng/L, above Sweden's legal limit of 4 ng/L in force since 2026, so a value between the two would go unnoticed.
Are PFAS levels rising in Trébons-sur-la-Grasse's tap water?
Too few quantified checks to say (0 since 7 July 2025). pfasnearme adds each new publication weekly; a trend needs at least three quantified values. These history statistics use laboratory-published sums only.
How hard is the water in Trébons-sur-la-Grasse?
The water hardness in Trébons-sur-la-Grasse is 9.1 °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 Trébons-sur-la-Grasse, so in principle the same water.
Nearby communes
The closest to Trébons-sur-la-Grasse 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=31560
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 12 September 2026
- Supply networks
- MONTAGNE NOIRE
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.