PFAS in Boisse'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 Montaut, on the same distribution network as Boisse (ISSIGEAC MONTAUT). 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 to 2 ng/L upward. None reached that limit, so their total is below 6 ng/L rather than zero.
checked on 12 May 2026
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide perfluorododécanoique (PFDoDA) | <0,005 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,005 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,002 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | <0,001 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,005 µg/L |
| Acide perfluoropentanoïque (PFPEA) | <0,002 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,005 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,002 µg/L |
| Perfluorohexane sulfonate (PFHXS) | <0,001 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | <0,002 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,005 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,005 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,005 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,002 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,005 µg/L |
| Acide perfluoro-octanoïque (PFOA) | <0,002 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,005 µg/L |
| Acide perfluorohexanoïque (PFHXA) | <0,002 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,002 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,005 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 Boisse
Get new PFAS results for Boisse, 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
- 12 May 2026
- Water supplier
- SAUR FRANCE
In Boisse, none of the 4 most closely watched PFAS (PFAS-4) was detected at the latest PFAS check on 12 May 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 Montaut, on the same network. 2 checks since 28 July 2025, sum of 20 PFAS always 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 Boisse
2 PFAS checks since 28 July 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 |
|---|---|---|---|
| < 6 ng/L · calculated | < detection limit | Montaut | |
| < 6 ng/L · calculated | < detection limit | Montaut |
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 12 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | <0,25 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 | 7.8 unité pH | 6.5–9 unité pH | within the limit |
| Water hardness | 20.3 °f | no limit | for reference |
| Electrical conductivity | 408 µS/cm | 200–1,100 µS/cm | within the limit |
| Chloride | 14 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 12 mg/L | ≤ 250 mg/L | within the limit |
| Iron | <5 µg/L | ≤ 200 µg/L | within the limit |
| Turbidity | <0,5 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in Boisse safe to drink?
Yes. At the check on 12 May 2026, the tap water in Boisse 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 Boisse'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 Boisse 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 Boisse'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 Boisse?
The water hardness in Boisse is 20.3 °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 12 September 2026.
Same water network
Same distribution network as Boisse, so in principle the same water.
Nearby communes
The closest to Boisse 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=24045
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 12 September 2026
- Supply networks
- ISSIGEAC MONTAUT
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.