PFAS in Laval-Roquecezière'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.
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 23 September 2025
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide perfluoro-decanoïque (PFDA) | <0,0015 µg/L |
| Acide perfluoropentanoïque (PFPEA) | <0,0015 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,005 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | <0,0015 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,005 µg/L |
| Acide perfluorohexanoïque (PFHXA) | <0,0015 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,0015 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,005 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | <0,0015 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,0015 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,0015 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,0015 µg/L |
| Perfluorohexane sulfonate (PFHXS) | <0,0015 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,0015 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,0015 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,0015 µg/L |
| Acide perfluoro-octanoïque (PFOA) | <0,0015 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,0015 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,0015 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <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 Laval-Roquecezière
Get new PFAS results for Laval-Roquecezière, 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
- 23 September 2025
- Water supplier
- MAIRIE DE LAVAL-ROQUECEZIERE
In Laval-Roquecezière, none of the 4 most closely watched PFAS (PFAS-4) was detected at the latest PFAS check on 23 September 2025. 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: <0,044 µg/L, below the EU legal limit (100 ng/L). Source: Hub'eau, Qualité de l'eau potable (Ministère de la Santé / OFB / BRGM).
Details and sources
PFAS over time in Laval-Roquecezière
A single PFAS check has been published for Laval-Roquecezière so far (23 September 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.
Values to watch
These results are close to their legal limit, or over it.
Outside a reference value: Coliform bacteria 2 n/(100mL) on 22 June 2026 (reference ≤ 0 mL)), pH 9.7 unité pH on 22 June 2026 (reference 6.5–9 unité pH), Electrical conductivity 74 µS/cm on 22 June 2026 (reference 200–1,100 µS/cm). These are indicator parameters with reference values, not legal limits.
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Coliform bacteria | 2 n/(100mL) | ≤ 0 mL) | above the reference value |
| pH | 9.7 unité pH | 6.5–9 unité pH | above the reference value |
| Electrical conductivity | 74 µS/cm | 200–1,100 µS/cm | below the reference value |
See all 20 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 2.9 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | <0,01 mg/L | ≤ 0.5 mg/L | within the limit |
| Lead | 3.6 µg/L | ≤ 10 µg/L | within the limit |
| Copper | 0.317 mg(Cu)/L | ≤ 2 mg(Cu)/L | within the limit |
| Nickel | 2.1 µg/L | ≤ 20 µg/L | within the limit |
| Arsenic | <0,05 µg/L | ≤ 10 µg/L | within the limit |
| Cadmium | <0,02 µg/L | ≤ 5 µg/L | within the limit |
| Chromium | <0,2 µg/L | ≤ 50 µg/L | within the limit |
| Fluoride | <0,1 mg/L | ≤ 1.5 mg/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 | 2 n/(100mL) | ≤ 0 mL) | above the reference value |
| pH | 9.7 unité pH | 6.5–9 unité pH | above the reference value |
| Water hardness | 2.7 °f | no limit | for reference |
| Electrical conductivity | 74 µS/cm | 200–1,100 µS/cm | below the reference value |
| Chloride | 3.5 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 3.2 mg/L | ≤ 250 mg/L | within the limit |
| Sodium | 2.37 mg/L | ≤ 200 mg/L | within the limit |
| Iron | 5 µg/L | ≤ 200 µg/L | within the limit |
| Turbidity | 0.16 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in Laval-Roquecezière safe to drink?
Yes. At the check on 22 June 2026, the tap water in Laval-Roquecezière was within every limit tested. Outside a reference value: Coliform bacteria 2 n/(100mL) on 22 June 2026 (reference ≤ 0 mL)), pH 9.7 unité pH on 22 June 2026 (reference 6.5–9 unité pH), Electrical conductivity 74 µS/cm on 22 June 2026 (reference 200–1,100 µS/cm). These are indicator parameters with reference values, not legal limits. “Eau d'alimentation conforme aux limites de qualité et non conforme aux références de qualité. La non-conformité concerne au moins un paramètre microbiologique et n' a toutefois pas nécessité de restriction de la consommation de l'eau. Il a été demandé à l'exploitant de prendre les mesures correctives né cessaires pour rétablir la qualité de l'eau. De plus, l'eau présente un caractère agressif, susceptible de favorise r la dissolution des métaux, notamment le plomb s'il est constitutif des branchements publics ou des réseaux privés. Dans ce cas, il est recommandé de laisser couler l'eau avant de l'utiliser à des fins alimentaires.”
How high are PFAS levels in Laval-Roquecezière's drinking water?
At the latest check the total of 20 PFAS ("forever chemicals") was below the laboratory's reporting limit of 44 ng/L. The EU limit is 100 ng/L, so this water is under 44 % of the limit. (below the EU limit)
Does the water in Laval-Roquecezière 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.
How hard is the water in Laval-Roquecezière?
The water hardness in Laval-Roquecezière is 2.7 °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.
Nearby communes
The closest to Laval-Roquecezière 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=12125
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 12 September 2026
- Supply networks
- ROQUECEZIERE, SAINT-CRÉPIN, HAMEAU DE LA PERIÈRE
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.