PFAS in Mailley-et-Chazelot's tap water: 3 ng/L, 6x our 0.5 ng/L benchmark
Last PFAS check: · Source: Hub'eau
PFAS in drinking water
6× 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 88% of the cities we track
checked on 15 July 2026
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide perfluoropentanoïque (PFPEA) | 0.031 µg/L |
| Acide perfluorohexanoïque (PFHXA) | 0.016 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | 0.013 µg/L |
| Acide perfluorobutanoïque (PFBA) | 0.009 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | 0.001 µg/L |
| Perfluorohexane sulfonate (PFHXS) | 0.001 µg/L |
| Acide perfluoro-octanoïque (PFOA) | 0.001 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,002 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,002 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,002 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,001 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,001 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,001 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,001 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,001 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,005 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,001 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,001 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,001 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,001 µg/L |
Above our health benchmark. Here are some filter options.
- EU legal limit
- 72 ng/L sum of 20 PFAS, below the 100 ng/L limit
- Last PFAS test
- 15 July 2026
- Water supplier
- MAIRIE DE MAILLEY ET CHAZELOT
In Mailley-et-Chazelot, the 4 most closely watched PFAS (PFAS-4) add up to 3 ng/L (0.003 µg/L) at the latest PFAS check on 15 July 2026. That's 6 times our 0.5 ng/L health benchmark, but below Sweden's legal limit of 4 ng/L. Sum of 20 PFAS: 72 ng/L (0.072 µg/L), below the EU legal limit (100 ng/L). 2 checks since 22 June 2026: PFAS-4 from 3 ng/L to 3 ng/L. Source: Hub'eau, Qualité de l'eau potable (Ministère de la Santé / OFB / BRGM).
Details and sources
PFAS over time in Mailley-et-Chazelot
4 PFAS checks since 13 May 2025, from the published measurements. Samples from 2 communes on the same network: it's the same water, so each one applies to Mailley-et-Chazelot.
“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 |
|---|---|---|---|
| 3 ng/L | 72 ng/L | Mailley-et-Chazelot | |
| 3 ng/L | 76 ng/L | Échenoz-la-Méline | |
| 2 ng/L – < 4 ng/L · calculated | 76 ng/L | Échenoz-la-Méline | |
| 1 ng/L – < 4 ng/L · calculated | 82 ng/L | Mailley-et-Chazelot |
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 21 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 10 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | <0,020 mg/L | ≤ 0.5 mg/L | within the limit |
| Lead | <2 µg/L | ≤ 10 µg/L | within the limit |
| Copper | <0,010 mg(Cu)/L | ≤ 2 mg(Cu)/L | within the limit |
| Nickel | <5 µg/L | ≤ 20 µg/L | within the limit |
| Arsenic | <2 µg/L | ≤ 10 µg/L | within the limit |
| Cadmium | <1 µg/L | ≤ 5 µg/L | within the limit |
| Chromium | <5 µg/L | ≤ 50 µg/L | within the limit |
| Uranium | <10 µg/L | ≤ 30 µg/L | within the limit |
| Fluoride | 0.13 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 | <1 n/(100mL) | ≤ 0 mL) | within the limit |
| pH | 8.1 unité pH | 6.5–9 unité pH | within the limit |
| Water hardness | 13.2 °f | no limit | for reference |
| Electrical conductivity | 286 µS/cm | 200–1,100 µS/cm | within the limit |
| Chloride | 6 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 7.2 mg/L | ≤ 250 mg/L | within the limit |
| Sodium | 7.6 mg/L | ≤ 200 mg/L | within the limit |
| Iron | <10 µg/L | ≤ 200 µg/L | within the limit |
| Turbidity | <0,50 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in Mailley-et-Chazelot safe to drink?
Yes. At the check on 15 July 2026, the tap water in Mailley-et-Chazelot was within every limit tested. “Eau d'alimentation conforme aux exigences de qualité en vigueur pour l'ensemble des paramètres mesurés le jour du prélèvement. L'eau peut provoquer un léger entartrage des réseaux et surtout des organes stockant et véhiculant l'eau chaude. Une surveillance anticipée de certains paramètres émergents, dont les per- et polyfluoroalkylées (PFAS), a été mise en place par l’ARS. Les résultats de ce suivi ont montré des valeurs supérieures à la limite d e qualité fixée à 0,1 µg/l pour la somme des PFAS. La collectivité a engagé, en lien avec l’ARS et la préfecture, un plan d’action pour rétablir la qualité de l’eau. Les modalités de gestion sont basées sur l’application du principe de proportionnalité au regard des connaissances et expertises du moment et ne conduisent pas, à ce stade, à prononcer des restrictions d’usages de l’eau. Pour plus d’informations sur les PFAS, vous pouvez consulter le site internet de l’ARS : https://www.bourgogne-franche-comte.ars.sante.fr/les-pfas-en-bourgogne -franche-comte. L'eau peut être consommée.”
How high are PFAS levels in Mailley-et-Chazelot's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at 72 ng/L. The EU limit is 100 ng/L, so this water is at 72 % of the limit. (below the EU limit)
Does the water in Mailley-et-Chazelot also meet the strictest limits in Europe?
Yes. Even against Europe's strictest legal limit, Sweden's 4 ng/L in force since 2026, the measured value of 3 ng/L stays below.
Are PFAS levels rising in Mailley-et-Chazelot's tap water?
Too few quantified checks to say (2 since 13 May 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 Mailley-et-Chazelot?
The water hardness in Mailley-et-Chazelot is 13.2 °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.
Nearby communes
The closest to Mailley-et-Chazelot 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=70324
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 21 September 2026
- Supply networks
- MAILLEY ET CHAZELOT
Water report for Mailley-et-Chazelot
Get new PFAS results for Mailley-et-Chazelot, 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.