Drinking water quality in Maintenon
PFAS in drinking water
The total of 20 PFAS ("forever chemicals") was last measured at <0,001 µg/L. The EU limit is 0.1 µg/L, so this water is at 0 % of the limit. (14 April 2026)
The four most harmful PFAS add up to 0 µg/L, below the health limit of 0.004 µg/L used in Sweden since 2026.
Substances too small to measure count as 0, so the real total may be higher.
20 PFAS (see each substance)
| Acide perfluorododécane sulfonique (PFDoDS) | <0,001 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,001 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,002 µg/L |
| Perfluorohexane sulfonate (PFHXS) | <0,001 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,001 µg/L |
| Acide perfluoropentanoïque (PFPEA) | <0,001 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,005 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,001 µg/L |
| Acide perfluorohexanoïque (PFHXA) | <0,002 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | <0,001 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,002 µg/L |
| Acide perfluoro-octanoïque (PFOA) | <0,001 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,001 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,001 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,001 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | <0,001 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,001 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,002 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,002 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,001 µg/L |
Water report for Maintenon
Get the free water report for Maintenon, plus an alert whenever new official results are published.
Official assessment
The latest official test failed at least one quality requirement.
„Eau de qualité bactériologique conforme aux exigences de qualité en vigueur pour l’ensemble des paramètres mesurés. Eau de qualité chimique non conforme en raison du dépassement de la limite de qualité pour le paramètre plomb. Cette teneur en plomb ne vaut que pour le point d'utilisation où elle a été mesurée. Compte tenu de l'influence du réseau de distribution d'eau (réseau intérieur et éventuellement branchement public) sur la dissolution des métaux, cette valeur n’est pas représentative de la qualité de l'eau pour l'ensemble des consommateurs du réseau de distribution.“
Values to watch
These values are at least halfway to their legal limit, or over it.
| Parameter | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 27.5 mg/L | ≤ 50 mg/L | within limit |
| Lead | 40 µg/L | ≤ 10 µg/L | exceeded |
Show all 21 official measurements
| Parameter | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 27.5 mg/L | ≤ 50 mg/L | within limit |
| Nitrite | <0,01 mg/L | ≤ 0.5 mg/L | within limit |
| Lead | 40 µg/L | ≤ 10 µg/L | exceeded |
| Copper | 0.35 mg(Cu)/L | ≤ 2 mg(Cu)/L | within limit |
| Nickel | <5 µg/L | ≤ 20 µg/L | within limit |
| Arsenic | <2 µg/L | ≤ 10 µg/L | within limit |
| Cadmium | <1 µg/L | ≤ 5 µg/L | within limit |
| Chromium | N.M. µg/L | ≤ 6 µg/L | not assessed |
| Uranium | <10 µg/L | ≤ 30 µg/L | within limit |
| Fluoride | 0.15 mg/L | ≤ 1.5 mg/L | within limit |
| Escherichia coli | <1 n/(100mL) | ≤ 0 mL) | within limit |
| Enterococci | <1 n/(100mL) | ≤ 0 mL) | within limit |
| Coliform bacteria | <1 n/(100mL) | ≤ 0 mL) | within limit |
| pH | 7 unité pH | 6.5–9 unité pH | within limit |
| Water hardness | 35.85 °f | no limit | informational |
| Electrical conductivity | 733 µS/cm | 200–1,100 µS/cm | within limit |
| Chloride | 33.5 mg/L | ≤ 250 mg/L | within limit |
| Sulphate | 26.9 mg/L | ≤ 250 mg/L | within limit |
| Sodium | 15.7 mg/L | ≤ 200 mg/L | within limit |
| Iron | <10 µg/L | ≤ 200 µg/L | within limit |
| Turbidity | <0,1 NFU | ≤ 2 NFU | within limit |
Frequently asked questions
Is tap water in Maintenon safe to drink?
The latest official test failed at least one quality requirement.
How high are PFAS levels in Maintenon's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at <0,001 µg/L. The EU limit is 0.1 µg/L, so this water is at 0 % of the limit. (below the EU limit)
Does the water in Maintenon also meet the strictest limits in Europe?
Yes. Even against Europe's strictest limit, the health limit of 0.004 µg/L used in Sweden since 2026, the measured value of 0 µg/L stays below.
How hard is the water in Maintenon?
The water hardness in Maintenon is 35.85 °f (hard). 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 28 August 2026.
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=28227
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 28 August 2026
- Supply networks
- MAINTENON
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.