Drinking water quality in Montfort-le-Gesnois
PFAS in drinking water
The total of 20 PFAS ("forever chemicals") was last measured at <SEUIL µg/L. The EU limit is 0.1 µg/L, so this water is at 0 % of the limit. (6 August 2025)
This source does not list each PFAS substance separately, so we cannot compare this water with the health limit.
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Official assessment
The latest official test passed all quality requirements.
„Eau d'alimentation conforme aux limites de qualité et non conforme aux références de qualité du fait de la température de l'eau supérieur e à 25°C.“
Show all 19 official measurements
| Parameter | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 0.56 mg/L | ≤ 50 mg/L | within limit |
| Nitrite | <0,010 mg/L | ≤ 0.5 mg/L | within limit |
| Lead | 0.4 µg/L | ≤ 10 µg/L | within limit |
| Copper | 0.0065 mg(Cu)/L | ≤ 2 mg(Cu)/L | within limit |
| Nickel | <0,2 µg/L | ≤ 20 µg/L | within limit |
| Arsenic | 0.3 µg/L | ≤ 10 µg/L | within limit |
| Chromium | 0.3 µg/L | ≤ 50 µg/L | within limit |
| Fluoride | 0.072 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 | 7.3 unité pH | 6.5–9 unité pH | within limit |
| Water hardness | 25.8 °f | no limit | informational |
| Electrical conductivity | 517 µS/cm | 200–1,100 µS/cm | within limit |
| Chloride | 19.2 mg/L | ≤ 250 mg/L | within limit |
| Sulphate | 57.7 mg/L | ≤ 250 mg/L | within limit |
| Sodium | 5.8 mg/L | ≤ 200 mg/L | within limit |
| Iron | 21 µg/L | ≤ 200 µg/L | within limit |
| Turbidity | 0.37 NFU | ≤ 2 NFU | within limit |
Frequently asked questions
Is tap water in Montfort-le-Gesnois safe to drink?
Yes. The latest official test (25 June 2026) checked the tap water in Montfort-le-Gesnois and it passed every requirement.
How high are PFAS levels in Montfort-le-Gesnois's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at <SEUIL µg/L. The EU limit is 0.1 µg/L, so this water is at 0 % of the limit. (below the EU limit)
How hard is the water in Montfort-le-Gesnois?
The water hardness in Montfort-le-Gesnois is 25.8 °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 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=72241
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 28 August 2026
- Supply networks
- MONTFORT LE GESNOIS LES SABLONS
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.