Drinking water quality in Montmélian
PFAS in drinking water
The total of 20 PFAS ("forever chemicals") was last measured at <0,028 µg/L. The EU limit is 0.1 µg/L, so this water is at 0 % of the limit. (27 June 2025)
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.
5 PFAS (see each substance)
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,002 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,001 µg/L |
| Acide perfluorohexanoïque (PFHXA) | <0,002 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,001 µg/L |
| Acide perfluoro-octanoïque (PFOA) | <0,001 µg/L |
Water report for Montmélian
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Official assessment
The latest official test passed all quality requirements.
„Eau d'alimentation conforme aux exigences de qualité en vigueur pour l'ensemble des paramètres mesurés.“
Show all 19 official measurements
| Parameter | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 8.2 mg/L | ≤ 50 mg/L | within limit |
| Nitrite | <0,03 mg/L | ≤ 0.5 mg/L | within limit |
| Lead | 0.5 µg/L | ≤ 10 µg/L | within limit |
| Copper | 0.312 mg(Cu)/L | ≤ 2 mg(Cu)/L | within limit |
| Nickel | <1 µg/L | ≤ 20 µg/L | within limit |
| Cadmium | <0,10 µg/L | ≤ 5 µg/L | within limit |
| Chromium | <0,50 µg/L | ≤ 50 µg/L | within limit |
| Fluoride | 0.42 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 | 7.6 unité pH | 6.5–9 unité pH | within limit |
| Water hardness | 23.4 °f | no limit | informational |
| Electrical conductivity | 440 µS/cm | 200–1,100 µS/cm | within limit |
| Chloride | 3.53 mg/L | ≤ 250 mg/L | within limit |
| Sulphate | 22.6 mg/L | ≤ 250 mg/L | within limit |
| Sodium | 3.11 mg/L | ≤ 200 mg/L | within limit |
| Iron | <10 µg/L | ≤ 200 µg/L | within limit |
| Turbidity | <0,20 NFU | ≤ 2 NFU | within limit |
Frequently asked questions
Is tap water in Montmélian safe to drink?
Yes. The latest official test (5 June 2026) checked the tap water in Montmélian and it passed every requirement.
How high are PFAS levels in Montmélian's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at <0,028 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 Montmélian 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 Montmélian?
The water hardness in Montmélian is 23.4 °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=73171
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 28 August 2026
- Supply networks
- MONTMELIAN HAUT SERVICE, MONTMELIAN BAS SERVICE, MONTMELIAN LES CALLOUDES
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.