Drinking water quality in Nonancourt
PFAS in drinking water
The total of 20 PFAS ("forever chemicals") was last measured at 0.0028 µg/L. The EU limit is 0.1 µg/L, so this water is at 3 % of the limit. (15 July 2025)
This source does not list each PFAS substance separately, so we cannot compare this water with the health limit.
Water report for Nonancourt
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Official assessment
The latest official test failed at least one quality requirement.
„Eau d'alimentation non conforme aux exigences de qualité fixées pour le chlorothalonil R417888 et la terbuthylazine LM6. Les concentrations mesurées dans le cadre du contrôle renforcé sont inférieures à leurs valeurs sanitaires transitoires respectives, fixées à 3 et 1 µg/L, par le ministère de la santé. De plus, la valeur indicative de 0,9 µg/L définie pour le chlorothalonil R471811 n’est pas satisfaite. L'eau peut être consommée sans restriction d'usage.“
Values to watch
These values are at least halfway to their legal limit, or over it.
| Parameter | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 30.9 mg/L | ≤ 50 mg/L | within limit |
Show all 16 official measurements
| Parameter | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 30.9 mg/L | ≤ 50 mg/L | within limit |
| Nitrite | <0,010 mg/L | ≤ 0.5 mg/L | within limit |
| Lead | <2,0 µg/L | ≤ 10 µg/L | within limit |
| Copper | 0.007 mg/L | ≤ 2 mg/L | within limit |
| Nickel | <1 µg/L | ≤ 20 µg/L | within limit |
| Chromium | <0,50 µg/L | ≤ 50 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 | 7.5 unité pH | 6.5–9 unité pH | within limit |
| Water hardness | 30.6 °f | no limit | informational |
| Electrical conductivity | 689 µS/cm | 200–1,100 µS/cm | within limit |
| Chloride | 28.4 mg/L | ≤ 250 mg/L | within limit |
| Sulphate | 36.3 mg/L | ≤ 250 mg/L | within limit |
| Turbidity | <0,30 NFU | ≤ 1 NFU | within limit |
Frequently asked questions
Is tap water in Nonancourt safe to drink?
The latest official test failed at least one quality requirement.
How high are PFAS levels in Nonancourt's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at 0.0028 µg/L. The EU limit is 0.1 µg/L, so this water is at 3 % of the limit. (below the EU limit)
How hard is the water in Nonancourt?
The water hardness in Nonancourt is 30.6 °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=27438
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 28 August 2026
- Supply networks
- MADELEINE
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.