Drinking water quality in Lagny-le-Sec
PFAS in drinking water
The total of 20 PFAS ("forever chemicals") was last measured at 0.002 µg/L. The EU limit is 0.1 µg/L, so this water is at 2 % of the limit. (31 July 2024)
This source does not list each PFAS substance separately, so we cannot compare this water with the health limit.
Water report for Lagny-le-Sec
Get the free water report for Lagny-le-Sec, plus an alert whenever new official results are published.
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 | 2.4 mg/L | ≤ 50 mg/L | within limit |
| Nitrite | <0,010 mg/L | ≤ 0.5 mg/L | within limit |
| Lead | 1.2 µg/L | ≤ 10 µg/L | within limit |
| Copper | 0.031 mg(Cu)/L | ≤ 2 mg(Cu)/L | within limit |
| Nickel | 1.4 µg/L | ≤ 20 µg/L | within limit |
| Arsenic | 1.1 µg/L | ≤ 10 µg/L | within limit |
| Chromium | <0,5 µg/L | ≤ 50 µg/L | within limit |
| Fluoride | 0.435 mg/L | ≤ 1.5 mg/L | within limit |
| Escherichia coli | 0 n/(100mL) | ≤ 0 mL) | within limit |
| Enterococci | 0 n/(100mL) | ≤ 0 mL) | within limit |
| Coliform bacteria | 0 n/(100mL) | ≤ 0 mL) | within limit |
| pH | 7.2 unité pH | 6.5–9 unité pH | within limit |
| Water hardness | 50.4 °f | no limit | informational |
| Electrical conductivity | 910 µS/cm | 200–1,100 µS/cm | within limit |
| Chloride | 37.1 mg/L | ≤ 250 mg/L | within limit |
| Sulphate | 124 mg/L | ≤ 250 mg/L | within limit |
| Sodium | 13.7 mg/L | ≤ 200 mg/L | within limit |
| Iron | 21.2 µg/L | ≤ 200 µg/L | within limit |
| Turbidity | 0.38 NFU | ≤ 2 NFU | within limit |
Frequently asked questions
Is tap water in Lagny-le-Sec safe to drink?
Yes. The latest official test (22 June 2026) checked the tap water in Lagny-le-Sec and it passed every requirement.
How high are PFAS levels in Lagny-le-Sec's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at 0.002 µg/L. The EU limit is 0.1 µg/L, so this water is at 2 % of the limit. (below the EU limit)
How hard is the water in Lagny-le-Sec?
The water hardness in Lagny-le-Sec is 50.4 °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=60341
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 28 August 2026
- Supply networks
- LE PLESSIS BELLEVILLE
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.