Drinking water quality in Saint-Pathus
PFAS in drinking water
The total of 20 PFAS ("forever chemicals") was last measured at 0.008 µg/L. The EU limit is 0.1 µg/L, so this water is at 8 % of the limit. (19 March 2026)
This source does not list each PFAS substance separately, so we cannot compare this water with the health limit.
1 PFAS (see each substance)
| Acide perfluorododécanoique (PFDoDA) | <0,001 µg/L |
Water report for Saint-Pathus
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Official assessment
The authorities have not published an overall verdict for this water.
„Eau d’alimentation présentant un dépassement de la valeur indicative pour le paramètre chlorothalonil R471811 (métabolite non pertinent) n’entrainant pas de mesure de restriction d’usage. Un suivi renforcé est mis en place pour surveiller l’évolution de la situation. La personne responsable de la distribution de l’eau doit engager un programme d’actions visant à réduire les teneurs du paramètre concerné. Les autres paramètres recherchés dans le cadre du contrôle sanitaire sont conformes aux exigences du code de la santé publique.“
Values to watch
These values are at least halfway to their legal limit, or over it.
| Parameter | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 27.4 mg/L | ≤ 50 mg/L | within limit |
Show all 15 official measurements
| Parameter | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 27.4 mg/L | ≤ 50 mg/L | within limit |
| Nitrite | <0,01 mg/L | ≤ 0.5 mg/L | within limit |
| Chromium | <5 µg/L | ≤ 50 µg/L | within limit |
| Uranium | <10 µg/L | ≤ 30 µg/L | within limit |
| Fluoride | 0.35 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 | 7.4 unité pH | 6.5–9 unité pH | within limit |
| Water hardness | 46.4 °f | no limit | informational |
| Electrical conductivity | 869 µS/cm | 200–1,100 µS/cm | within limit |
| Chloride | 33.7 mg/L | ≤ 250 mg/L | within limit |
| Sulphate | 84 mg/L | ≤ 250 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 Saint-Pathus safe to drink?
All the values shown here (22 May 2026) are within the legal limits, but the authorities have not published an overall verdict for this water.
How high are PFAS levels in Saint-Pathus's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at 0.008 µg/L. The EU limit is 0.1 µg/L, so this water is at 8 % of the limit. (below the EU limit)
How hard is the water in Saint-Pathus?
The water hardness in Saint-Pathus is 46.4 °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=77430
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 28 August 2026
- Supply networks
- SAINT PATHUS - SMAEP GOELE
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.