Drinking water quality in Bruyères-sur-Oise
PFAS in drinking water
The total of 20 PFAS ("forever chemicals") was last measured at 0.041 µg/L. The EU limit is 0.1 µg/L, so this water is at 41 % of the limit. (28 November 2025)
The four most harmful PFAS add up to 0.027 µg/L. That is 6.8 times the health limit of 0.004 µg/L that Sweden made law in 2026. Germany will set a similar limit in 2028.
One of these four, PFOA, is classified as causing cancer in humans by the WHO's cancer research agency (IARC).
Substances too small to measure count as 0, so the real total may be higher.
20 PFAS (see each substance)
| Acide perfluoro-octanoïque (PFOA) | 0.02 µg/L |
| Acide perfluoropentanoïque (PFPEA) | 0.005 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | 0.004 µg/L |
| Acide perfluorobutanoïque (PFBA) | 0.003 µg/L |
| Perfluorohexane sulfonate (PFHXS) | 0.003 µg/L |
| Acide perfluorohexanoïque (PFHXA) | 0.003 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | 0.002 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | 0.001 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,005 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,002 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,002 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,001 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,001 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,001 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,001 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,001 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,001 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,002 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,001 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,001 µg/L |
Water report for Bruyères-sur-Oise
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Official assessment
The latest official test failed at least one quality requirement.
„Eau d’alimentation non-conforme aux limites de qualité pour les paramè tres chloridazone desphényl et chloridazone methyldesphényl. Toutefois les seuils sanitaires respectivement de 11µg/L et de 110 µg/L n’ayant pas été dépassés, en l'état actuel des connaissances scientifiques, a ucune restriction d'usage n'est nécessaire, l’eau peut donc être conso mmée. Un suivi renforcé est mis en place pour surveiller l’évolution d e la situation. La personne responsable de la production et de la dist ribution de l’eau doit engager un programme d’actions visant à réduire les teneurs des paramètres concernés. Les autres paramètres recherché s 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 | 37.8 mg/L | ≤ 50 mg/L | within limit |
Show all 19 official measurements
| Parameter | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 37.8 mg/L | ≤ 50 mg/L | within limit |
| Nitrite | <0,01 mg/L | ≤ 0.5 mg/L | within limit |
| Lead | 3 µg/L | ≤ 10 µg/L | within limit |
| Copper | 0.071 mg(Cu)/L | ≤ 2 mg(Cu)/L | within limit |
| Nickel | <5 µg/L | ≤ 20 µg/L | within limit |
| Arsenic | <2 µg/L | ≤ 10 µg/L | within limit |
| Chromium | <5,00 µg/L | ≤ 50 µg/L | within limit |
| Fluoride | 0.16 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 | 7.3 unité pH | 6.5–9 unité pH | within limit |
| Water hardness | 34 °f | no limit | informational |
| Electrical conductivity | 676 µS/cm | 200–1,100 µS/cm | within limit |
| Chloride | 21.6 mg/L | ≤ 250 mg/L | within limit |
| Sulphate | 26.4 mg/L | ≤ 250 mg/L | within limit |
| Sodium | 9.7 mg/L | ≤ 200 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 Bruyères-sur-Oise safe to drink?
The latest official test failed at least one quality requirement.
How high are PFAS levels in Bruyères-sur-Oise's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at 0.041 µg/L. The EU limit is 0.1 µg/L, so this water is at 41 % of the limit. (below the EU limit)
Does the water in Bruyères-sur-Oise also meet the strictest limits in Europe?
No. The four most harmful PFAS add up to 0.027 µg/L. That is 6.8 times the health limit of 0.004 µg/L that Sweden made law in 2026. The water still passes the current EU limit (0.1 µg/L for the total of 20 PFAS).
How hard is the water in Bruyères-sur-Oise?
The water hardness in Bruyères-sur-Oise is 34 °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=95116
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 28 August 2026
- Supply networks
- BRUYERES SUR OISE
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.