Drinking water quality in Bruz
PFAS in drinking water
The total of 20 PFAS ("forever chemicals") was last measured at 0.0191 µg/L. The EU limit is 0.1 µg/L, so this water is at 19 % of the limit. (19 November 2025)
The four most harmful PFAS add up to 0.0132 µg/L. That is 3.3 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)
| Perfluorohexane sulfonate (PFHXS) | 0.0091 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | 0.0041 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | 0.0021 µg/L |
| Acide perfluorohexanoïque (PFHXA) | 0.002 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | 0.0018 µg/L |
| Acide perfluoropentanoïque (PFPEA) | <0,0050 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,0010 µg/L |
| Acide perfluoro-octanoïque (PFOA) | <0,0010 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,00040 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | <0,0010 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,00040 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,00040 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,00040 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,0010 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,0010 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,0050 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,0010 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,00040 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,00040 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,0010 µg/L |
Water report for Bruz
Get the free water report for Bruz, 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. Il convient cependant de noter l'absence de chlore résiduel sur ce secteur de distribution. D'une façon générale, la présence d'un résiduel de chlore est nécessaire pour se prémunir de la prolifération bactérienne dans les réseaux (objectif souhaitable : 0,1 mg/L de chlore libre). L'exploitant a été informé de cette situation dès connaissance de celle-ci par mon service, pour vérifications et actions correctives d'usage.“
Show all 19 official measurements
| Parameter | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 15.8 mg/L | ≤ 50 mg/L | within limit |
| Nitrite | <0,02 mg/L | ≤ 0.5 mg/L | within limit |
| Lead | <1,0 µg/L | ≤ 10 µg/L | within limit |
| Copper | 0.0046 mg(Cu)/L | ≤ 2 mg(Cu)/L | within limit |
| Nickel | 1.6 µg/L | ≤ 20 µg/L | within limit |
| Arsenic | 0.2 µg/L | ≤ 10 µg/L | within limit |
| Chromium | <1,0 µg/L | ≤ 50 µg/L | within limit |
| Fluoride | 0.1 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 | 8.2 unité pH | 6.5–9 unité pH | within limit |
| Water hardness | 16.4 °f | no limit | informational |
| Electrical conductivity | 447 µS/cm | 200–1,100 µS/cm | within limit |
| Chloride | 66.6 mg/L | ≤ 250 mg/L | within limit |
| Sulphate | 17.6 mg/L | ≤ 250 mg/L | within limit |
| Sodium | 60.6 mg/L | ≤ 200 mg/L | within limit |
| Iron | <20 µg/L | ≤ 200 µg/L | within limit |
| Turbidity | <0,20 NFU | ≤ 2 NFU | within limit |
Frequently asked questions
Is tap water in Bruz safe to drink?
Yes. The latest official test (1 June 2026) checked the tap water in Bruz and it passed every requirement.
How high are PFAS levels in Bruz's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at 0.0191 µg/L. The EU limit is 0.1 µg/L, so this water is at 19 % of the limit. (below the EU limit)
Does the water in Bruz also meet the strictest limits in Europe?
No. The four most harmful PFAS add up to 0.0132 µg/L. That is 3.3 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 Bruz?
The water hardness in Bruz is 16.4 °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=35047
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 28 August 2026
- Supply networks
- CEBR_CHAMP FLEURY_BRUZ, CEBR_VILLEJEAN/ROPHEMEL/MEZIERES/AVA_RENNES, CEBR_ROPHEMEL/VILLEJEAN_RENNES
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.