Drinking water quality in La Gouesnière
PFAS in drinking water
No PFAS results have been published for La Gouesnière yet. Testing has been required across the EU since January 2026. We will show the values here as soon as they come out.
"Not published" does not mean "not present". Without test results, no one can say how much PFAS is in this water.
Water report for La Gouesnière
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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). A noter d'ailleurs, en ce point d'échantillonnage, la présence d'une flore revivifiable a normalement élevée.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 17 official measurements
| Parameter | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 4.5 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 | 0.008 mg(Cu)/L | ≤ 2 mg(Cu)/L | within limit |
| Nickel | 1.8 µg/L | ≤ 20 µg/L | within limit |
| Cadmium | <0,025 µg/L | ≤ 5 µg/L | within limit |
| Chromium | <1,0 µg/L | ≤ 50 µg/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 | 8.1 unité pH | 6.5–9 unité pH | within limit |
| Water hardness | 17.8 °f | no limit | informational |
| Electrical conductivity | 490 µS/cm | 200–1,100 µS/cm | within limit |
| Chloride | 84.7 mg/L | ≤ 250 mg/L | within limit |
| Sulphate | 19 mg/L | ≤ 250 mg/L | within limit |
| Iron | 152 µg/L | ≤ 200 µg/L | within limit |
| Turbidity | 0.6 NFU | ≤ 2 NFU | within limit |
Frequently asked questions
Is tap water in La Gouesnière safe to drink?
Yes. The latest official test (18 June 2026) checked the tap water in La Gouesnière and it passed every requirement.
How high are PFAS levels in La Gouesnière's drinking water?
No PFAS results have been published for La Gouesnière yet. Testing has been required across the EU since January 2026. We will show the values here as soon as they come out.
How hard is the water in La Gouesnière?
The water hardness in La Gouesnière is 17.8 °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=35122
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 28 August 2026
- Supply networks
- BEAUFORT_BEAUFORT_DOL DE BRETAGNE
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.