Drinking water quality in Saint-Aubin-sur-Mer
PFAS in drinking water
The total of 20 PFAS ("forever chemicals") was last measured at <SEUIL µg/L. The EU limit is 0.1 µg/L, so this water is at 0 % of the limit. (2 June 2026)
The four most harmful PFAS add up to 0 µg/L, below the health limit of 0.004 µg/L used in Sweden since 2026.
Substances too small to measure count as 0, so the real total may be higher.
20 PFAS (see each substance)
| Acide perfluoro tridecanoique (PFTrDA) | <0,0020 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | <0,001 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,0050 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,0010 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,0010 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,001 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,0020 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,0010 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,001 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | <0,001 µg/L |
| Perfluorohexane sulfonate (PFHXS) | <0,0010 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,0010 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,0010 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,001 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,0010 µg/L |
| Acide perfluorohexanoïque (PFHXA) | <0,0010 µg/L |
| Acide perfluoropentanoïque (PFPEA) | <0,001 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,001 µg/L |
| Acide perfluoro-octanoïque (PFOA) | <0,0010 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,0010 µg/L |
Water report for Saint-Aubin-sur-Mer
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Official assessment
The latest official test failed at least one quality requirement.
„Eau d'alimentation non conforme aux exigences de qualité fixées pour les paramètres chlorothalonil R417888, chloridazone desphényl, chloridazone méthyl-desphényl, métazachlore et pour le total des pesti cides analysés. Les concentrations mesurées dans le cadre du contrôle renforcé sont inférieures aux valeurs sanitaires de référence fixées à 11 µg/L pour le chloridazone desphényl et 110 µg/L pour le chloridazo ne méthyl desphényl. La concentration en chlorothalonil R417888 est in férieure à la valeur sanitaire transitoire de 3µg/L définie par précau tion par le ministère de la santé. Enfin, la valeur indicative définie pour le chlorothalonil R471811 n’est pas satisfaite. L'eau peut être consommée sans restriction d'usage.“
Values to watch
These values are at least halfway to their legal limit, or over it.
| Parameter | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 35.4 mg/L | ≤ 50 mg/L | within limit |
Show all 20 official measurements
| Parameter | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 35.4 mg/L | ≤ 50 mg/L | within limit |
| Nitrite | <0,010 mg/L | ≤ 0.5 mg/L | within limit |
| Lead | 0.76 µg/L | ≤ 10 µg/L | within limit |
| Copper | 0.0368 mg(Cu)/L | ≤ 2 mg(Cu)/L | within limit |
| Nickel | <0,50 µg/L | ≤ 20 µg/L | within limit |
| Arsenic | <0,25 µg/L | ≤ 10 µg/L | within limit |
| Cadmium | <0,025 µg/L | ≤ 5 µg/L | within limit |
| Chromium | 0.6 µg/L | ≤ 50 µg/L | within limit |
| Fluoride | 0.16 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 | 7.03 unité pH | 6.5–9.5 pH | within limit |
| Water hardness | 36.2 °f | no limit | informational |
| Electrical conductivity | 837 µS/cm | 200–1,100 µS/cm | within limit |
| Chloride | 59.1 mg/L | ≤ 250 mg/L | within limit |
| Sulphate | 29 mg/L | ≤ 250 mg/L | within limit |
| Sodium | 21.4 mg/L | ≤ 200 mg/L | within limit |
| Iron | <1,0 µg/L | ≤ 200 µg/L | within limit |
| Turbidity | <0,10 NFU | ≤ 2 NFU | within limit |
Frequently asked questions
Is tap water in Saint-Aubin-sur-Mer safe to drink?
The latest official test failed at least one quality requirement.
How high are PFAS levels in Saint-Aubin-sur-Mer's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at <SEUIL µg/L. The EU limit is 0.1 µg/L, so this water is at 0 % of the limit. (below the EU limit)
Does the water in Saint-Aubin-sur-Mer also meet the strictest limits in Europe?
Yes. Even against Europe's strictest limit, the health limit of 0.004 µg/L used in Sweden since 2026, the measured value of 0 µg/L stays below.
How hard is the water in Saint-Aubin-sur-Mer?
The water hardness in Saint-Aubin-sur-Mer is 36.2 °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=14562
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 28 August 2026
- Supply networks
- BERNIERES-ST AUBIN
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.