Drinking water quality in Bannalec
PFAS in drinking water
The total of 20 PFAS ("forever chemicals") was last measured at 0.0051 µg/L. The EU limit is 0.1 µg/L, so this water is at 5 % of the limit. (25 June 2025)
This source does not list each PFAS substance separately, so we cannot compare this water with the health limit.
Water report for Bannalec
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Official assessment
The latest official test passed all quality requirements.
„Eau d’alimentation conforme aux limites de qualité, mais ne satisfaisant pas totalement aux références de qualité, en raison d’un indice relatif à l’équilibre calco‑carbonique supérieur à 2. Cet indice traduit le caractère peu minéralisé de l’eau, susceptible d’interagir avec les matériaux constitutifs des canalisations, sans incidence directe sur la santé du consommateur. Une optimisation du traitement de neutralisation-minéralisation à l'unité de production est nécessaire.“
Show all 17 official measurements
| Parameter | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 22 mg/L | ≤ 50 mg/L | within limit |
| Nitrite | <0,01 mg/L | ≤ 0.5 mg/L | within limit |
| Lead | <0,4 µg/L | ≤ 10 µg/L | within limit |
| Chromium | <1 µg/L | ≤ 50 µg/L | within limit |
| Uranium | 0.21 µg/L | ≤ 30 µg/L | within limit |
| Fluoride | 0.08 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 | 7.5 unité pH | 6.5–9 unité pH | within limit |
| Water hardness | 8.7 °f | no limit | informational |
| Electrical conductivity | 283 µS/cm | 200–1,100 µS/cm | within limit |
| Chloride | 24.1 mg/L | ≤ 250 mg/L | within limit |
| Sulphate | 12 mg/L | ≤ 250 mg/L | within limit |
| Sodium | 15.8 mg/L | ≤ 200 mg/L | within limit |
| Iron | 2.8 µg/L | ≤ 200 µg/L | within limit |
| Turbidity | 0.18 NFU | ≤ 2 NFU | within limit |
Frequently asked questions
Is tap water in Bannalec safe to drink?
Yes. The latest official test (24 June 2026) checked the tap water in Bannalec and it passed every requirement.
How high are PFAS levels in Bannalec's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at 0.0051 µg/L. The EU limit is 0.1 µg/L, so this water is at 5 % of the limit. (below the EU limit)
How hard is the water in Bannalec?
The water hardness in Bannalec is 8.7 °f (soft). 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=29004
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 28 August 2026
- Supply networks
- BANNALEC (GUERNIC), STER-GOZ
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.