PFAS in Edern's tap water: under 6 ng/L, none of the four main PFAS detected
Last PFAS check: · Source: Hub'eau
PFAS in drinking water
None of the 4 most harmful PFAS detected
The lab sees nothing below 6 ng/L, 12 times our benchmark of 0.5 ng/L. Water above our benchmark would pass this check unnoticed.
0.5 ng/L is our benchmark, not an official limit. Same EFSA method as Sweden, Denmark and the Netherlands, but stricter. It's a yearly average, compared here with the latest check.
Sample taken in Briec, on the same distribution network as Edern (QUEMENEVEN-BRIEC-EDERN (AULNE)). The health authority samples one tap per network; a network carries the same treated water everywhere.
More about this result
The US also limits PFOA and PFOS to 4 ng/L each, per substance.
The lab detects each of the four substances from 1 to 2 ng/L upward. None reached that limit, so their total is below 6 ng/L rather than zero.
checked on 6 May 2026
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide perfluoropentanoïque (PFPEA) | 0.0041 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | <0,001 µg/L |
| Perfluorohexane sulfonate (PFHXS) | <0,002 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,002 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,001 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,002 µg/L |
| Acide perfluoro-octanoïque (PFOA) | <0,002 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,001 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,005 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,002 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,001 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,005 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,001 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,002 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,001 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,001 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,002 µg/L |
| Acide perfluorohexanoïque (PFHXA) | <0,005 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,001 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | <0,005 µg/L |
None found. The lab sees nothing below 6 ng/L, so our 0.5 ng/L benchmark cannot be checked.
Water report for Edern
Get new PFAS results for Edern, with a short explanation. At most one update a week, only when there's something new.
- EU legal limit
- 4.1 ng/L sum of 20 PFAS, below the 100 ng/L limit
- Last PFAS test
- 6 May 2026
- Water supplier
- QUIMPER BRETAGNE OCCIDENTALE EDCH
In Edern, none of the 4 most closely watched PFAS (PFAS-4) was detected at the latest PFAS check on 6 May 2026. The total is below 6 ng/L, the sum of the detection limits and 12 times our 0.5 ng/L benchmark. Sum of 20 PFAS: 4.1 ng/L (0.0041 µg/L), below the EU legal limit (100 ng/L). Sampled in Briec, on the same network. 5 checks since 14 April 2025, PFAS-4 always below the detection limit. Source: Hub'eau, Qualité de l'eau potable (Ministère de la Santé / OFB / BRGM).
Details and sources
PFAS over time in Edern
6 PFAS checks since 5 March 2025, from the published measurements. Samples from 2 communes on the same network: it's the same water, so each one applies to Edern. Samples come from 3 distribution networks. The trend refers to the network “QUEMENEVEN-BRIEC-EDERN (AULNE)”.
“Calculated”: PFAS-4 worked out from the four substances in the same sample. The chart, averages and trends use lab-published sums only.
| Date | PFAS-4 | Sum of 20 PFAS | Sampled at | Network |
|---|---|---|---|---|
| < detection limit | 4.1 ng/L | Briec | QUEMENEVEN-BRIEC-EDERN (AULNE), QUEMENEVEN-BRIEC-EDERN (AULNE) +2 | |
| < detection limit | 5.6 ng/L | Cast | QUEMENEVEN-BRIEC-EDERN (AULNE), QUEMENEVEN-BRIEC-EDERN (AULNE) | |
| < detection limit | < detection limit | Briec | EDERN - BOURG (NENEZ), EDERN - BOURG (NENEZ) | |
| < detection limit | < detection limit | Cast | QUEMENEVEN-BRIEC-EDERN (AULNE), QUEMENEVEN-BRIEC-EDERN (AULNE) | |
| < detection limit | < detection limit | Cast | QUEMENEVEN-BRIEC-EDERN (AULNE), QUEMENEVEN-BRIEC-EDERN (AULNE) | |
| < 6 ng/L · calculated | < detection limit | Briec | BRIEC - CENTRE (GOULITQUER), BRIEC - CENTRE (GOULITQUER) |
Calculated values: “<” is an upper bound from published thresholds, “≥” a lower bound, “–” means no published sum or complete measurement. How to read a PFAS result
What the latest check found
At the latest check, the water was within every limit tested.
See all 17 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 12 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | <0,01 mg/L | ≤ 0.5 mg/L | within the limit |
| Cadmium | <0,1 µg/L | ≤ 5 µg/L | within the limit |
| Chromium | <1 µg/L | ≤ 50 µg/L | within the limit |
| Uranium | 1.5 µg/L | ≤ 30 µg/L | within the limit |
| Fluoride | 0.26 mg/L | ≤ 1.5 mg/L | within the limit |
| Escherichia coli | 0 n/(100mL) | ≤ 0 mL) | within the limit |
| Enterococci | 0 n/(100mL) | ≤ 0 mL) | within the limit |
| Coliform bacteria | 0 n/(100mL) | ≤ 0 mL) | within the limit |
| pH | 8.2 unité pH | 6.5–9 unité pH | within the limit |
| Water hardness | 10 °f | no limit | for reference |
| Electrical conductivity | 272 µS/cm | 200–1,100 µS/cm | within the limit |
| Chloride | 14.2 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 7.9 mg/L | ≤ 250 mg/L | within the limit |
| Sodium | 11.5 mg/L | ≤ 200 mg/L | within the limit |
| Iron | <5 µg/L | ≤ 200 µg/L | within the limit |
| Turbidity | 0.36 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in Edern safe to drink?
Yes. At the check on 22 June 2026, the tap water in Edern was within every limit tested. “Eau d'alimentation conforme aux exigences de qualité en vigueur pour l'ensemble des paramètres mesurés.”
How high are PFAS levels in Edern's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at 4.1 ng/L. The EU limit is 100 ng/L, so this water is at 4 % of the limit. (below the EU limit)
Does the water in Edern also meet the strictest limits in Europe?
The check cannot say. None of the four compounds was quantified, but the laboratory's detection limits add up to 6 ng/L, above Sweden's legal limit of 4 ng/L in force since 2026, so a value between the two would go unnoticed.
Are PFAS levels rising in Edern's tap water?
No. Since 5 March 2025, 5 checks have been published and the PFAS-4 sum stayed below the laboratory's detection limit every time. These history statistics use laboratory-published sums only.
How hard is the water in Edern?
The water hardness in Edern is 10 °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 12 September 2026.
Same water network
Same distribution network as Edern, so in principle the same water.
Nearby communes
The closest to Edern on this site.
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=29048
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 12 September 2026
- Supply networks
- QUEMENEVEN-BRIEC-EDERN (AULNE), EDERN - BOURG (NENEZ), BRIEC - CENTRE (GOULITQUER)
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.