PFAS in Redon's tap water: 1.1 ng/L, 2.2x our 0.5 ng/L benchmark
Last PFAS check: · Source: Hub'eau
PFAS in drinking water
2.2× above our health benchmark
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.
More about this result
The US also limits PFOA and PFOS to 4 ng/L each, per substance.
Substances below the detection limit count as 0, so the real total may be higher.
One of these four, PFOA, is classified as causing cancer in humans by the WHO's cancer research agency (IARC).
More PFAS than in 84% of the cities we track
checked on 25 February 2026
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide perfluorohexanoïque (PFHXA) | 0.0012 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | 0.0011 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,00040 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,0010 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,0010 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,00040 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,00040 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,0010 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,00040 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,00040 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,00040 µg/L |
| Acide perfluoropentanoïque (PFPEA) | <0,0050 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,00040 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,0010 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,0050 µg/L |
| Perfluorohexane sulfonate (PFHXS) | <0,00040 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | <0,0010 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,0010 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,00040 µg/L |
| Acide perfluoro-octanoïque (PFOA) | <0,0010 µg/L |
Above our health benchmark. Here are some filter options.
- EU legal limit
- 2.3 ng/L sum of 20 PFAS, below the 100 ng/L limit
- Last PFAS test
- 25 February 2026
- Water supplier
- SAUR 35
In Redon, the 4 most closely watched PFAS (PFAS-4) add up to 1.1 ng/L (0.0011 µg/L) at the latest PFAS check on 25 February 2026. That's 2.2 times our 0.5 ng/L health benchmark, but below Sweden's legal limit of 4 ng/L. Sum of 20 PFAS: 2.3 ng/L (0.0023 µg/L), below the EU legal limit (100 ng/L). 5 checks since 14 May 2025: PFAS-4 from 1.1 ng/L to 2.27 ng/L, averaging 1.69 ng/L over 12 months. Falling on the main network. Source: Hub'eau, Qualité de l'eau potable (Ministère de la Santé / OFB / BRGM).
Details and sources
PFAS over time in Redon
5 PFAS checks since 14 May 2025, values as published. Samples come from 2 distribution networks. The trend refers to the network “REDON_PARADET_REDON”.
| Date | PFAS-4 | Sum of 20 PFAS | Network |
|---|---|---|---|
| 1.1 ng/L | 2.3 ng/L | REDON_PARADET_REDON | |
| 1.7 ng/L | 3.89 ng/L | REDON_PARADET_REDON | |
| 1.7 ng/L | 3.89 ng/L | 044004436 | |
| 2.27 ng/L | 4.06 ng/L | REDON_PARADET_REDON | |
| 2.27 ng/L | 4.06 ng/L | 044004436 |
“<” means not detected, the figure being the detection limit. “–” means not published. Labs have only reported the PFAS-4 sum (SANDRE code 9268) since autumn 2025. How to read a PFAS result
What the latest check found
The authorities have not published an overall verdict for this water.
See all 21 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 5.6 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | <0,02 mg/L | ≤ 0.5 mg/L | within the limit |
| Lead | <1,0 µg/L | ≤ 10 µg/L | within the limit |
| Copper | 0.0049 mg(Cu)/L | ≤ 2 mg(Cu)/L | within the limit |
| Nickel | 1.3 µg/L | ≤ 20 µg/L | within the limit |
| Arsenic | <0,20 µg/L | ≤ 10 µg/L | within the limit |
| Cadmium | <0,025 µg/L | ≤ 5 µg/L | within the limit |
| Chromium | <1,0 µg/L | ≤ 50 µg/L | within the limit |
| Uranium | <0,50 µg/L | ≤ 30 µg/L | within the limit |
| Fluoride | 0.081 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 | 15.1 °f | no limit | for reference |
| Electrical conductivity | 468 µS/cm | 200–1,100 µS/cm | within the limit |
| Chloride | 82.9 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 16.2 mg/L | ≤ 250 mg/L | within the limit |
| Sodium | 22.4 mg/L | ≤ 200 mg/L | within the limit |
| Iron | 21 µg/L | ≤ 200 µg/L | within the limit |
| Turbidity | <0,20 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in Redon safe to drink?
All the values shown here (7 July 2026) are within the legal limits, but the authorities have not published an overall verdict for this water. “Eau d'alimentation conforme aux limites réglementaires en vigueur, mais ne respectant pas la référence de qualité fixée pour le paramètre température en ce point d'échantillonage. De plus, il convient de signaler la présence de traces de pesticides en sortie de station.”
How high are PFAS levels in Redon's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at 2.3 ng/L. The EU limit is 100 ng/L, so this water is at 2 % of the limit. (below the EU limit)
Does the water in Redon also meet the strictest limits in Europe?
Yes. Even against Europe's strictest legal limit, Sweden's 4 ng/L in force since 2026, the measured value of 1.1 ng/L stays below.
Are PFAS levels rising in Redon's tap water?
No, they are falling. On the main network, the PFAS-4 sum went from 2.27 ng/L (14 May 2025) to 1.1 ng/L (25 February 2026) across 3 quantified checks.
How hard is the water in Redon?
The water hardness in Redon is 15.1 °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 21 September 2026.
Nearby communes
The closest to Redon 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=35236
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 21 September 2026
- Supply networks
- REDON_PARADET_REDON
Water report for Redon
Get new PFAS results for Redon, with a short explanation. At most one update a week, only when there's something new.
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.