PFAS in Dissay's tap water: 11.9 ng/L, 23.8x our 0.5 ng/L benchmark
Last PFAS check: · Source: Hub'eau
PFAS in drinking water
23.8× 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 97% of the cities we track
checked on 17 July 2026
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide perfluorobutanoïque (PFBA) | 0.012 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | 0.011 µg/L |
| Perfluorohexane sulfonate (PFHXS) | 0.0063 µg/L |
| Acide perfluoro-octanoïque (PFOA) | 0.0056 µg/L |
| Acide perfluorohexanoïque (PFHXA) | 0.004 µg/L |
| Acide perfluoropentanoïque (PFPEA) | 0.0033 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | 0.0017 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | 0.0014 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,0050 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,010 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,0050 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,0010 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,0050 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,0010 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,0050 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,020 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | <0,0010 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,0050 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,010 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,0050 µg/L |
Above our health benchmark. Here are some filter options.
- EU legal limit
- 45.3 ng/L sum of 20 PFAS, below the 100 ng/L limit
- Last PFAS test
- 17 July 2026
- Water supplier
- EAUX DE VIENNE - SIVEER
In Dissay, the 4 most closely watched PFAS (PFAS-4) add up to 11.9 ng/L (0.0119 µg/L) at the latest PFAS check on 17 July 2026. That's 23.8 times our 0.5 ng/L health benchmark, and above Sweden's legal limit of 4 ng/L. Sum of 20 PFAS: 45.3 ng/L (0.0453 µg/L), below the EU legal limit (100 ng/L). 10 checks since 11 June 2025: PFAS-4 up to 20.1 ng/L, sometimes below the detection limit, averaging 16.93 ng/L over 12 months. No clear trend. Source: Hub'eau, Qualité de l'eau potable (Ministère de la Santé / OFB / BRGM).
Details and sources
PFAS over time in Dissay
10 PFAS checks since 11 June 2025, values as published. Samples from 2 communes on the same network: it's the same water, so each one applies to Dissay. Samples come from 2 distribution networks. The trend refers to the network “DISSAY AILLE”.
| Date | PFAS-4 | Sum of 20 PFAS | Sampled at | Network |
|---|---|---|---|---|
| 11.9 ng/L | 45.3 ng/L | Dissay | DISSAY AILLE | |
| 15.2 ng/L | 50.7 ng/L | Dissay | DISSAY AILLE | |
| 16.2 ng/L | 50.9 ng/L | Dissay | DISSAY AILLE | |
| 16.7 ng/L | 55.6 ng/L | Dissay | DISSAY AILLE | |
| < detection limit | < detection limit | Vouneuil-sur-Vienne | DISSAY MOUSSAIS | |
| 19.5 ng/L | 68.1 ng/L | Dissay | DISSAY AILLE | |
| 20.1 ng/L | 63.2 ng/L | Dissay | DISSAY AILLE | |
| 18.9 ng/L | 63.5 ng/L | Dissay | DISSAY AILLE | |
| < 4 ng/L | < 71 ng/L | Vouneuil-sur-Vienne | DISSAY MOUSSAIS | |
| 15.6 ng/L | 55.2 ng/L | Dissay | DISSAY AILLE |
“<” 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
At the latest check, the water was within every limit tested.
See all 21 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 24 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | <0,01 mg/L | ≤ 0.5 mg/L | within the limit |
| Lead | 0.6 µg/L | ≤ 10 µg/L | within the limit |
| Copper | <0,01 mg(Cu)/L | ≤ 2 mg(Cu)/L | within the limit |
| Nickel | 1 µg/L | ≤ 20 µg/L | within the limit |
| Arsenic | 0.5 µg/L | ≤ 10 µg/L | within the limit |
| Cadmium | 0.085 µg/L | ≤ 5 µg/L | within the limit |
| Chromium | <1 µg/L | ≤ 50 µg/L | within the limit |
| Uranium | 2.7 µg/L | ≤ 30 µg/L | within the limit |
| Fluoride | 0.21 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 | 7.2 unité pH | 6.5–9 unité pH | within the limit |
| Water hardness | 27 °f | no limit | for reference |
| Electrical conductivity | 742 µS/cm | 200–1,100 µS/cm | within the limit |
| Chloride | 31 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 34 mg/L | ≤ 250 mg/L | within the limit |
| Sodium | 18 mg/L | ≤ 200 mg/L | within the limit |
| Iron | <10 µg/L | ≤ 200 µg/L | within the limit |
| Turbidity | <0,3 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in Dissay safe to drink?
Yes. At the check on 17 July 2026, the tap water in Dissay was within every limit tested. “Eau d'alimentation conforme aux limites de qualité et non conforme aux références de qualité. A noter une température dépassant la référence guide de 25°C. ”
How high are PFAS levels in Dissay's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at 45.3 ng/L. The EU limit is 100 ng/L, so this water is at 45 % of the limit. (below the EU limit)
Does the water in Dissay also meet the strictest limits in Europe?
No. The four most harmful PFAS add up to 11.9 ng/L. That is 3 times Sweden's legal limit of 4 ng/L, in force since 2026. Germany will set a similar one in 2028. The water still passes the current EU legal limit (100 ng/L for the total of 20 PFAS).
Are PFAS levels rising in Dissay's tap water?
No clear trend. Since 11 June 2025, 10 checks have been published; on the main network the PFAS-4 sum ranged between 11.9 ng/L and 20.1 ng/L (8 quantified values), at times below the detection limit. pfasnearme only reports a trend from a change of at least 25 % and 1 ng/L.
How hard is the water in Dissay?
The water hardness in Dissay is 27 °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 Dissay 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=86095
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 21 September 2026
- Supply networks
- DISSAY AILLE, DISSAY MOUSSAIS
Water report for Dissay
Get new PFAS results for Dissay, 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.