PFAS in Desingy's tap water: 25 ng/L, 50x our 0.5 ng/L benchmark
Last PFAS check: · Source: Hub'eau
PFAS in drinking water
50× 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 99% of the cities we track
checked on 31 March 2026
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide sulfonique de perfluorooctane (PFOS) | 0.018 µg/L |
| Acide perfluoro-octanoïque (PFOA) | 0.007 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,001 µg/L |
| Acide perfluoropentanoïque (PFPEA) | <0,001 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,001 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,002 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,002 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,002 µg/L |
| Acide perfluorohexanoïque (PFHXA) | <0,002 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,001 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,001 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,001 µg/L |
| Perfluorohexane sulfonate (PFHXS) | <0,001 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,001 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,001 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | <0,001 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,005 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,001 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,001 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,002 µg/L |
Above our health benchmark. Here are some filter options.
- EU legal limit
- 25 ng/L sum of 20 PFAS, below the 100 ng/L limit
- Last PFAS test
- 31 March 2026
- Water supplier
- MAIRIE DE DESINGY
In Desingy, the 4 most closely watched PFAS (PFAS-4) add up to 25 ng/L (0.025 µg/L) at the latest PFAS check on 31 March 2026. That's 50 times our 0.5 ng/L health benchmark, and above Sweden's legal limit of 4 ng/L. Sum of 20 PFAS: 25 ng/L (0.025 µg/L), below the EU legal limit (100 ng/L). 5 checks since 14 October 2025: PFAS-4 from 25 ng/L to 48 ng/L, averaging 34.33 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 Desingy
5 PFAS checks since 14 October 2025, values as published. Samples come from 2 distribution networks. The trend refers to the network “PRINCIPAL DE DESINGY”.
| Date | PFAS-4 | Sum of 20 PFAS | Network |
|---|---|---|---|
| 25 ng/L | 25 ng/L | VENCIERES | |
| 26 ng/L | 26 ng/L | PRINCIPAL DE DESINGY | |
| 48 ng/L | 50 ng/L | PRINCIPAL DE DESINGY | |
| 29 ng/L | 30 ng/L | PRINCIPAL DE DESINGY | |
| 34 ng/L | 35 ng/L | VENCIERES |
“<” 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 19 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 1.3 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | <0,03 mg/L | ≤ 0.5 mg/L | within the limit |
| Lead | <0,20 µg/L | ≤ 10 µg/L | within the limit |
| Arsenic | <0,50 µg/L | ≤ 10 µg/L | within the limit |
| Cadmium | <0,10 µg/L | ≤ 5 µg/L | within the limit |
| Chromium | <0,50 µg/L | ≤ 50 µg/L | within the limit |
| Uranium | 0.42 µg/L | ≤ 30 µg/L | within the limit |
| Fluoride | 0.06 mg/L | ≤ 1.5 mg/L | within the limit |
| Escherichia coli | <1 n/(100mL) | ≤ 0 mL) | within the limit |
| Enterococci | <1 n/(100mL) | ≤ 0 mL) | within the limit |
| Coliform bacteria | <1 n/(100mL) | ≤ 0 mL) | within the limit |
| pH | 7.32 unité pH | 6.5–9.5 pH | within the limit |
| Water hardness | 29.5 °f | no limit | for reference |
| Electrical conductivity | 553 µS/cm | 200–1,100 µS/cm | within the limit |
| Chloride | 1.07 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 8 mg/L | ≤ 250 mg/L | within the limit |
| Sodium | 0.84 mg/L | ≤ 200 mg/L | within the limit |
| Iron | <10 µg/L | ≤ 200 µg/L | within the limit |
| Turbidity | <0,20 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in Desingy safe to drink?
Yes. At the check on 31 March 2026, the tap water in Desingy was within every limit tested. “Eau d'alimentation conforme aux limites de qualité et non conforme aux références de qualité.”
How high are PFAS levels in Desingy's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at 25 ng/L. The EU limit is 100 ng/L, so this water is at 25 % of the limit. (below the EU limit)
Does the water in Desingy also meet the strictest limits in Europe?
No. The four most harmful PFAS add up to 25 ng/L. That is 6.3 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 Desingy's tap water?
No clear trend. Since 14 October 2025, 5 checks have been published; on the main network the PFAS-4 sum ranged between 26 ng/L and 48 ng/L (3 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 Desingy?
The water hardness in Desingy is 29.5 °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 12 September 2026.
Nearby communes
The closest to Desingy 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=74100
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 12 September 2026
- Supply networks
- PLANAZ, SENOY, PRINCIPAL DE DESINGY, SORNIER, VENCIERES
Water report for Desingy
Get new PFAS results for Desingy, 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.