PFAS in Ranchot's tap water: 10 ng/L, 20x our 0.5 ng/L benchmark
Last PFAS check: · Source: Hub'eau
PFAS in drinking water
20× 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.
Sample taken in Dampierre, on the same distribution network as Ranchot (SIAEP DOUBS-JURA - DAMPIERRE ). 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.
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 96% of the cities we track
checked on 15 April 2025
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide sulfonique de perfluorooctane (PFOS) | 0.009 µg/L |
| Acide perfluorobutanoïque (PFBA) | 0.002 µg/L |
| Acide perfluoro-octanoïque (PFOA) | 0.001 µg/L |
| Acide perfluoropentanoïque (PFPEA) | 0.001 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,002 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,001 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,001 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,001 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | <0,001 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,001 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,002 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,001 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,001 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,005 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,001 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,001 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,002 µg/L |
| Acide perfluorohexanoïque (PFHXA) | <0,002 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,002 µg/L |
| Perfluorohexane sulfonate (PFHXS) | <0,001 µg/L |
Above our health benchmark. Here are some filter options.
- EU legal limit
- 13 ng/L sum of 20 PFAS, below the 100 ng/L limit
- Last PFAS test
- 15 April 2025
- Water supplier
- SIAEP DOUBS JURA
In Ranchot, the 4 most closely watched PFAS (PFAS-4) add up to 10 ng/L (0.01 µg/L) at the latest PFAS check on 15 April 2025. That's 20 times our 0.5 ng/L health benchmark, and above Sweden's legal limit of 4 ng/L. Sum of 20 PFAS: 13 ng/L (0.013 µg/L), below the EU legal limit (100 ng/L). Sampled in Dampierre, on the same network. Source: Hub'eau, Qualité de l'eau potable (Ministère de la Santé / OFB / BRGM).
Details and sources
PFAS over time in Ranchot
A single PFAS check has been published for Ranchot so far (15 April 2025). A history will build up with the next checks; this page is refreshed weekly.
What the latest check found
At the latest check, the water was within every limit tested.
Values to watch
These results are close to their legal limit, or over it.
Outside a reference value: Turbidity 2.1 NFU on 24 February 2026 (reference ≤ 2 NFU). These are indicator parameters with reference values, not legal limits.
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Lead | 5 µg/L | ≤ 10 µg/L | within the limit |
| Turbidity | 2.1 NFU | ≤ 2 NFU | above the reference value |
See all 17 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 9.3 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | 0 mg/L | ≤ 0.5 mg/L | within the limit |
| Lead | 5 µg/L | ≤ 10 µg/L | within the limit |
| Copper | 0.392 mg(Cu)/L | ≤ 2 mg(Cu)/L | within the limit |
| Nickel | <5 µg/L | ≤ 20 µg/L | within the limit |
| Cadmium | <1 µg/L | ≤ 5 µg/L | within the limit |
| Chromium | <5 µg/L | ≤ 50 µg/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 | 7.4 unité pH | 6.5–9 unité pH | within the limit |
| Water hardness | 21.1 °f | no limit | for reference |
| Electrical conductivity | 422 µS/cm | 200–1,100 µS/cm | within the limit |
| Chloride | 8 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 9.8 mg/L | ≤ 250 mg/L | within the limit |
| Iron | 107 µg/L | ≤ 200 µg/L | within the limit |
| Turbidity | 2.1 NFU | ≤ 2 NFU | above the reference value |
Frequently asked questions
Is tap water in Ranchot safe to drink?
Yes. At the check on 24 February 2026, the tap water in Ranchot was within every limit tested. Outside a reference value: Turbidity 2.1 NFU on 24 February 2026 (reference ≤ 2 NFU). These are indicator parameters with reference values, not legal limits. “Eau d'alimentation conforme aux limites de qualité et non conforme aux références de qualité. Référence de qualité non satisfaisante pour les paramètres suivants : Turbidité. Eau distribuée turbide.”
How high are PFAS levels in Ranchot's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at 13 ng/L. The EU limit is 100 ng/L, so this water is at 13 % of the limit. (below the EU limit)
Does the water in Ranchot also meet the strictest limits in Europe?
No. The four most harmful PFAS add up to 10 ng/L. That is 2.5 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).
How hard is the water in Ranchot?
The water hardness in Ranchot is 21.1 °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 12 September 2026.
Same water network
Same distribution network as Ranchot, so in principle the same water.
Nearby communes
The closest to Ranchot 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=39451
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 12 September 2026
- Supply networks
- SIAEP DOUBS-JURA - DAMPIERRE
Water report for Ranchot
Get new PFAS results for Ranchot, 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.