PFAS in Fourilles's tap water: under 4 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

Amount found in the water < 4 ng/L the 4 most harmful PFAS (PFAS-4) · the lab's detection limit 20 PFAS looked for, 3 ng/L found in total
Our health benchmark 0.5 ng/L

The lab sees nothing below 4 ng/L, 8 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 Chantelle, on the same distribution network as Fourilles (RESEAU SIOULE ET BOUBLE). 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 ng/L upward. None reached that limit, so their total is below 4 ng/L rather than zero.

20 PFAS (see each substance)
PFAS substance Value
Acide perfluoropentanoïque (PFPEA) 0.003 µg/L
Acide perfluoro undecanoïque (PFUnA) <0,001 µg/L
Acide perfluorononane sulfonique (PFNS) <0,002 µg/L
Acide perfluoro tridecane sulfonique (PFTrDS) <0,005 µg/L
Perfluorohexane sulfonate (PFHXS) <0,001 µg/L
Acide perfluorobutanoïque (PFBA) <0,002 µg/L
Acide perfluoropentane sulfonique (PFPS) <0,001 µg/L
Acide perfluoro-decanoïque (PFDA) <0,001 µg/L
Acide perfluorododécanoique (PFDoDA) <0,001 µg/L
Acide sulfonique de perfluorobutane (PFBS) <0,001 µg/L
Acide sulfonique de perfluorooctane (PFOS) <0,001 µg/L
Acide perfluorododécane sulfonique (PFDoDS) <0,001 µg/L
Acide perfluorohexanoïque (PFHXA) <0,002 µg/L
Acide perfluoro tridecanoique (PFTrDA) <0,001 µg/L
Acide perfluoro undecane sulfonique (PFUnDS) <0,002 µg/L
Acide perfluoroheptanoïque (PFHPA) <0,001 µg/L
Acide perfluoroheptane sulfonique (PFHpS) <0,002 µg/L
Acide perfluorodecane sulfonique (PFDS) <0,001 µg/L
Acide perfluoro-octanoïque (PFOA) <0,001 µg/L
Acide perfluoro-nonanoïque (PFNA) <0,001 µg/L

None found. The lab sees nothing below 4 ng/L, so our 0.5 ng/L benchmark cannot be checked.

EU legal limit
3 ng/L sum of 20 PFAS, below the 100 ng/L limit
Last PFAS test
15 July 2026
Water supplier
SIVOM SIOULE ET BOUBLE

In Fourilles, none of the 4 most closely watched PFAS (PFAS-4) was detected at the latest PFAS check on 15 July 2026. The total is below 4 ng/L, the sum of the detection limits and 8 times our 0.5 ng/L benchmark. Sum of 20 PFAS: 3 ng/L (0.003 µg/L), below the EU legal limit (100 ng/L). Sampled in Chantelle, on the same network. 3 checks since 4 November 2025, PFAS-4 always below the detection limit (4 ng/L). Source: Hub'eau, Qualité de l'eau potable (Ministère de la Santé / OFB / BRGM).

Details and sources
Water supplier: SIVOM SIOULE ET BOUBLE Latest water check: 15 July 2026 Data updated on

PFAS over time in Fourilles

5 PFAS checks since 4 March 2025, from the published measurements. Samples from 3 communes on the same network: it's the same water, so each one applies to Fourilles.

“Calculated”: PFAS-4 worked out from the four substances in the same sample. The chart, averages and trends use lab-published sums only.

DatePFAS-4Sum of 20 PFASSampled at
< 4 ng/L3 ng/LChantelle
< 4 ng/L9 ng/LBellenaves
< 4 ng/L2 ng/LBègues
< 4 ng/L · calculated2 ng/LBègues
< 4 ng/L · calculated5 ng/LBègues

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.

Microbiology: within the limit Chemistry: within the limit

Values to watch

These results are close to their legal limit, or over it.

Outside a reference value: Coliform bacteria 3 n/(100mL) on 15 July 2026 (reference ≤ 0 mL)). These are indicator parameters with reference values, not legal limits.

What was tested Value Limit Status
Arsenic 7 µg/L ≤ 10 µg/L within the limit
Coliform bacteria 3 n/(100mL) ≤ 0 mL) above the reference value
See all 17 test results
What was tested Value Limit Status
Nitrate 7.5 mg/L ≤ 50 mg/L within the limit
Nitrite <0,01 mg/L ≤ 0.5 mg/L within the limit
Lead <2 µg/L ≤ 10 µg/L within the limit
Copper 0.027 mg(Cu)/L ≤ 2 mg(Cu)/L within the limit
Nickel <5 µg/L ≤ 20 µg/L within the limit
Arsenic 7 µg/L ≤ 10 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 3 n/(100mL) ≤ 0 mL) above the reference value
pH 6.9 unité pH 6.5–9 unité pH within the limit
Electrical conductivity 235 µS/cm 200–1,100 µS/cm within the limit
Chloride 13.3 mg/L ≤ 250 mg/L within the limit
Sulphate 22.2 mg/L ≤ 250 mg/L within the limit
Iron 59 µg/L ≤ 200 µg/L within the limit
Turbidity 0.2 NFU ≤ 2 NFU within the limit

Frequently asked questions

Is tap water in Fourilles safe to drink?

Yes. At the check on 15 July 2026, the tap water in Fourilles was within every limit tested. Outside a reference value: Coliform bacteria 3 n/(100mL) on 15 July 2026 (reference ≤ 0 mL)). These are indicator parameters with reference values, not legal limits. “Eau d'alimentation conforme aux limites de qualité pour ce qui concerne les paramètres mesurés. La référence de qualité du paramètre bactéries coliformes n'est pas satisfaite.”

How high are PFAS levels in Fourilles's drinking water?

The total of 20 PFAS ("forever chemicals") was last measured at 3 ng/L. The EU limit is 100 ng/L, so this water is at 3 % of the limit. (below the EU limit)

Does the water in Fourilles also meet the strictest limits in Europe?

As far as this check can tell, yes. None of the four compounds was quantified, so their total is below 4 ng/L, the sum of the laboratory's detection limits, and under Sweden's legal limit of 4 ng/L in force since 2026.

Are PFAS levels rising in Fourilles's tap water?

No. Since 4 March 2025, 3 checks have been published and the PFAS-4 sum stayed below the laboratory's detection limit (4 ng/L) every time. These history statistics use laboratory-published sums only.

How hard is the water in Fourilles?

No hardness value is available for Fourilles in this source.

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.

Same water network

Same distribution network as Fourilles, so in principle the same water.

Nearby communes

The closest to Fourilles 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=03116
License
Licence Ouverte / Open Licence (Etalab)
Retrieved
21 September 2026
Supply networks
RESEAU SIOULE ET BOUBLE

This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.