PFAS in Billezois's tap water: under 4 ng/L, none of the four main PFAS detected

Last PFAS check: · Source: Hub'eau

PFAS in drinking water

No 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, none found
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 Le Breuil, on the same distribution network as Billezois (RESEAU ARFEUILLES). 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 perfluorododécane sulfonique (PFDoDS) <0,001 µg/L
Acide sulfonique de perfluorooctane (PFOS) <0,001 µg/L
Acide perfluoro tridecanoique (PFTrDA) <0,001 µg/L
Acide perfluoropentane sulfonique (PFPS) <0,001 µg/L
Acide perfluorononane sulfonique (PFNS) <0,002 µg/L
Acide perfluorododécanoique (PFDoDA) <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 tridecane sulfonique (PFTrDS) <0,005 µg/L
Acide perfluorobutanoïque (PFBA) <0,002 µg/L
Perfluorohexane sulfonate (PFHXS) <0,001 µg/L
Acide perfluoroheptanoïque (PFHPA) <0,001 µg/L
Acide sulfonique de perfluorobutane (PFBS) <0,001 µg/L
Acide perfluoropentanoïque (PFPEA) <0,001 µg/L
Acide perfluoro-decanoïque (PFDA) <0,001 µg/L
Acide perfluorohexanoïque (PFHXA) <0,002 µg/L
Acide perfluoro undecanoïque (PFUnA) <0,001 µg/L
Acide perfluoro-nonanoïque (PFNA) <0,001 µg/L
Acide perfluoro undecane sulfonique (PFUnDS) <0,002 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
none detected sum of 20 PFAS below the detection limit, limit 100 ng/L
Last PFAS test
28 May 2026
Water supplier
SYNDICAT MIXTE VALLEE DE LA BESBRE

In Billezois, none of the 4 most closely watched PFAS (PFAS-4) was detected at the latest PFAS check on 28 May 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: <0,029 µg/L, below the EU legal limit (100 ng/L). Sampled in Le Breuil, on the same network. 3 checks since 23 September 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: SYNDICAT MIXTE VALLEE DE LA BESBRE Latest water check: 29 June 2026 Data updated on

PFAS over time in Billezois

5 PFAS checks since 25 March 2025, from the published measurements. Samples from 3 communes on the same network: it's the same water, so each one applies to Billezois. Samples come from 2 distribution networks. The trend refers to the network “RESEAU BESBRE”.

“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 atNetwork
< 4 ng/L< 29 ng/LLe BreuilRESEAU ARFEUILLES
< 4 ng/L< 29 ng/LLapalisseRESEAU BESBRE, RESEAU ARFEUILLES
< 4 ng/L< 29 ng/LLapalisseRESEAU BESBRE
< 4 ng/L · calculated1 ng/LArfeuillesRESEAU ARFEUILLES
< 4 ng/L · calculated< 100 ng/LLapalisseRESEAU BESBRE

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.

What was tested Value Limit Status
Arsenic 5 µg/L ≤ 10 µg/L within the limit
See all 12 test results
What was tested Value Limit Status
Nitrate 4.3 mg/L ≤ 50 mg/L within the limit
Nitrite <0,01 mg/L ≤ 0.5 mg/L within the limit
Arsenic 5 µg/L ≤ 10 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 8.1 unité pH 6.5–9 unité pH within the limit
Water hardness 7.58 °f no limit for reference
Electrical conductivity 213 µS/cm 200–1,100 µS/cm within the limit
Chloride 9.4 mg/L ≤ 250 mg/L within the limit
Sulphate 8.1 mg/L ≤ 250 mg/L within the limit
Turbidity 0.1 NFU ≤ 2 NFU within the limit

Frequently asked questions

Is tap water in Billezois safe to drink?

Yes. At the check on 29 June 2026, the tap water in Billezois was within every limit tested. “Eau conforme aux limites et aux références de qualité pour ce qui concerne les paramètres mesurés.”

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

At the latest check the total of 20 PFAS ("forever chemicals") was below the laboratory's reporting limit of 29 ng/L. The EU limit is 100 ng/L, so this water is under 29 % of the limit. (below the EU limit)

Does the water in Billezois 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 Billezois's tap water?

Too few quantified checks to say (0 since 25 March 2025). pfasnearme adds each new publication weekly; a trend needs at least three quantified values. These history statistics use laboratory-published sums only.

How hard is the water in Billezois?

The water hardness in Billezois is 7.6 °f (soft). 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.

Same water network

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

Nearby communes

The closest to Billezois 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=03028
License
Licence Ouverte / Open Licence (Etalab)
Retrieved
21 September 2026
Supply networks
RESEAU BESBRE, RESEAU ARFEUILLES

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