PFAS in Bersac-sur-Rivalier'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
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.
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.
checked on 5 May 2026
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide sulfonique de perfluorobutane (PFBS) | <0,001 µg/L |
| Acide perfluorohexanoïque (PFHXA) | <0,001 µg/L |
| Perfluorohexane sulfonate (PFHXS) | <0,001 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,001 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,001 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,001 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,001 µg/L |
| Acide perfluoro-octanoïque (PFOA) | <0,001 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,001 µg/L |
| Acide perfluoropentanoïque (PFPEA) | <0,05 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,001 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | <0,001 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,001 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,001 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,001 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | <0,001 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,001 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,05 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,001 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,001 µg/L |
None found. The lab sees nothing below 4 ng/L, so our 0.5 ng/L benchmark cannot be checked.
Water report for Bersac-sur-Rivalier
Get new PFAS results for Bersac-sur-Rivalier, with a short explanation. At most one update a week, only when there's something new.
- EU legal limit
- none detected sum of 20 PFAS below the detection limit, limit 100 ng/L
- Last PFAS test
- 5 May 2026
- Water supplier
- COMMUNE DE BERSAC-SUR-RIVALIER
In Bersac-sur-Rivalier, none of the 4 most closely watched PFAS (PFAS-4) was detected at the latest PFAS check on 5 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: <SEUIL µg/L, below the EU legal limit (100 ng/L). 5 checks since 9 April 2025, sum of 20 PFAS always below the detection limit. Source: Hub'eau, Qualité de l'eau potable (Ministère de la Santé / OFB / BRGM).
Details and sources
PFAS over time in Bersac-sur-Rivalier
5 PFAS checks since 9 April 2025, from the published measurements. Samples come from 13 distribution networks. The trend refers to the network “LAILLOUX”.
“Calculated”: PFAS-4 worked out from the four substances in the same sample. The chart, averages and trends use lab-published sums only.
| Date | PFAS-4 | Sum of 20 PFAS | Network |
|---|---|---|---|
| < 4 ng/L · calculated | < detection limit | 087000271, 087000275 +10 | |
| < 4 ng/L · calculated | < detection limit | LAILLOUX | |
| < 4 ng/L · calculated | < detection limit | BERSAC SUR RIVALIER | |
| < 4 ng/L · calculated | < detection limit | LAILLOUX | |
| < 4 ng/L · calculated | < detection limit | BERSAC SUR RIVALIER |
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.
Values to watch
These results are close to their legal limit, or over it.
Outside a reference value: Electrical conductivity 123 µS/cm on 3 June 2026 (reference 200–1,100 µS/cm). These are indicator parameters with reference values, not legal limits.
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Electrical conductivity | 123 µS/cm | 200–1,100 µS/cm | below the reference value |
See all 21 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 3.7 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | <0,01 mg/L | ≤ 0.5 mg/L | within the limit |
| Lead | <0,2 µg/L | ≤ 10 µg/L | within the limit |
| Copper | 0.0007 mg(Cu)/L | ≤ 2 mg(Cu)/L | within the limit |
| Nickel | <0,5 µg/L | ≤ 20 µg/L | within the limit |
| Arsenic | 0.5 µg/L | ≤ 10 µg/L | within the limit |
| Cadmium | <0,02 µg/L | ≤ 5 µg/L | within the limit |
| Chromium | <0,5 µg/L | ≤ 50 µg/L | within the limit |
| Uranium | <0,02 µg/L | ≤ 30 µg/L | within the limit |
| Fluoride | <0,1 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 | 8.3 unité pH | 6.5–9 unité pH | within the limit |
| Water hardness | 4.3 °f | no limit | for reference |
| Electrical conductivity | 123 µS/cm | 200–1,100 µS/cm | below the reference value |
| Chloride | 6.7 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 1.5 mg/L | ≤ 250 mg/L | within the limit |
| Sodium | 9.9 mg/L | ≤ 200 mg/L | within the limit |
| Iron | 2 µg/L | ≤ 200 µg/L | within the limit |
| Turbidity | <0,3 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in Bersac-sur-Rivalier safe to drink?
Yes. At the check on 3 June 2026, the tap water in Bersac-sur-Rivalier was within every limit tested. Outside a reference value: Electrical conductivity 123 µS/cm on 3 June 2026 (reference 200–1,100 µS/cm). These are indicator parameters with reference values, not legal limits. “Minéralisation insuffisante nécessitant une adaptation du traitement (recharge en matériau calcaire, injection de gaz carbonique…) pour obtenir une reminéralisation suffisante (conductivité > 200 µS/cm) et un pH d’équilibre voisin de pH 8,0. Les autres paramètres sont conformes.”
How high are PFAS levels in Bersac-sur-Rivalier's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at –. The EU limit is 100 ng/L, so this water is at – of the limit. (below the EU limit)
Does the water in Bersac-sur-Rivalier 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 Bersac-sur-Rivalier's tap water?
Calculated PFAS-4 values are listed in the table. The chart uses laboratory-published sum-of-20 results; there are too few laboratory-published PFAS-4 sums for the existing trend calculation.
How hard is the water in Bersac-sur-Rivalier?
The water hardness in Bersac-sur-Rivalier is 4.3 °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 12 September 2026.
Nearby communes
The closest to Bersac-sur-Rivalier 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=87013
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 12 September 2026
- Supply networks
- LAILLOUX, BERSAC SUR RIVALIER
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.