PFAS in Lesges'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 18 April 2025
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide perfluorododécanoique (PFDoDA) | <0,001 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,001 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,001 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,001 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | <0,001 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,002 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,001 µg/L |
| Perfluorohexane sulfonate (PFHXS) | <0,001 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,001 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,001 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | <0,001 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,005 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,001 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,002 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,002 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,001 µg/L |
| Acide perfluorohexanoïque (PFHXA) | <0,002 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,001 µg/L |
| Acide perfluoro-octanoïque (PFOA) | <0,001 µg/L |
| Acide perfluoropentanoïque (PFPEA) | <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 Lesges
Get new PFAS results for Lesges, 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
- 18 April 2025
- Water supplier
- SYNDICAT DES EAUX DU SOISSONNAIS ET DU VALOIS
In Lesges, none of the 4 most closely watched PFAS (PFAS-4) was detected at the latest PFAS check on 18 April 2025. 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: <0,100 µg/L, below the EU legal limit (100 ng/L). 2 checks since 12 March 2025: sum of 20 PFAS up to 16 ng/L, sometimes 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 Lesges
2 PFAS checks since 12 March 2025, from the published measurements. Samples from 2 communes on the same network: it's the same water, so each one applies to Lesges. Samples come from 2 distribution networks. The trend refers to the network “UDI DE LESGES”.
“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 | Sampled at | Network |
|---|---|---|---|---|
| < 4 ng/L · calculated | < 100 ng/L | Lesges | UDI DE LESGES, UDI DE LESGES | |
| 4 ng/L – < 6 ng/L · calculated | 16 ng/L | Ciry-Salsogne | UDI DE LA VALLEE DE LA VESLE |
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: Iron 272 µg/L on 13 November 2025 (reference ≤ 200 µg/L), Turbidity 3.8 NFU on 13 November 2025 (reference ≤ 2 NFU). These are indicator parameters with reference values, not legal limits.
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 32.1 mg/L | ≤ 50 mg/L | within the limit |
| Iron | 272 µg/L | ≤ 200 µg/L | above the reference value |
| Turbidity | 3.8 NFU | ≤ 2 NFU | above the reference value |
See all 15 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 32.1 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | 0.108 mg/L | ≤ 0.5 mg/L | within the limit |
| Arsenic | <5 µg/L | ≤ 10 µg/L | within the limit |
| Fluoride | 0.27 mg/L | ≤ 1.5 mg/L | within the limit |
| Escherichia coli | 0 n/(100mL) | ≤ 0 mL) | within the limit |
| Enterococci | 0 n/(100mL) | ≤ 0 mL) | within the limit |
| Coliform bacteria | 0 n/(100mL) | ≤ 0 mL) | within the limit |
| pH | 7 unité pH | 6.5–9 unité pH | within the limit |
| Water hardness | 44.8 °f | no limit | for reference |
| Electrical conductivity | 935 µS/cm | 200–1,100 µS/cm | within the limit |
| Chloride | 33.1 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 99 mg/L | ≤ 250 mg/L | within the limit |
| Sodium | 15.1 mg/L | ≤ 200 mg/L | within the limit |
| Iron | 272 µg/L | ≤ 200 µg/L | above the reference value |
| Turbidity | 3.8 NFU | ≤ 2 NFU | above the reference value |
Frequently asked questions
Is tap water in Lesges safe to drink?
Yes. At the check on 13 November 2025, the tap water in Lesges was within every limit tested. Outside a reference value: Iron 272 µg/L on 13 November 2025 (reference ≤ 200 µg/L), Turbidity 3.8 NFU on 13 November 2025 (reference ≤ 2 NFU). These are indicator parameters with reference values, not legal limits. “Eau d’alimentation conforme aux limites de qualité en vigueur mais non satisfaisante à la référence de qualité pour le paramètre fer et p our le paramètre turbidité. Il est demandé de remédier à la situation de non-conformité constatée. En attendant, l'eau reste consommable.”
How high are PFAS levels in Lesges's drinking water?
At the latest check the total of 20 PFAS ("forever chemicals") was below the laboratory's reporting limit of 100 ng/L. The EU limit is 100 ng/L, so this water is under 100 % of the limit. (below the EU limit)
Does the water in Lesges 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 Lesges'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 Lesges?
The water hardness in Lesges is 44.8 °f (hard). 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 Lesges, so in principle the same water.
Nearby communes
The closest to Lesges 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=02421
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 12 September 2026
- Supply networks
- UDI DE LESGES, UDI DE LA VALLEE DE LA VESLE
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.