PFAS in Écollemont'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.
Sample taken in Arrigny, on the same distribution network as Écollemont (SIAEP DE LARZICOURT ISLE-SUR-MARNE). 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.
checked on 20 January 2026
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide perfluorododécane sulfonique (PFDoDS) | <0,001 µg/L |
| Acide perfluoro-octanoïque (PFOA) | <0,001 µg/L |
| Acide perfluoropentanoïque (PFPEA) | <0,001 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,001 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,002 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,001 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | <0,001 µg/L |
| Acide perfluorohexanoïque (PFHXA) | <0,002 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | <0,001 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,001 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,005 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,001 µg/L |
| Perfluorohexane sulfonate (PFHXS) | <0,001 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,002 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,001 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,001 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,001 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,002 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,002 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <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 Écollemont
Get new PFAS results for Écollemont, 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
- 20 January 2026
- Water supplier
- SAUR FRANCE (89)
In Écollemont, none of the 4 most closely watched PFAS (PFAS-4) was detected at the latest PFAS check on 20 January 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 Arrigny, on the same network. 2 checks since 23 May 2025, sum of 20 PFAS always below the detection limit (29 ng/L). Source: Hub'eau, Qualité de l'eau potable (Ministère de la Santé / OFB / BRGM).
Details and sources
PFAS over time in Écollemont
2 PFAS checks since 23 May 2025, from the published measurements. Samples from 2 communes on the same network: it's the same water, so each one applies to Écollemont.
“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 |
|---|---|---|---|
| < 4 ng/L · calculated | < 29 ng/L | Arrigny | |
| < 4 ng/L · calculated | < 100 ng/L | Isle-sur-Marne |
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: Turbidity 2.5 NFU on 13 March 2026 (reference ≤ 2 NFU). These are indicator parameters with reference values, not legal limits.
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Turbidity | 2.5 NFU | ≤ 2 NFU | above the reference value |
See all 12 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 1.9 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | <0,010 mg/L | ≤ 0.5 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 | 7.7 unité pH | 6.5–9 unité pH | within the limit |
| Water hardness | 44.5 °f | no limit | for reference |
| Electrical conductivity | 905 µS/cm | 200–1,100 µS/cm | within the limit |
| Chloride | 25.1 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 121 mg/L | ≤ 250 mg/L | within the limit |
| Iron | 62 µg/L | ≤ 200 µg/L | within the limit |
| Turbidity | 2.5 NFU | ≤ 2 NFU | above the reference value |
Frequently asked questions
Is tap water in Écollemont safe to drink?
Yes. At the check on 13 March 2026, the tap water in Écollemont was within every limit tested. Outside a reference value: Turbidity 2.5 NFU on 13 March 2026 (reference ≤ 2 NFU). These are indicator parameters with reference values, not legal limits. “Eau d'alimentation conforme aux exigences microbiologiques réglementaires. Toutefois, le résultat des analyses révèle une turbidité supérieure à la référence de qualité réglementaire fixée à 2 NFU pour une eau destinée à la consommation humaine. L'eau et les installations sont à surveiller. Des purges ponctuelles sur le réservoir et en distribution sont nécessaires dans l'immédiat. On note également une valeur de CHLORE LIBRE élevée. La concentration en chlore devra être maintenue inférieure à 0,5 mg/l sur le réseau de distribution.”
How high are PFAS levels in Écollemont'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 Écollemont 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 Écollemont'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 Écollemont?
The water hardness in Écollemont is 44.5 °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 Écollemont, so in principle the same water.
Nearby communes
The closest to Écollemont 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=51223
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 12 September 2026
- Supply networks
- SIAEP DE LARZICOURT ISLE-SUR-MARNE
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.