PFAS in Roissy-en-France's tap water: under 8 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 8 ng/L, 16 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 2 ng/L upward. None reached that limit, so their total is below 8 ng/L rather than zero.
checked on 28 July 2026
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide perfluoro undecanoïque (PFUnA) | <0,002 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,002 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,002 µg/L |
| Acide perfluorohexanoïque (PFHXA) | <0,005 µg/L |
| Perfluorohexane sulfonate (PFHXS) | <0,002 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,002 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,002 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,005 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,002 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | <0,002 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,002 µg/L |
| Acide perfluoropentanoïque (PFPEA) | <0,005 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,002 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,002 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,002 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,002 µg/L |
| Acide perfluoro-octanoïque (PFOA) | <0,002 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | <0,002 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,002 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,005 µg/L |
None found. The lab sees nothing below 8 ng/L, so our 0.5 ng/L benchmark cannot be checked.
Water report for Roissy-en-France
Get new PFAS results for Roissy-en-France, 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
- 28 July 2026
- Water supplier
- AEROPORT DE PARIS ROISSY CDG
In Roissy-en-France, none of the 4 most closely watched PFAS (PFAS-4) was detected at the latest PFAS check on 28 July 2026. The total is below 8 ng/L, the sum of the detection limits and 16 times our 0.5 ng/L benchmark. Sum of 20 PFAS: <0,005 µg/L, below the EU legal limit (100 ng/L). 6 checks since 14 January 2026: PFAS-4 from 1 ng/L to 5 ng/L, averaging 2.17 ng/L over 12 months. Falling on the main network. Source: Hub'eau, Qualité de l'eau potable (Ministère de la Santé / OFB / BRGM).
Details and sources
PFAS over time in Roissy-en-France
19 PFAS checks since 12 March 2025, from the published measurements. Samples from 4 communes on the same network: it's the same water, so each one applies to Roissy-en-France. Samples come from 3 distribution networks. The trend refers to the network “ROISSY ZONE HOTELIERE”.
“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 |
|---|---|---|---|---|
| < 8 ng/L · calculated | < 5 ng/L | Roissy-en-France | 093000094 | |
| < 8 ng/L · calculated | < 5 ng/L | Roissy-en-France | 093000094 | |
| 1 ng/L | 3 ng/L | Annet-sur-Marne | ROISSY ZONE HOTELIERE | |
| 5 ng/L | 6 ng/L | Le Pin | ROISSY ZONE HOTELIERE | |
| 2 ng/L | 4 ng/L | Annet-sur-Marne | ROISSY ZONE HOTELIERE | |
| 2 ng/L | 4 ng/L | Thorigny-sur-Marne | ROISSY ZONE HOTELIERE | |
| 1 ng/L | 3 ng/L | Annet-sur-Marne | ROISSY ZONE HOTELIERE | |
| 2 ng/L | 5 ng/L | Le Pin | ROISSY ZONE HOTELIERE | |
| < 4 ng/L · calculated | < 29 ng/L | Thorigny-sur-Marne | ROISSY ZONE HOTELIERE | |
| 2 ng/L – < 4 ng/L · calculated | 8 ng/L | Annet-sur-Marne | ROISSY ZONE HOTELIERE | |
| 1 ng/L – < 4 ng/L · calculated | 5 ng/L | Le Pin | ROISSY ZONE HOTELIERE | |
| 6 ng/L – < 7 ng/L · calculated | 18 ng/L | Thorigny-sur-Marne | ROISSY ZONE HOTELIERE |
Show the 7 earlier checks (back to 12 March 2025)
| 5 ng/L – < 6 ng/L · calculated | 18 ng/L | Annet-sur-Marne | ROISSY ZONE HOTELIERE | |
| 3 ng/L – < 4 ng/L · calculated | 10 ng/L | Roissy-en-France | ROISSY EN FRANCE | |
| 5 ng/L – < 6 ng/L · calculated | 13 ng/L | Le Pin | ROISSY ZONE HOTELIERE | |
| 4 ng/L – < 6 ng/L · calculated | 12 ng/L | Thorigny-sur-Marne | ROISSY ZONE HOTELIERE | |
| 4 ng/L – < 6 ng/L · calculated | 14 ng/L | Annet-sur-Marne | ROISSY ZONE HOTELIERE | |
| 3 ng/L – < 5 ng/L · calculated | 6 ng/L | Le Pin | ROISSY ZONE HOTELIERE | |
| 4 ng/L – < 6 ng/L · calculated | 14 ng/L | Roissy-en-France | ROISSY EN FRANCE |
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.
See all 21 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 10.1 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | <0,01 mg/L | ≤ 0.5 mg/L | within the limit |
| Lead | 1.5 µg/L | ≤ 10 µg/L | within the limit |
| Copper | 0.137 mg(Cu)/L | ≤ 2 mg(Cu)/L | within the limit |
| Nickel | 8.2 µg/L | ≤ 20 µg/L | within the limit |
| Arsenic | 0.58 µg/L | ≤ 10 µg/L | within the limit |
| Cadmium | <1,00 µg/L | ≤ 5 µg/L | within the limit |
| Chromium | <5,000 µg/L | ≤ 6 µg/L | within the limit |
| Uranium | 0.41 µg/L | ≤ 30 µg/L | within the limit |
| Fluoride | 0.24 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 | 7.6 unité pH | 6.5–9 unité pH | within the limit |
| Water hardness | 31.7 °f | no limit | for reference |
| Electrical conductivity | 535 µS/cm | 200–1,100 µS/cm | within the limit |
| Chloride | 26.8 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 53.4 mg/L | ≤ 250 mg/L | within the limit |
| Sodium | 15.5 mg/L | ≤ 200 mg/L | within the limit |
| Iron | <20,0 µg/L | ≤ 200 µg/L | within the limit |
| Turbidity | <0,10 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in Roissy-en-France safe to drink?
Yes. At the check on 28 July 2026, the tap water in Roissy-en-France was within every limit tested. “Résultats conformes aux limites de qualité en ce qui concerne les paramètres bactériologiques et physico-chimiques mesurés. Cependant, on peut noter la présence de germes aérobies. Si la présence de ce type de micro-organismes à cette concentration ne constitue pas un risque sanitaire, elle est cependant le témoin d’une dégradation de la qualité de l’eau, signe d'une défaillance de la désinfection ou d'une dégradation de l'eau au cours de la distribution ou au point de prélèvement (stagnation, vieillissement des installations, des canalisations). Suite à une décontamination du point de prélèvement, le recontrôle du 31/07/2026 indique un retour à la normale.”
How high are PFAS levels in Roissy-en-France's drinking water?
At the latest check the total of 20 PFAS ("forever chemicals") was below the laboratory's reporting limit of 5 ng/L. The EU limit is 100 ng/L, so this water is under 5 % of the limit. (below the EU limit)
Does the water in Roissy-en-France also meet the strictest limits in Europe?
The check cannot say. None of the four compounds was quantified, but the laboratory's detection limits add up to 8 ng/L, above Sweden's legal limit of 4 ng/L in force since 2026, so a value between the two would go unnoticed.
Are PFAS levels rising in Roissy-en-France's tap water?
No, they are falling. On the main network, the PFAS-4 sum went from 2 ng/L (14 January 2026) to 1 ng/L (11 March 2026) across 6 quantified checks. These history statistics use laboratory-published sums only.
How hard is the water in Roissy-en-France?
The water hardness in Roissy-en-France is 31.7 °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 21 September 2026.
Nearby communes
The closest to Roissy-en-France 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=95527
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 21 September 2026
- Supply networks
- ROISSY EN FRANCE, ROISSY ZONE HOTELIERE
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.