pfasnearmeDrinking water quality from official sources

PFAS in Maurecourt's tap water: 37 ng/L, 74x our 0.5 ng/L benchmark

Last PFAS check: · Source: Hub'eau

PFAS in drinking water

74× above our health benchmark

Amount found in the water 37 ng/L 0.037 µg/L · the 4 most harmful PFAS (PFAS-4)
Our health benchmark 0.5 ng/L

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.

How we chose 0.5 ng/L

Sample taken in Achères, on the same distribution network as Maurecourt (MAURECOURT). The health authority samples one tap per network; a network carries the same treated water everywhere.

More about this result
Legal limit in Sweden (since 2026) over the limit
9.3× this limit 37 ng/L · Limit: 4 ng/L
Limit in Denmark (since 2021) over the limit
18.5× this limit 37 ng/L · Limit: 2 ng/L
Limit in Germany (from 2028) over the limit
1.85× this limit 37 ng/L · Limit: 20 ng/L

The US also limits PFOA and PFOS to 4 ng/L each, per substance.

Substances below the detection limit count as 0, so the real total may be higher.

One of these four, PFOA, is classified as causing cancer in humans by the WHO's cancer research agency (IARC).

More PFAS than in 100% of the cities we track

EU legal limit within the limit
65 % of the EU limit 0.065 µg/L · Limit: 0.1 µg/L

checked on 10 June 2026

20 PFAS (see each substance)
PFAS substance Value
Perfluorohexane sulfonate (PFHXS) 0.025 µg/L
Acide sulfonique de perfluorooctane (PFOS) 0.008 µg/L
Acide perfluorohexanoïque (PFHXA) 0.008 µg/L
Acide perfluoropentanoïque (PFPEA) 0.006 µg/L
Acide sulfonique de perfluorobutane (PFBS) 0.004 µg/L
Acide perfluoro-octanoïque (PFOA) 0.004 µg/L
Acide perfluoropentane sulfonique (PFPS) 0.004 µg/L
Acide perfluorobutanoïque (PFBA) 0.003 µg/L
Acide perfluoroheptanoïque (PFHPA) 0.003 µg/L
Acide perfluorodecane sulfonique (PFDS) <0,001 µg/L
Acide perfluoro-decanoïque (PFDA) <0,001 µg/L
Acide perfluoro tridecane sulfonique (PFTrDS) <0,005 µg/L
Acide perfluoro tridecanoique (PFTrDA) <0,001 µg/L
Acide perfluoro undecanoïque (PFUnA) <0,001 µg/L
Acide perfluoro-nonanoïque (PFNA) <0,001 µg/L
Acide perfluorododécanoique (PFDoDA) <0,001 µg/L
Acide perfluorononane sulfonique (PFNS) <0,002 µg/L
Acide perfluoro undecane sulfonique (PFUnDS) <0,002 µg/L
Acide perfluorododécane sulfonique (PFDoDS) <0,001 µg/L
Acide perfluoroheptane sulfonique (PFHpS) <0,002 µg/L

Above our health benchmark. Here are some filter options.

EU legal limit
65 ng/L sum of 20 PFAS, below the 100 ng/L limit
Last PFAS test
10 June 2026
Water supplier
VEOLIA EAU CERGY

In Maurecourt, the 4 most closely watched PFAS (PFAS-4) add up to 37 ng/L (0.037 µg/L) at the latest PFAS check on 10 June 2026. That's 74 times our 0.5 ng/L health benchmark, and above Sweden's legal limit of 4 ng/L. Sum of 20 PFAS: 65 ng/L (0.065 µg/L), below the EU legal limit (100 ng/L). Sampled in Achères, on the same network. 6 checks since 11 March 2026: PFAS-4 from 7 ng/L to 39 ng/L, averaging 28.6 ng/L over 12 months. No clear trend. Source: Hub'eau, Qualité de l'eau potable (Ministère de la Santé / OFB / BRGM).

Details and sources
Water supplier: VEOLIA EAU CERGY Latest water check: 10 June 2026 Data updated on

PFAS over time in Maurecourt

34 PFAS checks since 14 February 2025, from the published measurements. Samples from 4 communes on the same network: it's the same water, so each one applies to Maurecourt. Samples come from 2 distribution networks. The trend refers to the network “MAURECOURT”.

“Calculated”: PFAS-4 worked out from the four substances in the same sample. The chart, averages and trends use lab-published sums only.

0.5 ng/L39 ng/L011 March 202610 June 2026
PFAS-4 sum per check in ng/L. Dashed line: pfasnearme's 0.5 ng/L benchmark. Hollow dots: below the detection limit.
DatePFAS-4Sum of 20 PFASSampled atNetwork
37 ng/L65 ng/LAchèresMAURECOURT
8 ng/L25 ng/LAndrésyANDRESY, MAURECOURT
39 ng/L62 ng/LAchèresMAURECOURT
29 ng/L53 ng/LAchèresMAURECOURT
7 ng/L20 ng/LConflans-Sainte-HonorineANDRESY
< 4 ng/L · calculated1 ng/LMéry-sur-OiseANDRESY, MAURECOURT
30 ng/L51 ng/LAchèresMAURECOURT
< 4 ng/L · calculated< 29 ng/LMéry-sur-OiseANDRESY, MAURECOURT
< 4 ng/L · calculated3 ng/LMéry-sur-OiseANDRESY, MAURECOURT
< 4 ng/L · calculated< 29 ng/LMéry-sur-OiseANDRESY, MAURECOURT
32 ng/L – < 33 ng/L · calculated56 ng/LAchèresMAURECOURT
1 ng/L – < 4 ng/L · calculated10 ng/LMéry-sur-OiseANDRESY, MAURECOURT
Show the 22 earlier checks (back to 14 February 2025)
32 ng/L – < 33 ng/L · calculated58 ng/LAchèresMAURECOURT
< 4 ng/L · calculated2 ng/LMéry-sur-OiseANDRESY, MAURECOURT
10 ng/L – < 11 ng/L · calculated31 ng/LAndrésyANDRESY, MAURECOURT
41 ng/L – < 42 ng/L · calculated68 ng/LAchèresMAURECOURT
< 4 ng/L · calculated3 ng/LMéry-sur-OiseANDRESY, MAURECOURT
31 ng/L – < 32 ng/L · calculated54 ng/LAchèresMAURECOURT
1 ng/L – < 4 ng/L · calculated9 ng/LMéry-sur-OiseANDRESY, MAURECOURT
11 ng/L – < 12 ng/L · calculated29 ng/LAndrésyANDRESY, MAURECOURT
35 ng/L – < 36 ng/L · calculated59 ng/LAchèresMAURECOURT
1 ng/L – < 4 ng/L · calculated6 ng/LMéry-sur-OiseANDRESY, MAURECOURT
39 ng/L – < 40 ng/L · calculated66 ng/LAchèresMAURECOURT
< 4 ng/L · calculated3 ng/LMéry-sur-OiseANDRESY, MAURECOURT
1 ng/L – < 4 ng/L · calculated10 ng/LMéry-sur-OiseANDRESY, MAURECOURT
38 ng/L – < 39 ng/L · calculated65 ng/LAchèresMAURECOURT
< 4 ng/L · calculated4 ng/LMéry-sur-OiseANDRESY, MAURECOURT
43 ng/L – < 44 ng/L · calculated85 ng/LAchèresMAURECOURT
6 ng/L – < 7 ng/L · calculated20 ng/LAndrésyANDRESY, MAURECOURT
< 4 ng/L · calculated7 ng/LMéry-sur-OiseANDRESY, MAURECOURT
6 ng/L – < 7 ng/L · calculated16 ng/LAndrésyANDRESY, MAURECOURT
44 ng/L – < 45 ng/L · calculated76 ng/LAchèresMAURECOURT
< 4 ng/L · calculated2 ng/LMéry-sur-OiseANDRESY, MAURECOURT
< 4 ng/L · calculated1 ng/LMéry-sur-OiseANDRESY, MAURECOURT

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
See all 14 test results
What was tested Value Limit Status
Nitrate 20.6 mg/L ≤ 50 mg/L within the limit
Nitrite <0,01 mg/L ≤ 0.5 mg/L within the limit
Cadmium <1 µg/L ≤ 5 µg/L within the limit
Chromium <5 µg/L ≤ 50 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 7.75 unité pH 6.5–9 unité pH within the limit
Water hardness 8.64 °f no limit for reference
Electrical conductivity 570 µS/cm 200–1,100 µS/cm within the limit
Chloride 33.6 mg/L ≤ 250 mg/L within the limit
Sulphate 45.6 mg/L ≤ 250 mg/L within the limit
Iron <10 µg/L ≤ 200 µg/L within the limit
Turbidity <0,1 NFU ≤ 2 NFU within the limit

Frequently asked questions

Is tap water in Maurecourt safe to drink?

Yes. At the check on 10 June 2026, the tap water in Maurecourt was within every limit tested. “Eau d'alimentation conforme aux exigences de qualité en vigueur pour l'ensemble des paramètres mesurés.”

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

The total of 20 PFAS ("forever chemicals") was last measured at 65 ng/L. The EU limit is 100 ng/L, so this water is at 65 % of the limit. (below the EU limit)

Does the water in Maurecourt also meet the strictest limits in Europe?

No. The four most harmful PFAS add up to 37 ng/L. That is 9.3 times Sweden's legal limit of 4 ng/L, in force since 2026. Germany will set a similar one in 2028. The water still passes the current EU legal limit (100 ng/L for the total of 20 PFAS).

Are PFAS levels rising in Maurecourt's tap water?

No clear trend. Since 14 February 2025, 6 checks have been published; on the main network the PFAS-4 sum ranged between 8 ng/L and 39 ng/L (5 quantified values), at times below the detection limit. pfasnearme only reports a trend from a change of at least 25 % and 1 ng/L. These history statistics use laboratory-published sums only.

How hard is the water in Maurecourt?

The water hardness in Maurecourt is 8.6 °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 Maurecourt, so in principle the same water.

Conflans-Sainte-Honorine
PFAS-4: 8 ng/L
Andrésy
PFAS-4: 8 ng/L
Triel-sur-Seine
PFAS-4: 8 ng/L
Chanteloup-les-Vignes
PFAS-4: 8 ng/L

Nearby communes

The closest to Maurecourt on this site.

Jouy-le-Moutier
PFAS-4: 6 ng/L 2 km away
Neuville-sur-Oise
PFAS-4: below 4 ng/L 2 km away
Vauréal
PFAS-4: below 4 ng/L 4 km away
Boisemont
PFAS-4: below 4 ng/L 4 km away
Cergy
PFAS-4: below 4 ng/L 4 km away

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=78382
License
Licence Ouverte / Open Licence (Etalab)
Retrieved
21 September 2026
Supply networks
ANDRESY, MAURECOURT

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