PFAS in Saint-Cyr-sur-Morin's tap water: 2 ng/L, 4x our 0.5 ng/L benchmark
Last PFAS check: · Source: Hub'eau
PFAS in drinking water
4× above our health benchmark
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 Saâcy-sur-Marne, on the same distribution network as Saint-Cyr-sur-Morin (SAACY SUR MARNE - S2E 77). 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.
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 85% of the cities we track
checked on 9 April 2026
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide sulfonique de perfluorobutane (PFBS) | 0.001 µg/L |
| Perfluorohexane sulfonate (PFHXS) | 0.001 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | 0.001 µg/L |
| Acide perfluoro-octanoïque (PFOA) | <0,001 µg/L |
| Acide perfluorohexanoïque (PFHXA) | <0,002 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,002 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,005 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,001 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,001 µg/L |
| Acide perfluoropentanoïque (PFPEA) | <0,001 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,001 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,001 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,001 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,002 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,002 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | <0,001 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,002 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,001 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,001 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,001 µg/L |
Above our health benchmark. Here are some filter options.
- EU legal limit
- 3 ng/L sum of 20 PFAS, below the 100 ng/L limit
- Last PFAS test
- 9 April 2026
- Water supplier
- SYNDICAT NORD EST
In Saint-Cyr-sur-Morin, the 4 most closely watched PFAS (PFAS-4) add up to 2 ng/L (0.002 µg/L) at the latest PFAS check on 9 April 2026. That's 4 times our 0.5 ng/L health benchmark, but below Sweden's legal limit of 4 ng/L. Sum of 20 PFAS: 3 ng/L (0.003 µg/L), below the EU legal limit (100 ng/L). Sampled in Saâcy-sur-Marne, on the same network. 4 checks since 13 January 2026: PFAS-4 up to 2 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 Saint-Cyr-sur-Morin
7 PFAS checks since 8 August 2025, from the published measurements. Samples from 4 communes on the same network: it's the same water, so each one applies to Saint-Cyr-sur-Morin. Samples come from 4 distribution networks. The trend refers to the network “SAINT DENIS LES REBAIS - SE2 77”.
“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 |
|---|---|---|---|---|
| 2 ng/L | 3 ng/L | Saâcy-sur-Marne | SAACY SUR MARNE - S2E 77 | |
| < 4 ng/L | < 29 ng/L | Hondevilliers | SABLONNIERES - S2E 77, SAINT DENIS LES REBAIS - SE2 77 | |
| < 4 ng/L | < 29 ng/L | Doue | SAINT DENIS LES REBAIS - SE2 77 | |
| < 4 ng/L | < 29 ng/L | Saint-Cyr-sur-Morin | SAINT CYR SUR MORIN - SE2 77 | |
| < 4 ng/L · calculated | < 29 ng/L | Hondevilliers | SABLONNIERES - S2E 77, SAINT DENIS LES REBAIS - SE2 77 | |
| < 4 ng/L · calculated | < 29 ng/L | Saint-Cyr-sur-Morin | SAINT CYR SUR MORIN - SE2 77 | |
| 4 ng/L – < 6 ng/L · calculated | 4 ng/L | Saâcy-sur-Marne | SAACY SUR MARNE - S2E 77 |
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
The authorities have not published an overall verdict for this water.
See all 18 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 22.7 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | <0,01 mg/L | ≤ 0.5 mg/L | within the limit |
| Arsenic | <2 µg/L | ≤ 10 µg/L | within the limit |
| Cadmium | <1 µg/L | ≤ 5 µg/L | within the limit |
| Chromium | <5 µg/L | ≤ 50 µg/L | within the limit |
| Uranium | <10 µg/L | ≤ 30 µg/L | within the limit |
| Fluoride | 0.73 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 | 7.3 unité pH | 6.5–9 unité pH | within the limit |
| Water hardness | 24.22 °f | no limit | for reference |
| Electrical conductivity | 590 µS/cm | 200–1,100 µS/cm | within the limit |
| Chloride | 22 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 52 mg/L | ≤ 250 mg/L | within the limit |
| Sodium | 9.9 mg/L | ≤ 200 mg/L | within the limit |
| Iron | 23 µg/L | ≤ 200 µg/L | within the limit |
| Turbidity | 0.11 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in Saint-Cyr-sur-Morin safe to drink?
All the values shown here (10 July 2026) are within the legal limits, but the authorities have not published an overall verdict for this water. “Eau d’alimentation présentant un dépassement de la valeur indicative pour le paramètre chlorothalonil R471811 (métabolite non pertinent) n’entrainant pas de mesure de restriction d’usage. Un suivi renforcé est mis en place pour surveiller l’évolution de la situation. La personne responsable de la distribution de l’eau doit engager un programme d’actions visant à réduire les teneurs du paramètre concerné. Les autres paramètres recherchés dans le cadre du contrôle sanitaire sont conformes aux exigences du code de la santé publique.”
How high are PFAS levels in Saint-Cyr-sur-Morin's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at 3 ng/L. The EU limit is 100 ng/L, so this water is at 3 % of the limit. (below the EU limit)
Does the water in Saint-Cyr-sur-Morin also meet the strictest limits in Europe?
Yes. Even against Europe's strictest legal limit, Sweden's 4 ng/L in force since 2026, the measured value of 2 ng/L stays below.
Are PFAS levels rising in Saint-Cyr-sur-Morin's tap water?
Too few quantified checks to say (0 since 8 August 2025). pfasnearme adds each new publication weekly; a trend needs at least three quantified values. These history statistics use laboratory-published sums only.
How hard is the water in Saint-Cyr-sur-Morin?
The water hardness in Saint-Cyr-sur-Morin is 24.2 °f (medium). 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 Saint-Cyr-sur-Morin, so in principle the same water.
Nearby communes
The closest to Saint-Cyr-sur-Morin 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=77405
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 21 September 2026
- Supply networks
- SABLONNIERES - S2E 77, SAACY SUR MARNE - S2E 77, SAINT DENIS LES REBAIS - SE2 77, SAINT CYR SUR MORIN - SE2 77
Water report for Saint-Cyr-sur-Morin
Get new PFAS results for Saint-Cyr-sur-Morin, with a short explanation. At most one update a week, only when there's something new.
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.