PFAS in Saint-Fargeau's tap water: under 4 ng/L, none of the four main PFAS detected

Last PFAS check: · Source: Hub'eau

PFAS in drinking water

None of the 4 most harmful PFAS detected

Amount found in the water < 4 ng/L the 4 most harmful PFAS (PFAS-4) · the lab's detection limit 20 PFAS looked for, 6 ng/L found in total
Our health benchmark 0.5 ng/L

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.

20 PFAS (see each substance)
PFAS substance Value
Acide perfluorohexanoïque (PFHXA) 0.003 µg/L
Acide perfluoropentanoïque (PFPEA) 0.002 µg/L
Acide sulfonique de perfluorobutane (PFBS) 0.001 µg/L
Acide perfluoroheptane sulfonique (PFHpS) <0,002 µg/L
Acide perfluoro-nonanoïque (PFNA) <0,001 µg/L
Acide sulfonique de perfluorooctane (PFOS) <0,001 µg/L
Acide perfluoro-octanoïque (PFOA) <0,001 µg/L
Acide perfluoro undecanoïque (PFUnA) <0,001 µg/L
Acide perfluoro undecane sulfonique (PFUnDS) <0,002 µg/L
Acide perfluoropentane sulfonique (PFPS) <0,001 µg/L
Acide perfluoro tridecanoique (PFTrDA) <0,001 µg/L
Acide perfluorododécanoique (PFDoDA) <0,001 µg/L
Perfluorohexane sulfonate (PFHXS) <0,001 µg/L
Acide perfluoro-decanoïque (PFDA) <0,001 µg/L
Acide perfluorododécane sulfonique (PFDoDS) <0,001 µg/L
Acide perfluorodecane sulfonique (PFDS) <0,001 µg/L
Acide perfluoro tridecane sulfonique (PFTrDS) <0,005 µg/L
Acide perfluoroheptanoïque (PFHPA) <0,001 µg/L
Acide perfluorononane sulfonique (PFNS) <0,002 µg/L
Acide perfluorobutanoïque (PFBA) <0,002 µg/L

None found. The lab sees nothing below 4 ng/L, so our 0.5 ng/L benchmark cannot be checked.

EU legal limit
6 ng/L sum of 20 PFAS, below the 100 ng/L limit
Last PFAS test
15 July 2026
Water supplier
FEDERATION EAUX PUISAYE-FORTERRE

In Saint-Fargeau, none of the 4 most closely watched PFAS (PFAS-4) was detected at the latest PFAS check on 15 July 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: 6 ng/L (0.006 µg/L), below the EU legal limit (100 ng/L). 4 checks since 26 August 2025, PFAS-4 always below the detection limit (4 ng/L). Source: Hub'eau, Qualité de l'eau potable (Ministère de la Santé / OFB / BRGM).

Details and sources
Water supplier: FEDERATION EAUX PUISAYE-FORTERRE Latest water check: 27 July 2026 Data updated on

PFAS over time in Saint-Fargeau

5 PFAS checks since 28 March 2025, from the published measurements. Samples from 2 communes on the same network: it's the same water, so each one applies to Saint-Fargeau. Samples come from 2 distribution networks. The trend refers to the network “DRACY”.

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

DatePFAS-4Sum of 20 PFASSampled atNetwork
< 4 ng/L6 ng/LSaint-FargeauST-FARGEAU
< 4 ng/L< 29 ng/LDracyDRACY, DRACY
< 4 ng/L< 29 ng/LDracyDRACY, DRACY
< 4 ng/L< 29 ng/LSaint-FargeauST-FARGEAU
< 4 ng/L · calculated< 100 ng/LDracyDRACY, DRACY

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

Values to watch

These results are close to their legal limit, or over it.

One routine sample was outside a limit: Lead 12 µg/L on 15 July 2026 (limit ≤ 10 µg/L). This is a single result, not an official verdict on the supply.

What was tested Value Limit Status
Lead 12 µg/L ≤ 10 µg/L over the limit
See all 21 test results
What was tested Value Limit Status
Nitrate 20.4 mg/L ≤ 50 mg/L within the limit
Nitrite <0,01 mg/L ≤ 0.5 mg/L within the limit
Lead 12 µg/L ≤ 10 µg/L over the limit
Copper 0.54 mg(Cu)/L ≤ 2 mg(Cu)/L within the limit
Nickel <5 µg/L ≤ 20 µg/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 0.07 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 7.83 unité pH 6.5–9 unité pH within the limit
Water hardness 27.96 °f no limit for reference
Electrical conductivity 589 µS/cm 200–1,100 µS/cm within the limit
Chloride 9.5 mg/L ≤ 250 mg/L within the limit
Sulphate 5.8 mg/L ≤ 250 mg/L within the limit
Sodium 4.7 mg/L ≤ 200 mg/L within the limit
Iron <10 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-Fargeau safe to drink?

Yes. At the check on 27 July 2026, the tap water in Saint-Fargeau was within every limit tested. One routine sample was outside a limit: Lead 12 µg/L on 15 July 2026 (limit ≤ 10 µg/L). This is a single result, not an official verdict on the supply. “Eau d'alimentation conforme aux limites de qualité et non conforme aux références de qualité du fait d'une température legèreemnt supérie ure à 25 °C.”

How high are PFAS levels in Saint-Fargeau's drinking water?

The total of 20 PFAS ("forever chemicals") was last measured at 6 ng/L. The EU limit is 100 ng/L, so this water is at 6 % of the limit. (below the EU limit)

Does the water in Saint-Fargeau 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 Saint-Fargeau's tap water?

Too few quantified checks to say (0 since 28 March 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-Fargeau?

The water hardness in Saint-Fargeau is 28 °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-Fargeau, so in principle the same water.

Nearby communes

The closest to Saint-Fargeau 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=89344
License
Licence Ouverte / Open Licence (Etalab)
Retrieved
21 September 2026
Supply networks
ST-FARGEAU, DRACY

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