pfasnearmeDrinking water quality from official sources

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

Last PFAS check: · Source: Hub'eau

Fails the current legal limits

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, 125 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.

How we chose 0.5 ng/L

More about this result
Legal limit in Sweden (since 2026) within the limit
below this limit < 4 ng/L · Limit: 4 ng/L
Limit in Denmark (since 2021) no verdict
finer than the lab's detection limit < 4 ng/L · Limit: 2 ng/L
Limit in Germany (from 2028) within the limit
below this limit < 4 ng/L · Limit: 20 ng/L

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.

EU legal limit over the limit
125 % of the EU limit 0.125 µg/L · Limit: 0.1 µg/L

checked on 24 July 2026

20 PFAS (see each substance)
PFAS substance Value
Acide perfluorohexanoïque (PFHXA) 0.081 µg/L
Acide perfluoropentanoïque (PFPEA) 0.031 µg/L
Acide perfluorobutanoïque (PFBA) 0.009 µg/L
Acide perfluoroheptanoïque (PFHPA) 0.004 µg/L
Acide perfluoro tridecanoique (PFTrDA) <0,001 µg/L
Acide perfluoro undecane sulfonique (PFUnDS) <0,002 µg/L
Acide perfluorodecane sulfonique (PFDS) <0,001 µg/L
Acide sulfonique de perfluorobutane (PFBS) <0,001 µg/L
Acide perfluoro undecanoïque (PFUnA) <0,001 µg/L
Acide perfluorododécane sulfonique (PFDoDS) <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-decanoïque (PFDA) <0,001 µg/L
Acide perfluoro-octanoïque (PFOA) <0,001 µg/L
Acide perfluoro tridecane sulfonique (PFTrDS) <0,005 µg/L
Perfluorohexane sulfonate (PFHXS) <0,001 µg/L
Acide sulfonique de perfluorooctane (PFOS) <0,001 µg/L
Acide perfluoroheptane sulfonique (PFHpS) <0,002 µg/L
Acide perfluoropentane sulfonique (PFPS) <0,001 µg/L

Fails a current legal limit. The details are below.

EU legal limit
125 ng/L sum of 20 PFAS, above the 100 ng/L limit
Last PFAS test
24 July 2026
Water supplier
SAUR ANNONAY

In Mariac, none of the 4 most closely watched PFAS (PFAS-4) was detected at the latest PFAS check on 24 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: 125 ng/L (0.125 µg/L), above the EU legal limit (100 ng/L). 22 checks since 6 October 2025: PFAS-4 up to 29 ng/L, sometimes below the detection limit, averaging at least 2.58 ng/L over 12 months (non-detects as 0). No clear trend. Source: Hub'eau, Qualité de l'eau potable (Ministère de la Santé / OFB / BRGM).

Details and sources
Water supplier: SAUR ANNONAY Latest water check: 24 July 2026 Data updated on

PFAS over time in Mariac

27 PFAS checks since 28 May 2025, from the published measurements. Samples come from 5 distribution networks. The trend refers to the network “MARIAC TRAPAYAC”.

“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/L29 ng/L06 October 202524 July 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 PFASNetwork
< 4 ng/L125 ng/LMARIAC TRAPAYAC
< 4 ng/L209 ng/LMARIAC TRAPAYAC
< 4 ng/L200 ng/LMARIAC TRAPAYAC
5 ng/L483 ng/LMARIAC TRAPAYAC
< 4 ng/L162 ng/LMARIAC TRAPAYAC
5 ng/L374 ng/LMARIAC TRAPAYAC
3 ng/L135 ng/LMARIAC TRAPAYAC
< 4 ng/L84 ng/LMARIAC TRAPAYAC
< 4 ng/L83 ng/LMARIAC TRAPAYAC
< 4 ng/L82 ng/LMARIAC TRAPAYAC
< 4 ng/L< 29 ng/LMARIAC RIBEFAITE
< 4 ng/L136 ng/LMARIAC TRAPAYAC
Show the 15 earlier checks (back to 28 May 2025)
< 4 ng/L< 29 ng/LMARIAC CHADENAC
2 ng/L212 ng/LMARIAC TRAPAYAC
2 ng/L362 ng/LMARIAC TRAPAYAC
< 4 ng/L91 ng/LMARIAC TRAPAYAC
< 4 ng/L220 ng/LMARIAC TRAPAYAC
< 4 ng/L174 ng/LMARIAC TRAPAYAC
2 ng/L304 ng/LMARIAC TRAPAYAC
29 ng/L1,207 ng/LMARIAC TRAPAYAC
< 4 ng/L< 29 ng/LMARIAC VILLAGE
1 ng/L161 ng/LMARIAC TRAPAYAC
< 4 ng/L · calculated< 100 ng/LMARIAC RIBEFAITE
< 4 ng/L · calculated4 ng/LMARIAC CHADENAC
< 4 ng/L · calculated< 100 ng/LMARIAC GIROND
< 4 ng/L · calculated2 ng/LMARIAC VILLAGE
< 4 ng/L · calculated43 ng/LMARIAC TRAPAYAC

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.

Outside a reference value: Electrical conductivity 74 µS/cm on 24 July 2026 (reference 200–1,100 µS/cm). These are indicator parameters with reference values, not legal limits.

What was tested Value Limit Status
Electrical conductivity 74 µS/cm 200–1,100 µS/cm below the reference value
See all 18 test results
What was tested Value Limit Status
Nitrate 1.2 mg/L ≤ 50 mg/L within the limit
Nitrite <0,01 mg/L ≤ 0.5 mg/L within the limit
Arsenic 0.23 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 0.05 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 unité pH 6.5–9 unité pH within the limit
Water hardness 1.32 °f no limit for reference
Electrical conductivity 74 µS/cm 200–1,100 µS/cm below the reference value
Chloride 1.3 mg/L ≤ 250 mg/L within the limit
Sulphate 2.8 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 <0,1 NFU ≤ 2 NFU within the limit

Frequently asked questions

Is tap water in Mariac safe to drink?

At the latest check, the water was over at least one limit. “Eau d'alimentation conforme aux limites de qualité et non conforme aux références de qualité.”

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

The total of 20 PFAS ("forever chemicals") was last measured at 125 ng/L. The EU limit is 100 ng/L, so this water is at 125 % of the limit. (above the EU limit)

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

No. The sum of 20 PFAS is 125 ng/L, above the EU legal limit of 100 ng/L. The four most harmful PFAS add up to < 4 ng/L, which stays below Sweden's legal limit of 4 ng/L, in force since 2026.

Are PFAS levels rising in Mariac's tap water?

No clear trend. Since 28 May 2025, 22 checks have been published; on the main network the PFAS-4 sum ranged between 1 ng/L and 29 ng/L (8 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 Mariac?

The water hardness in Mariac is 1.3 °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.

Nearby communes

The closest to Mariac on this site.

Arcens
PFAS-4: below 4 ng/L 3 km away
Accons
PFAS-4: below 4 ng/L 3 km away
Dornas
PFAS-4: below 4 ng/L 4 km away
Jaunac
PFAS-4: below 4 ng/L 5 km away
Saint-Martin-de-Valamas
PFAS-4: below 4 ng/L 6 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=07150
License
Licence Ouverte / Open Licence (Etalab)
Retrieved
21 September 2026
Supply networks
MARIAC VILLAGE, MARIAC GIROND, MARIAC RIBEFAITE, MARIAC CHADENAC, MARIAC TRAPAYAC

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