pfasnearmeDrinking water quality from official sources

PFAS in the tap water of Ternay (Rhône): 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, 19 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 within the limit
19 % of the EU limit 0.019 µg/L · Limit: 0.1 µg/L

checked on 10 July 2026

20 PFAS (see each substance)
PFAS substance Value
Acide perfluorobutanoïque (PFBA) 0.009 µg/L
Acide perfluoropentanoïque (PFPEA) 0.006 µg/L
Acide perfluorohexanoïque (PFHXA) 0.004 µg/L
Acide sulfonique de perfluorobutane (PFBS) <0,001 µg/L
Acide perfluoroheptanoïque (PFHPA) <0,001 µg/L
Acide perfluoropentane sulfonique (PFPS) <0,001 µg/L
Acide perfluoro undecane sulfonique (PFUnDS) <0,002 µg/L
Acide perfluoro-decanoïque (PFDA) <0,001 µg/L
Acide sulfonique de perfluorooctane (PFOS) <0,001 µg/L
Perfluorohexane sulfonate (PFHXS) <0,001 µg/L
Acide perfluorododécane sulfonique (PFDoDS) <0,001 µg/L
Acide perfluorodecane sulfonique (PFDS) <0,001 µg/L
Acide perfluoro-octanoïque (PFOA) <0,001 µg/L
Acide perfluoro undecanoïque (PFUnA) <0,001 µg/L
Acide perfluoroheptane sulfonique (PFHpS) <0,002 µg/L
Acide perfluorononane sulfonique (PFNS) <0,002 µg/L
Acide perfluorododécanoique (PFDoDA) <0,001 µg/L
Acide perfluoro tridecane sulfonique (PFTrDS) <0,005 µg/L
Acide perfluoro-nonanoïque (PFNA) <0,001 µg/L
Acide perfluoro tridecanoique (PFTrDA) <0,001 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
19 ng/L sum of 20 PFAS, below the 100 ng/L limit
Last PFAS test
10 July 2026
Water supplier
SUEZ LYONNAISE DES EAUX 69

In Ternay, none of the 4 most closely watched PFAS (PFAS-4) was detected at the latest PFAS check on 10 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: 19 ng/L (0.019 µg/L), below the EU legal limit (100 ng/L). 16 checks since 17 October 2025: PFAS-4 up to 30 ng/L, sometimes below the detection limit, averaging at least 5.62 ng/L over 12 months (non-detects as 0). Falling on the main network. Source: Hub'eau, Qualité de l'eau potable (Ministère de la Santé / OFB / BRGM).

Details and sources
Water supplier: SUEZ LYONNAISE DES EAUX 69 Latest water check: 10 July 2026 Data updated on

PFAS over time in Ternay

61 PFAS checks since 3 February 2023, from the published measurements. Samples from 5 communes on the same network: it's the same water, so each one applies to Ternay. Samples come from 2 distribution networks. The trend refers to the network “COMMUNAY ET REGION”.

“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/L30 ng/L017 October 202510 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 PFASSampled atNetwork
< 4 ng/L19 ng/LTernayCOMMUNAY ET REGION
< 4 ng/L9 ng/LCommunayCOMMUNAY ET REGION
< 4 ng/L8 ng/LTernayCOMMUNAY ET REGION
< 4 ng/L6 ng/LTernayCOMMUNAY ET REGION
< 4 ng/L5 ng/LSérézin-du-RhôneCOMMUNAY ET REGION
< 4 ng/L1 ng/LTernayCOMMUNAY ET REGION
< 4 ng/L< 29 ng/LSimandresCOMMUNAY ET REGION
< 4 ng/L6 ng/LTernayCOMMUNAY ET REGION
3 ng/L16 ng/LTernayCOMMUNAY ET REGION
7 ng/L35 ng/LTernay038001203
7 ng/L35 ng/LTernayCOMMUNAY ET REGION
13 ng/L85 ng/LTernay038001203
Show the 49 earlier checks (back to 3 February 2023)
13 ng/L85 ng/LTernayCOMMUNAY ET REGION
20 ng/L73 ng/LSérézin-du-RhôneCOMMUNAY ET REGION
30 ng/L136 ng/LTernay038001203
30 ng/L136 ng/LTernayCOMMUNAY ET REGION
37 ng/L · calculated182 ng/LSaint-Symphorien-d'OzonCOMMUNAY ET REGION
32 ng/L · calculated190 ng/LTernay038001203
32 ng/L · calculated190 ng/LTernayCOMMUNAY ET REGION
30 ng/L · calculated155 ng/LTernayCOMMUNAY ET REGION
34 ng/L · calculated156 ng/LTernay038001203
34 ng/L · calculated156 ng/LTernayCOMMUNAY ET REGION
30 ng/L · calculated144 ng/LSimandresCOMMUNAY ET REGION
29 ng/L · calculated126 ng/LTernay038001203
29 ng/L · calculated126 ng/LTernayCOMMUNAY ET REGION
30 ng/L · calculated153 ng/LSérézin-du-RhôneCOMMUNAY ET REGION
33 ng/L · calculated149 ng/LTernay038001203
33 ng/L · calculated149 ng/LTernayCOMMUNAY ET REGION
34 ng/L · calculated160 ng/LCommunayCOMMUNAY ET REGION
28 ng/L · calculated161 ng/LTernay038001203
28 ng/L · calculated161 ng/LTernayCOMMUNAY ET REGION
23 ng/L · calculated108 ng/LSérézin-du-RhôneCOMMUNAY ET REGION
26 ng/L · calculated123 ng/LTernay038001203
26 ng/L · calculated123 ng/LTernayCOMMUNAY ET REGION
27 ng/L · calculated105 ng/LSaint-Symphorien-d'OzonCOMMUNAY ET REGION
25 ng/L · calculated115 ng/LTernay038001203
25 ng/L · calculated115 ng/LTernayCOMMUNAY ET REGION
29 ng/L · calculated96 ng/LTernayCOMMUNAY ET REGION
30.6 ng/L · calculated85.3 ng/LTernay038001203
30.6 ng/L · calculated85.3 ng/LTernayCOMMUNAY ET REGION
26.7 ng/L · calculated100.1 ng/LSimandresCOMMUNAY ET REGION
24 ng/L · calculated81.6 ng/LTernay038001203
24 ng/L · calculated81.6 ng/LTernayCOMMUNAY ET REGION
55.1 ng/L · calculated198.7 ng/LSérézin-du-RhôneCOMMUNAY ET REGION
35.5 ng/L · calculated135 ng/LTernay038001203
35.5 ng/L · calculated135 ng/LTernayCOMMUNAY ET REGION
38.2 ng/L · calculated123.6 ng/LCommunayCOMMUNAY ET REGION
25.5 ng/L · calculated91.8 ng/LTernay038001203
28.8 ng/L · calculated91.6 ng/LTernayCOMMUNAY ET REGION
25.5 ng/L · calculated91.8 ng/LTernayCOMMUNAY ET REGION
37.2 ng/L · calculated169 ng/LTernay038001203
35 ng/L · calculated163.1 ng/LSaint-Symphorien-d'OzonCOMMUNAY ET REGION
37.2 ng/L · calculated169 ng/LTernayCOMMUNAY ET REGION
13 ng/L – < 14 ng/L · calculated65.9 ng/LTernay038001203
13 ng/L – < 14 ng/L · calculated65.9 ng/LTernayCOMMUNAY ET REGION
33.3 ng/L · calculated139.2 ng/LSimandresCOMMUNAY ET REGION
25.4 ng/L – < 30.4 ng/L · calculated141.1 ng/LTernay038001203
25.4 ng/L – < 30.4 ng/L · calculated141.1 ng/LTernayCOMMUNAY ET REGION
28.8 ng/L – < 33.8 ng/L · calculated137.8 ng/LSérézin-du-RhôneCOMMUNAY ET REGION
24.7 ng/L – < 29.7 ng/L · calculated112.5 ng/LTernay038001203
24.7 ng/L – < 29.7 ng/L · calculated112.5 ng/LTernayCOMMUNAY ET REGION

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 21 test results
What was tested Value Limit Status
Nitrate 11.6 mg/L ≤ 50 mg/L within the limit
Nitrite <0,01 mg/L ≤ 0.5 mg/L within the limit
Lead <2 µg/L ≤ 10 µg/L within the limit
Copper 0.035 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 N.M. µg/L ≤ 6 µg/L no verdict
Uranium <10 µg/L ≤ 30 µg/L within the limit
Fluoride 0.12 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 7.26 unité pH 6.5–9.5 pH within the limit
Water hardness 27.21 °f no limit for reference
Electrical conductivity 562 µS/cm 200–1,100 µS/cm within the limit
Chloride 24.5 mg/L ≤ 250 mg/L within the limit
Sulphate 44.6 mg/L ≤ 250 mg/L within the limit
Sodium 19.7 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 Ternay safe to drink?

Yes. At the check on 10 July 2026, the tap water in Ternay 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 Ternay's drinking water?

The total of 20 PFAS ("forever chemicals") was last measured at 19 ng/L. The EU limit is 100 ng/L, so this water is at 19 % of the limit. (below the EU limit)

Does the water in Ternay 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 Ternay's tap water?

No, they are falling. On the main network, the PFAS-4 sum went from 30 ng/L (17 October 2025) to 3 ng/L (16 January 2026) across 5 quantified checks. These history statistics use laboratory-published sums only.

How hard is the water in Ternay?

The water hardness in Ternay is 27.2 °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 Ternay, so in principle the same water.

Saint-Symphorien-d'Ozon
PFAS-4: below 4 ng/L
Communay
PFAS-4: below 4 ng/L
Sérézin-du-Rhône
PFAS-4: below 4 ng/L
Simandres
PFAS-4: below 4 ng/L

Nearby communes

The closest to Ternay on this site.

Grigny-sur-Rhône
PFAS-4: below 4 ng/L 1 km away
Millery
PFAS-4: 13 ng/L 3 km away
Chasse-sur-Rhône
PFAS-4: below 4 ng/L 3 km away
Vernaison
PFAS-4: 10 ng/L 4 km away
Givors
PFAS-4: below 4 ng/L 5 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=69297
License
Licence Ouverte / Open Licence (Etalab)
Retrieved
21 September 2026
Supply networks
COMMUNAY ET REGION

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