PFAS in Cour-sur-Loire's tap water: under 10 ng/L, none of the four main PFAS detected
Last PFAS check: · Source: Hub'eau
PFAS in drinking water
No PFAS detected
The lab sees nothing below 10 ng/L, 20 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.
Sample taken in Menars, on the same distribution network as Cour-sur-Loire (MENARS_COUR/LOIRE). 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.
The lab detects each of the four substances from 2 to 4 ng/L upward. None reached that limit, so their total is below 10 ng/L rather than zero.
checked on 29 January 2025
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,004 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,004 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,002 µg/L |
| Perfluorohexane sulfonate (PFHXS) | <0,002 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,002 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,002 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,002 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,004 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | <0,004 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,004 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,002 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,010 µg/L |
| Acide perfluorohexanoïque (PFHXA) | <0,010 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,002 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,002 µg/L |
| Acide perfluoro-octanoïque (PFOA) | <0,002 µg/L |
| Acide perfluoropentanoïque (PFPEA) | <0,010 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,020 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,002 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | <0,002 µg/L |
None found. The lab sees nothing below 10 ng/L, so our 0.5 ng/L benchmark cannot be checked.
Water report for Cour-sur-Loire
Get new PFAS results for Cour-sur-Loire, with a short explanation. At most one update a week, only when there's something new.
- EU legal limit
- none detected sum of 20 PFAS below the detection limit, limit 100 ng/L
- Last PFAS test
- 29 January 2025
- Water supplier
- VEOLIA EAU - C.G.E (SITE DE BLOIS)
In Cour-sur-Loire, none of the 4 most closely watched PFAS (PFAS-4) was detected at the latest PFAS check on 29 January 2025. The total is below 10 ng/L, the sum of the detection limits and 20 times our 0.5 ng/L benchmark. Sum of 20 PFAS: <SEUIL µg/L, below the EU legal limit (100 ng/L). Sampled in Menars, on the same network. Source: Hub'eau, Qualité de l'eau potable (Ministère de la Santé / OFB / BRGM).
Details and sources
PFAS over time in Cour-sur-Loire
A single PFAS check has been published for Cour-sur-Loire so far (29 January 2025). A history will build up with the next checks; this page is refreshed weekly.
What the latest check found
At the latest check, the water was within every limit tested.
Values to watch
These results are close to their legal limit, or over it.
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Arsenic | 9.6 µg/L | ≤ 10 µg/L | within the limit |
See all 18 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 0.23 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | <0,010 mg/L | ≤ 0.5 mg/L | within the limit |
| Lead | 3 µg/L | ≤ 10 µg/L | within the limit |
| Copper | 0.026 mg(Cu)/L | ≤ 2 mg(Cu)/L | within the limit |
| Nickel | <5 µg/L | ≤ 20 µg/L | within the limit |
| Arsenic | 9.6 µg/L | ≤ 10 µg/L | within the limit |
| Cadmium | <0,010 µg/L | ≤ 5 µg/L | within the limit |
| Chromium | 0.5 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 | 7.9 unité pH | 6.5–9 unité pH | within the limit |
| Water hardness | 25.1 °f | no limit | for reference |
| Electrical conductivity | 527 µS/cm | 200–1,100 µS/cm | within the limit |
| Chloride | 10 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 22.9 mg/L | ≤ 250 mg/L | within the limit |
| Iron | 3 µg/L | ≤ 200 µg/L | within the limit |
| Turbidity | <0,30 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in Cour-sur-Loire safe to drink?
Yes. At the check on 28 May 2026, the tap water in Cour-sur-Loire was within every limit tested. “Eau d'alimentation conforme aux exigences de qualité en vigueur pour l'ensemble des paramètres mesurés. À noter la présence d’arsenic à une concentration proche de la limite de qualité fixée à 10 µg/l.”
How high are PFAS levels in Cour-sur-Loire's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at –. The EU limit is 100 ng/L, so this water is at – of the limit. (below the EU limit)
Does the water in Cour-sur-Loire also meet the strictest limits in Europe?
The check cannot say. None of the four compounds was quantified, but the laboratory's detection limits add up to 10 ng/L, above Sweden's legal limit of 4 ng/L in force since 2026, so a value between the two would go unnoticed.
How hard is the water in Cour-sur-Loire?
The water hardness in Cour-sur-Loire is 25.1 °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 Cour-sur-Loire, so in principle the same water.
Nearby communes
The closest to Cour-sur-Loire 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=41069
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 21 September 2026
- Supply networks
- MENARS_COUR/LOIRE
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.