PFAS in Louppy-sur-Loison's tap water: 200 ng/L, 400x our 0.5 ng/L benchmark
Last PFAS check: · Source: Hub'eau
PFAS in drinking water
400× 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.
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 100% of the cities we track
checked on 8 June 2026
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide perfluorohexanoïque (PFHXA) | 1 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | 0.89 µg/L |
| Acide perfluoropentanoïque (PFPEA) | 0.64 µg/L |
| Acide perfluorobutanoïque (PFBA) | 0.3 µg/L |
| Acide perfluoro-octanoïque (PFOA) | 0.2 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | 0.007 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,002 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,002 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | <0,002 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,002 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,002 µg/L |
| Perfluorohexane sulfonate (PFHXS) | <0,002 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,002 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,002 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,005 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,002 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,002 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,002 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,002 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,002 µg/L |
Fails a current legal limit. Here are some filter options.
- EU legal limit
- 3,000 ng/L sum of 20 PFAS, above the 100 ng/L limit
- Last PFAS test
- 8 June 2026
- Water supplier
- MAIRIE DE LOUPPY-SUR-LOISON
In Louppy-sur-Loison, the 4 most closely watched PFAS (PFAS-4) add up to 200 ng/L (0.2 µg/L) at the latest PFAS check on 8 June 2026. That's 400 times our 0.5 ng/L health benchmark, and above Sweden's legal limit of 4 ng/L. Sum of 20 PFAS: 3,000 ng/L (3 µg/L), above the EU legal limit (100 ng/L). 16 checks since 18 April 2025: sum of 20 PFAS from 1,700 ng/L to 3,100 ng/L. Source: Hub'eau, Qualité de l'eau potable (Ministère de la Santé / OFB / BRGM).
Details and sources
PFAS over time in Louppy-sur-Loison
16 PFAS checks since 18 April 2025, from the published measurements.
“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 |
|---|---|---|
| 200 ng/L – < 206 ng/L · calculated | 3,000 ng/L | |
| 160 ng/L – < 166 ng/L · calculated | 2,700 ng/L | |
| 190 ng/L – < 196 ng/L · calculated | 2,600 ng/L | |
| 180 ng/L – < 186 ng/L · calculated | 3,100 ng/L | |
| 140 ng/L – < 146 ng/L · calculated | 2,200 ng/L | |
| 270 ng/L – < 276 ng/L · calculated | 2,800 ng/L | |
| 170 ng/L – < 176 ng/L · calculated | 1,700 ng/L | |
| 170 ng/L – < 176 ng/L · calculated | 2,600 ng/L | |
| 100 ng/L – < 106 ng/L · calculated | 2,400 ng/L | |
| 97 ng/L – < 103 ng/L · calculated | 2,300 ng/L | |
| 120 ng/L – < 126 ng/L · calculated | 2,600 ng/L | |
| 110 ng/L – < 116 ng/L · calculated | 2,800 ng/L |
Show the 4 earlier checks (back to 18 April 2025)
| 130 ng/L – < 136 ng/L · calculated | 2,300 ng/L | |
| 110 ng/L – < 116 ng/L · calculated | 2,500 ng/L | |
| 140 ng/L – < 146 ng/L · calculated | 1,900 ng/L | |
| 93 ng/L – < 99 ng/L · calculated | 2,000 ng/L |
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 over at least one limit.
Values to watch
These results are close to their legal limit, or over it.
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 42 mg/L | ≤ 50 mg/L | within the limit |
See all 17 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 42 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | <0,01 mg/L | ≤ 0.5 mg/L | within the limit |
| Arsenic | 0.04 µg/L | ≤ 10 µg/L | within the limit |
| Cadmium | <0,01 µg/L | ≤ 5 µg/L | within the limit |
| Chromium | <0,05 µg/L | ≤ 50 µg/L | within the limit |
| Fluoride | 0.04 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 | 7.4 unité pH | 6.5–9 unité pH | within the limit |
| Water hardness | 26.3 °f | no limit | for reference |
| Electrical conductivity | 490 µS/cm | 200–1,100 µS/cm | within the limit |
| Chloride | 6 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 20 mg/L | ≤ 250 mg/L | within the limit |
| Sodium | 2.7 mg/L | ≤ 200 mg/L | within the limit |
| Iron | 9 µg/L | ≤ 200 µg/L | within the limit |
| Turbidity | <0,1 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in Louppy-sur-Loison safe to drink?
At the latest check, the water was over at least one limit. “La somme des 20 PFAS est supérieure à la limite de qualité fixée à 0,1 µg/l. Un plan d'actions pour rétablir la qualité de l'eau a été demandé à la collectivité. Depuis le 05/07/2025, la consommation de l'eau est interdite par arrêté préfectoral à des fins de boisson et pour la préparation de biberons.”
How high are PFAS levels in Louppy-sur-Loison's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at 3,000 ng/L. The EU limit is 100 ng/L, so this water is at 3,000 % of the limit. (above the EU limit)
Does the water in Louppy-sur-Loison also meet the strictest limits in Europe?
No. The four most harmful PFAS add up to 200 ng/L. That is 50 times Sweden's legal limit of 4 ng/L, in force since 2026. Germany will set a similar one in 2028. The sum of 20 PFAS is 3,000 ng/L, above the EU legal limit of 100 ng/L.
Are PFAS levels rising in Louppy-sur-Loison's tap water?
Calculated PFAS-4 values are listed in the table. The chart uses laboratory-published sum-of-20 results; there are too few laboratory-published PFAS-4 sums for the existing trend calculation.
How hard is the water in Louppy-sur-Loison?
The water hardness in Louppy-sur-Loison is 26.3 °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.
Nearby communes
The closest to Louppy-sur-Loison 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=55306
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 21 September 2026
- Supply networks
- LOUPPY SUR LOISON
Water report for Louppy-sur-Loison
Get new PFAS results for Louppy-sur-Loison, 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.