Drinking water quality in Longny les Villages
PFAS in drinking water
The total of 20 PFAS ("forever chemicals") was last measured at 0.0106 µg/L. The EU limit is 0.1 µg/L, so this water is at 11 % of the limit. (18 May 2026)
The four most harmful PFAS add up to 0.0079 µg/L. That is 2 times the health limit of 0.004 µg/L that Sweden made law in 2026. Germany will set a similar limit in 2028.
One of these four, PFOA, is classified as causing cancer in humans by the WHO's cancer research agency (IARC).
Substances too small to measure count as 0, so the real total may be higher.
20 PFAS (see each substance)
| Perfluorohexane sulfonate (PFHXS) | 0.0079 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | 0.0015 µg/L |
| Acide perfluorohexanoïque (PFHXA) | 0.0012 µg/L |
| Acide perfluoropentanoïque (PFPEA) | <0,001 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,0010 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | <0,0010 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,001 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,0010 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,0010 µg/L |
| Acide perfluoro-octanoïque (PFOA) | <0,0010 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | <0,0010 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,0010 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,001 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,005 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,001 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,0020 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,0020 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,001 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,0010 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,0010 µg/L |
Water report for Longny les Villages
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Official assessment
The latest official test passed all quality requirements.
„Eau d'alimentation conforme aux exigences de qualité en vigueur pour l'ensemble des paramètres mesurés.“
Show all 18 official measurements
| Parameter | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 18 mg/L | ≤ 50 mg/L | within limit |
| Nitrite | <0,010 mg/L | ≤ 0.5 mg/L | within limit |
| Arsenic | 2.2 µg/L | ≤ 10 µg/L | within limit |
| Cadmium | <0,025 µg/L | ≤ 5 µg/L | within limit |
| Chromium | <1,0 µg/L | ≤ 50 µg/L | within limit |
| Uranium | <0,10 µg/L | ≤ 30 µg/L | within limit |
| Fluoride | 0.085 mg/L | ≤ 1.5 mg/L | within limit |
| Escherichia coli | <1 n/(100mL) | ≤ 0 mL) | within limit |
| Enterococci | <1 n/(100mL) | ≤ 0 mL) | within limit |
| Coliform bacteria | <1 n/(100mL) | ≤ 0 mL) | within limit |
| pH | 7.7 unité pH | 6.5–9 unité pH | within limit |
| Water hardness | 24.6 °f | no limit | informational |
| Electrical conductivity | 498 µS/cm | 200–1,100 µS/cm | within limit |
| Chloride | 16 mg/L | ≤ 250 mg/L | within limit |
| Sulphate | 23 mg/L | ≤ 250 mg/L | within limit |
| Sodium | 5.2 mg/L | ≤ 200 mg/L | within limit |
| Iron | 1.1 µg/L | ≤ 200 µg/L | within limit |
| Turbidity | <0,20 NFU | ≤ 2 NFU | within limit |
Frequently asked questions
Is tap water in Longny les Villages safe to drink?
Yes. The latest official test (15 June 2026) checked the tap water in Longny les Villages and it passed every requirement.
How high are PFAS levels in Longny les Villages's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at 0.0106 µg/L. The EU limit is 0.1 µg/L, so this water is at 11 % of the limit. (below the EU limit)
Does the water in Longny les Villages also meet the strictest limits in Europe?
No. The four most harmful PFAS add up to 0.0079 µg/L. That is 2 times the health limit of 0.004 µg/L that Sweden made law in 2026. The water still passes the current EU limit (0.1 µg/L for the total of 20 PFAS).
How hard is the water in Longny les Villages?
The water hardness in Longny les Villages is 24.6 °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 28 August 2026.
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=61230
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 28 August 2026
- Supply networks
- PAS ST L'HOMER REPESSERIE, MARCHAINVILLE, COUR MAUGIS SUR HUISNE (PERRINES), LONGNY LES VILLAGES SIAEP
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.