Drinking water quality in Lillers
PFAS in drinking water
The total of 20 PFAS ("forever chemicals") was last measured at 0.002 µg/L. The EU limit is 0.1 µg/L, so this water is at 2 % of the limit. (30 March 2026)
The four most harmful PFAS add up to 0.001 µg/L, below the health limit of 0.004 µg/L used in Sweden since 2026.
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)
| Acide sulfonique de perfluorooctane (PFOS) | 0.001 µg/L |
| Acide perfluorobutanoïque (PFBA) | 0.001 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,005 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,001 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | <0,001 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,001 µg/L |
| Acide perfluorohexanoïque (PFHXA) | <0,002 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,001 µg/L |
| Acide perfluoropentanoïque (PFPEA) | <0,001 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,001 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,002 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,001 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,001 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,001 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,002 µg/L |
| Perfluorohexane sulfonate (PFHXS) | <0,001 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,001 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,001 µg/L |
| Acide perfluoro-octanoïque (PFOA) | <0,001 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,002 µg/L |
Water report for Lillers
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Official assessment
The latest official test failed at least one quality requirement.
„Eau d’alimentation non conforme aux limites de qualité en vigueur pour le paramètre nitrates. Il est demandé de remédier à la situation de non-conformité constatée. En attendant, cette eau est déconseillée aux populations sensibles (femmes enceintes, nourrissons) pour des usages alimentaires.“
Values to watch
These values are at least halfway to their legal limit, or over it.
| Parameter | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 52 mg/L | ≤ 50 mg/L | exceeded |
Show all 21 official measurements
| Parameter | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 52 mg/L | ≤ 50 mg/L | exceeded |
| Nitrite | <0,01 mg/L | ≤ 0.5 mg/L | within limit |
| Lead | <2 µg/L | ≤ 10 µg/L | within limit |
| Copper | <0,010 mg(Cu)/L | ≤ 2 mg(Cu)/L | within limit |
| Nickel | <5 µg/L | ≤ 20 µg/L | within limit |
| Arsenic | <2 µg/L | ≤ 10 µg/L | within limit |
| Cadmium | <1 µg/L | ≤ 5 µg/L | within limit |
| Chromium | <5 µg/L | ≤ 50 µg/L | within limit |
| Uranium | <10 µg/L | ≤ 30 µg/L | within limit |
| Fluoride | 0.14 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 | 7.6 unité pH | 6.5–9 unité pH | within limit |
| Water hardness | 37.25 °f | no limit | informational |
| Electrical conductivity | 865 µS/cm | 200–1,100 µS/cm | within limit |
| Chloride | 42.4 mg/L | ≤ 250 mg/L | within limit |
| Sulphate | 67 mg/L | ≤ 250 mg/L | within limit |
| Sodium | 30.8 mg/L | ≤ 200 mg/L | within limit |
| Iron | 20 µg/L | ≤ 200 µg/L | within limit |
| Turbidity | <0,1 NFU | ≤ 2 NFU | within limit |
Frequently asked questions
Is tap water in Lillers safe to drink?
The latest official test failed at least one quality requirement.
How high are PFAS levels in Lillers's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at 0.002 µg/L. The EU limit is 0.1 µg/L, so this water is at 2 % of the limit. (below the EU limit)
Does the water in Lillers also meet the strictest limits in Europe?
Yes. Even against Europe's strictest limit, the health limit of 0.004 µg/L used in Sweden since 2026, the measured value of 0.001 µg/L stays below.
How hard is the water in Lillers?
The water hardness in Lillers is 37.25 °f (hard). 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=62516
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 28 August 2026
- Supply networks
- S A C R A, LILLERS
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.