Drinking water quality in Gonfreville-l'Orcher
PFAS in drinking water
The total of 20 PFAS ("forever chemicals") was last measured at 0.0053 µg/L. The EU limit is 0.1 µg/L, so this water is at 5 % of the limit. (29 April 2026)
The four most harmful PFAS add up to 0.0028 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) | 0.0028 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | 0.0025 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,001 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,0010 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,0010 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,001 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,0010 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,0010 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,0010 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,0020 µg/L |
| Perfluorohexane sulfonate (PFHXS) | <0,0010 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,005 µg/L |
| Acide perfluoropentanoïque (PFPEA) | <0,0010 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,0010 µg/L |
| Acide perfluoro-octanoïque (PFOA) | <0,0010 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,001 µg/L |
| Acide perfluorohexanoïque (PFHXA) | <0,001 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,0010 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | <0,0010 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,0010 µg/L |
Water report for Gonfreville-l'Orcher
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Official assessment
The authorities have not published an overall verdict for this water.
„Eau d'alimentation conforme, le jour du prélèvement, aux exigences de qualité pour l'ensemble des paramètres mesurés. Nota Bene : Les teneurs ne valent que pour le point d'utilisation où elles ont été mesurées. Compte tenu de l'influence du réseau de distribution d'eau (réseau intérieur et éventuellement branchement public) sur la dissolution des métaux, ces valeurs ne sont pas représentatives de la qualité de l'eau pour l'ensemble des consommateurs du réseau de distribution.“
Values to watch
These values are at least halfway to their legal limit, or over it.
| Parameter | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 36.6 mg/L | ≤ 50 mg/L | within limit |
Show all 20 official measurements
| Parameter | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 36.6 mg/L | ≤ 50 mg/L | within limit |
| Nitrite | <0,010 mg/L | ≤ 0.5 mg/L | within limit |
| Lead | 2 µg/L | ≤ 10 µg/L | within limit |
| Copper | 0.0561 mg(Cu)/L | ≤ 2 mg(Cu)/L | within limit |
| Nickel | 3.2 µg/L | ≤ 20 µg/L | within limit |
| Arsenic | <0,25 µg/L | ≤ 10 µg/L | within limit |
| Cadmium | <0,025 µg/L | ≤ 5 µg/L | within limit |
| Chromium | 0.78 µg/L | ≤ 50 µg/L | within limit |
| Fluoride | <0,10 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 | 26.2 °f | no limit | informational |
| Electrical conductivity | 656 µS/cm | 200–1,100 µS/cm | within limit |
| Chloride | 27.4 mg/L | ≤ 250 mg/L | within limit |
| Sulphate | 14.4 mg/L | ≤ 250 mg/L | within limit |
| Sodium | 14.6 mg/L | ≤ 200 mg/L | within limit |
| Iron | 13.3 µg/L | ≤ 200 µg/L | within limit |
| Turbidity | 0.35 NFU | ≤ 2 NFU | within limit |
Frequently asked questions
Is tap water in Gonfreville-l'Orcher safe to drink?
All the values shown here (29 June 2026) are within the legal limits, but the authorities have not published an overall verdict for this water.
How high are PFAS levels in Gonfreville-l'Orcher's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at 0.0053 µg/L. The EU limit is 0.1 µg/L, so this water is at 5 % of the limit. (below the EU limit)
Does the water in Gonfreville-l'Orcher 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 0.0028 µg/L stays below.
How hard is the water in Gonfreville-l'Orcher?
The water hardness in Gonfreville-l'Orcher is 26.2 °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 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=76305
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 28 August 2026
- Supply networks
- VALLEE DE ST LAURENT , LE HAVRE PONT VII ZI, GONFREVILLE GOURNAY, FONDANCE
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.