PFAS in Saint-Laurent-en-Caux's tap water: under 4 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 4 ng/L, 8 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.
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 1 ng/L upward. None reached that limit, so their total is below 4 ng/L rather than zero.
checked on 22 April 2026
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide perfluoro-nonanoïque (PFNA) | <0,0010 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | <0,0010 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,001 µg/L |
| Perfluorohexane sulfonate (PFHXS) | <0,0010 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,0010 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,0010 µg/L |
| Acide perfluoropentanoïque (PFPEA) | <0,0010 µg/L |
| Acide perfluorohexanoïque (PFHXA) | <0,0010 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,002 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,0020 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,0010 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,0010 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,005 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,0010 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,001 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | <0,0010 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,0010 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,0010 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,0010 µg/L |
| Acide perfluoro-octanoïque (PFOA) | <0,0010 µg/L |
None found. The lab sees nothing below 4 ng/L, so our 0.5 ng/L benchmark cannot be checked.
Water report for Saint-Laurent-en-Caux
Get new PFAS results for Saint-Laurent-en-Caux, 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
- 22 April 2026
- Water supplier
- VEOLIA YERVILLE
In Saint-Laurent-en-Caux, none of the 4 most closely watched PFAS (PFAS-4) was detected at the latest PFAS check on 22 April 2026. The total is below 4 ng/L, the sum of the detection limits and 8 times our 0.5 ng/L benchmark. Sum of 20 PFAS: <SEUIL µg/L, below the EU legal limit (100 ng/L). 5 checks since 10 February 2025: sum of 20 PFAS up to 17.9 ng/L, sometimes below the detection limit. Source: Hub'eau, Qualité de l'eau potable (Ministère de la Santé / OFB / BRGM).
Details and sources
PFAS over time in Saint-Laurent-en-Caux
5 PFAS checks since 10 February 2025, from the published measurements. Samples from 3 communes on the same network: it's the same water, so each one applies to Saint-Laurent-en-Caux. Samples come from 2 distribution networks. The trend refers to the network “ST PIERRE DE BENOUVILLE”.
“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 | Sampled at | Network |
|---|---|---|---|---|
| < 4 ng/L · calculated | < detection limit | Saint-Laurent-en-Caux | ST LAURENT EN CAUX | |
| 7.4 ng/L – < 8.4 ng/L · calculated | 17.9 ng/L | Berville-en-Caux | ST PIERRE DE BENOUVILLE, ST LAURENT EN CAUX | |
| 7.4 ng/L – < 8.4 ng/L · calculated | 17.2 ng/L | Saint-Pierre-Bénouville | ST PIERRE DE BENOUVILLE | |
| < 5 ng/L · calculated | 8 ng/L | Saint-Laurent-en-Caux | ST LAURENT EN CAUX | |
| 4 ng/L – < 7 ng/L · calculated | 6 ng/L | Saint-Pierre-Bénouville | ST PIERRE DE BENOUVILLE |
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
The authorities have not published an overall verdict for this water.
Values to watch
These results are close to their legal limit, or over it.
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 40 mg/L | ≤ 50 mg/L | within the limit |
See all 20 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 40 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | <0,010 mg/L | ≤ 0.5 mg/L | within the limit |
| Lead | 0.55 µg/L | ≤ 10 µg/L | within the limit |
| Copper | 0.32 mg(Cu)/L | ≤ 2 mg(Cu)/L | within the limit |
| Nickel | 6.2 µg/L | ≤ 20 µg/L | within the limit |
| Arsenic | 0.41 µg/L | ≤ 10 µg/L | within the limit |
| Cadmium | <0,025 µg/L | ≤ 5 µg/L | within the limit |
| Chromium | <0,50 µg/L | ≤ 50 µg/L | within the limit |
| Fluoride | <0,10 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 | 7.5 unité pH | 6.5–9 unité pH | within the limit |
| Water hardness | 34.8 °f | no limit | for reference |
| Electrical conductivity | 727 µS/cm | 200–1,100 µS/cm | within the limit |
| Chloride | 28.8 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 12.7 mg/L | ≤ 250 mg/L | within the limit |
| Sodium | 18.7 mg/L | ≤ 200 mg/L | within the limit |
| Iron | <1,0 µg/L | ≤ 200 µg/L | within the limit |
| Turbidity | <0,1 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in Saint-Laurent-en-Caux safe to drink?
All the values shown here (27 April 2026) are within the legal limits, but the authorities have not published an overall verdict for this water. “Eau conforme aux exigences de qualité sur le prélèvement réalisé. Il s'agit d'un nouveau contrôle effectué après une non conformité chimique. 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.”
How high are PFAS levels in Saint-Laurent-en-Caux'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 Saint-Laurent-en-Caux also meet the strictest limits in Europe?
As far as this check can tell, yes. None of the four compounds was quantified, so their total is below 4 ng/L, the sum of the laboratory's detection limits, and under Sweden's legal limit of 4 ng/L in force since 2026.
Are PFAS levels rising in Saint-Laurent-en-Caux'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 Saint-Laurent-en-Caux?
The water hardness in Saint-Laurent-en-Caux is 34.8 °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 12 September 2026.
Same water network
Same distribution network as Saint-Laurent-en-Caux, so in principle the same water.
Nearby communes
The closest to Saint-Laurent-en-Caux 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=76597
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 12 September 2026
- Supply networks
- ST PIERRE DE BENOUVILLE, ST LAURENT EN CAUX
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.