PFAS in Saint-Laurent-du-Maroni's tap water: under 1.2 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 1.2 ng/L, 2.4 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 0.3 ng/L upward. None reached that limit, so their total is below 1.2 ng/L rather than zero.
checked on 12 May 2026
19 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide perfluoroheptane sulfonique (PFHpS) | <0,0003 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | <0,0003 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,0003 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,0003 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,0003 µg/L |
| Acide perfluoropentanoïque (PFPEA) | <0,0003 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,0003 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,0003 µg/L |
| Acide perfluorohexanoïque (PFHXA) | <0,0003 µg/L |
| Acide perfluoro-octanoïque (PFOA) | <0,0003 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,0003 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,0003 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | <0,0003 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,0003 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,010 µg/L |
| Perfluorohexane sulfonate (PFHXS) | <0,0003 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,0010 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,0003 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,0003 µg/L |
None found. The lab sees nothing below 1.2 ng/L, so our 0.5 ng/L benchmark cannot be checked.
Water report for Saint-Laurent-du-Maroni
Get new PFAS results for Saint-Laurent-du-Maroni, 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
- 12 May 2026
- Water supplier
- SOCIETE GUYANAISE DES EAUX
In Saint-Laurent-du-Maroni, none of the 4 most closely watched PFAS (PFAS-4) was detected at the latest PFAS check on 12 May 2026. The total is below 1.2 ng/L, the sum of the detection limits and 2.4 times our 0.5 ng/L benchmark. Sum of 20 PFAS: <0,30 µg/L, below the EU legal limit (100 ng/L). 2 checks since 12 February 2026, sum of 20 PFAS always below the detection limit (300 ng/L). Source: Hub'eau, Qualité de l'eau potable (Ministère de la Santé / OFB / BRGM).
Details and sources
PFAS over time in Saint-Laurent-du-Maroni
2 PFAS checks since 12 February 2026, from the published measurements. Samples come from 2 distribution networks. The trend refers to the network “SAINT LAURENT”.
“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 | Network |
|---|---|---|---|
| < 1.2 ng/L · calculated | < 300 ng/L | SAINT JEAN | |
| < 1.2 ng/L · calculated | < 300 ng/L | SAINT LAURENT |
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 within every limit tested.
Values to watch
These results are close to their legal limit, or over it.
Outside a reference value: Electrical conductivity 75 µS/cm on 29 July 2026 (reference 180–1,000 µS/cm). These are indicator parameters with reference values, not legal limits.
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Electrical conductivity | 75 µS/cm | 180–1,000 µS/cm | below the reference value |
See all 21 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | <1 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | <0,05 mg/L | ≤ 0.5 mg/L | within the limit |
| Lead | <5 µg/L | ≤ 10 µg/L | within the limit |
| Copper | <0,05 mg(Cu)/L | ≤ 2 mg(Cu)/L | within the limit |
| Nickel | <10 µg/L | ≤ 20 µg/L | within the limit |
| Arsenic | <5 µg/L | ≤ 10 µg/L | within the limit |
| Cadmium | <0,5 µg/L | ≤ 5 µg/L | within the limit |
| Chromium | <10 µg/L | ≤ 50 µg/L | within the limit |
| Uranium | <0,05 µg/L | ≤ 30 µg/L | within the limit |
| Fluoride | <0,2 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 | 2.6 °f | no limit | for reference |
| Electrical conductivity | 75 µS/cm | 180–1,000 µS/cm | below the reference value |
| Chloride | 3.06 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 18.47 mg/L | ≤ 250 mg/L | within the limit |
| Sodium | 1.91 mg/L | ≤ 200 mg/L | within the limit |
| Iron | <50 µg/L | ≤ 200 µg/L | within the limit |
| Turbidity | 0.54 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in Saint-Laurent-du-Maroni safe to drink?
Yes. At the check on 29 July 2026, the tap water in Saint-Laurent-du-Maroni was within every limit tested. Outside a reference value: Electrical conductivity 75 µS/cm on 29 July 2026 (reference 180–1,000 µS/cm). These are indicator parameters with reference values, not legal limits. “Eau respectant les limites de qualité (annexe I-I) contenues dans l'arrêté du 11/01/2007. Les références de qualité (annexe I-II) sont dépassées pour le paramètre conductivité. L'eau est potable et peut être consommée.”
How high are PFAS levels in Saint-Laurent-du-Maroni's drinking water?
At the latest check the total of 20 PFAS ("forever chemicals") was below the laboratory's reporting limit of 300 ng/L. The EU limit is 100 ng/L, so this water is under 300 % of the limit. (below the EU limit)
Does the water in Saint-Laurent-du-Maroni 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 1.2 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-du-Maroni'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-du-Maroni?
The water hardness in Saint-Laurent-du-Maroni is 2.6 °f (soft). 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 Saint-Laurent-du-Maroni 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=97311
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 21 September 2026
- Supply networks
- SAINT LAURENT, SPAROUINE 1, BASTIEN, PIMPIN, PROSPERITE, SAINT JEAN
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.