PFAS in Montsinéry-Tonnegrande'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.
Sample taken in Roura, on the same distribution network as Montsinéry-Tonnegrande (LA COMTE). The health authority samples one tap per network; a network carries the same treated water everywhere.
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 13 April 2026
19 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide perfluoro undecanoïque (PFUnA) | <0,0003 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,0003 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,0003 µg/L |
| Acide perfluoro-octanoïque (PFOA) | <0,0003 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,0003 µg/L |
| Perfluorohexane sulfonate (PFHXS) | <0,0003 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,0003 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,0003 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,0003 µg/L |
| Acide perfluorohexanoïque (PFHXA) | <0,0003 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,0003 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | <0,0003 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,0003 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | <0,0003 µg/L |
| Acide perfluoropentanoïque (PFPEA) | <0,0003 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,010 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,0010 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,0003 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <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 Montsinéry-Tonnegrande
Get new PFAS results for Montsinéry-Tonnegrande, 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
- 13 April 2026
- Water supplier
- SOCIETE GUYANAISE DES EAUX
In Montsinéry-Tonnegrande, none of the 4 most closely watched PFAS (PFAS-4) was detected at the latest PFAS check on 13 April 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). Sampled in Roura, on the same network. 2 checks since 20 January 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 Montsinéry-Tonnegrande
2 PFAS checks since 20 January 2026, from the published measurements.
“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 |
|---|---|---|---|
| < 1.2 ng/L · calculated | < 300 ng/L | Roura | |
| < 1.2 ng/L · calculated | < 300 ng/L | Roura |
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.
See all 17 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 |
| Cadmium | <0,5 µg/L | ≤ 5 µg/L | within the limit |
| Chromium | <10 µg/L | ≤ 50 µg/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 | 2.8 °f | no limit | for reference |
| Electrical conductivity | 247 µS/cm | 200–1,100 µS/cm | within the limit |
| Chloride | 46.15 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | <1,00 mg/L | ≤ 250 mg/L | within the limit |
| Iron | 85 µg/L | ≤ 200 µg/L | within the limit |
| Turbidity | <0,5 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in Montsinéry-Tonnegrande safe to drink?
All the values shown here (23 July 2026) are within the legal limits, but the authorities have not published an overall verdict for this water. “Eau d'alimentation non conforme aux références de qualité. Une concentration d’aluminium supérieure à la valeur de référence fixé e par la réglementation (0,2 mg/L selon l’arrêté du 11 janvier 2007 mo difié) indique un dysfonctionnement des étapes de coagulation floculat ion. Ce dépassement est susceptible d’altérer les caractéristiques org anoleptiques de l’eau (goût, coloration, dépôts) et doit faire l’objet d’une investigation et de mesures correctives conformément aux exigen ces du Code de la santé publique.”
How high are PFAS levels in Montsinéry-Tonnegrande'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 Montsinéry-Tonnegrande 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 Montsinéry-Tonnegrande'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 Montsinéry-Tonnegrande?
The water hardness in Montsinéry-Tonnegrande is 2.8 °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.
Same water network
Same distribution network as Montsinéry-Tonnegrande, so in principle the same water.
Nearby communes
The closest to Montsinéry-Tonnegrande 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=97313
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 21 September 2026
- Supply networks
- LA COMTE
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.