PFAS in the tap water of Saint-Pierre (La Réunion): under 8 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 8 ng/L, 16 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 2 ng/L upward. None reached that limit, so their total is below 8 ng/L rather than zero.
checked on 24 June 2026
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,005 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | <0,002 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,005 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,002 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,002 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,002 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,002 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,002 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,002 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,002 µg/L |
| Perfluorohexane sulfonate (PFHXS) | <0,002 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,002 µg/L |
| Acide perfluorohexanoïque (PFHXA) | <0,005 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | <0,002 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,002 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,002 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,002 µg/L |
| Acide perfluoropentanoïque (PFPEA) | <0,005 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,002 µg/L |
| Acide perfluoro-octanoïque (PFOA) | <0,002 µg/L |
None found. The lab sees nothing below 8 ng/L, so our 0.5 ng/L benchmark cannot be checked.
Water report for Saint-Pierre
Get new PFAS results for Saint-Pierre, 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
- 24 June 2026
- Water supplier
- RUNEO
In Saint-Pierre, none of the 4 most closely watched PFAS (PFAS-4) was detected at the latest PFAS check on 24 June 2026. The total is below 8 ng/L, the sum of the detection limits and 16 times our 0.5 ng/L benchmark. Sum of 20 PFAS: <0,005 µg/L, below the EU legal limit (100 ng/L). 32 checks since 13 May 2025, PFAS-4 always below the detection limit (4 ng/L). Source: Hub'eau, Qualité de l'eau potable (Ministère de la Santé / OFB / BRGM).
Details and sources
PFAS over time in Saint-Pierre
32 PFAS checks since 13 May 2025, values as published. Samples from 2 communes on the same network: it's the same water, so each one applies to Saint-Pierre. Samples come from 18 distribution networks. The trend refers to the network “RESEAU MONTVERT LES HAUTS”.
| Date | PFAS-4 | Sum of 20 PFAS | Sampled at | Network |
|---|---|---|---|---|
| < 2 ng/L | < 5 ng/L | Saint-Pierre | RESEAU VILLE BANK | |
| < 2 ng/L | < 5 ng/L | Saint-Pierre | RESEAU MONTVERT LES HAUTS | |
| < 2 ng/L | < 5 ng/L | Saint-Pierre | RESEAU BASSIN MARTIN | |
| < 2 ng/L | < 5 ng/L | Saint-Pierre | RESEAU GRAND BOIS | |
| < 2 ng/L | < 5 ng/L | Saint-Pierre | RESEAU MONT-VERT BAS | |
| < 2 ng/L | < 5 ng/L | Saint-Pierre | RESEAU BASSIN PLAT | |
| < 2 ng/L | < 5 ng/L | Saint-Pierre | RESEAU VILLE SALETTE | |
| < 2 ng/L | < 5 ng/L | Saint-Pierre | RESEAU BASSE TERRE | |
| < 2 ng/L | < 5 ng/L | Saint-Pierre | RESEAU PIERREFONDS | |
| < 2 ng/L | < 5 ng/L | Saint-Pierre | RESEAU FREDELINE | |
| < 2 ng/L | < 5 ng/L | Saint-Pierre | RESEAU BOISSY - CD3 | |
| < 2 ng/L | < 5 ng/L | Saint-Pierre | RESEAU RIVIERE D'ABORD |
Show the 20 earlier checks (back to 13 May 2025)
| < 2 ng/L | < 5 ng/L | Saint-Pierre | RESEAU USINE DASSY CONDE | |
| < 4 ng/L | < 29 ng/L | Saint-Pierre | RESEAU FREDELINE | |
| < 4 ng/L | < 29 ng/L | Saint-Pierre | RESEAU BASSIN PLAT | |
| < 4 ng/L | < 29 ng/L | Saint-Pierre | RESEAU VILLE SALETTE | |
| < 4 ng/L | < 29 ng/L | Saint-Pierre | RESEAU DASSY_BRAS DE LA PLAINE (ABA), RESEAU DASSY_BRAS DE LA PLAINE (ABA) | |
| < 4 ng/L | < 29 ng/L | Saint-Pierre | RESEAU VILLE BANK | |
| < 4 ng/L | < 29 ng/L | Saint-Pierre | RESEAU BASSE TERRE JOLI FOND (ABA), RESEAU BASSE TERRE JOLI FOND (ABA) | |
| < 4 ng/L | < 29 ng/L | Saint-Pierre | RESEAU GRAND BOIS | |
| < 4 ng/L | < 29 ng/L | Saint-Pierre | RESEAU RIVIERE D'ABORD | |
| < 4 ng/L | < 29 ng/L | Saint-Pierre | RESEAU BASSE TERRE LES HAUTS (ABA), RESEAU BASSE TERRE LES HAUTS (ABA) | |
| < 4 ng/L | < 29 ng/L | Saint-Pierre | RESEAU DASSY_BRAS DE LA PLAINE (ABA), RESEAU DASSY_BRAS DE LA PLAINE (ABA) | |
| < 4 ng/L | < 29 ng/L | Saint-Pierre | RESEAU CONCESSION CONDE (ABA), RESEAU CONCESSION CONDE (ABA) | |
| < 4 ng/L | < 29 ng/L | Saint-Pierre | RESEAU FREDELINE | |
| < 4 ng/L | < 29 ng/L | Saint-Pierre | RESEAU PIERREFONDS | |
| < 4 ng/L | < 29 ng/L | Saint-Pierre | RESEAU MONTVERT LES HAUTS | |
| < 5 ng/L | < 29 ng/L | Le Tampon | RESEAU MONTVERT LES HAUTS, RESEAU BOISSY - CD3 | |
| < 4 ng/L | < 29 ng/L | Saint-Pierre | RESEAU LIGNE DES BAMBOUS (ABA), RESEAU LIGNE DES BAMBOUS (ABA) | |
| < detection limit | 1 ng/L | Le Tampon | RESEAU MONTVERT LES HAUTS, RESEAU BOISSY - CD3 | |
| < detection limit | 1 ng/L | Saint-Pierre | RESEAU VILLE BANK | |
| < detection limit | 5 ng/L | Saint-Pierre | RESEAU BASSIN MARTIN |
“<” means not detected, the figure being the detection limit. “–” means not published. Labs have only reported the PFAS-4 sum (SANDRE code 9268) since autumn 2025. 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 121 µS/cm on 27 July 2026 (reference 200–1,100 µS/cm). These are indicator parameters with reference values, not legal limits.
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Electrical conductivity | 121 µS/cm | 200–1,100 µS/cm | below the reference value |
See all 21 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 3.7 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | <0,05 mg/L | ≤ 0.5 mg/L | within the limit |
| Lead | 0.1 µg/L | ≤ 10 µg/L | within the limit |
| Copper | 0.0014 mg(Cu)/L | ≤ 2 mg(Cu)/L | within the limit |
| Nickel | <0,2 µg/L | ≤ 20 µg/L | within the limit |
| Arsenic | <0,01 µg/L | ≤ 10 µg/L | within the limit |
| Cadmium | <0,01 µg/L | ≤ 5 µg/L | within the limit |
| Chromium | 0.61 µg/L | ≤ 50 µg/L | within the limit |
| Uranium | 0.01 µg/L | ≤ 30 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 | 7.4 unité pH | 6.5–9 unité pH | within the limit |
| Water hardness | 6 °f | no limit | for reference |
| Electrical conductivity | 121 µS/cm | 200–1,100 µS/cm | below the reference value |
| Chloride | 4.2 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 2.7 mg/L | ≤ 250 mg/L | within the limit |
| Sodium | 8.9 mg/L | ≤ 200 mg/L | within the limit |
| Iron | <50 µg/L | ≤ 200 µg/L | within the limit |
| Turbidity | <0,20 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in Saint-Pierre safe to drink?
Yes. At the check on 27 July 2026, the tap water in Saint-Pierre was within every limit tested. Outside a reference value: Electrical conductivity 121 µS/cm on 27 July 2026 (reference 200–1,100 µS/cm). These are indicator parameters with reference values, not legal limits. “Eau d'alimentation conforme aux limites de qualité et non conforme aux références de qualité.”
How high are PFAS levels in Saint-Pierre's drinking water?
At the latest check the total of 20 PFAS ("forever chemicals") was below the laboratory's reporting limit of 5 ng/L. The EU limit is 100 ng/L, so this water is under 5 % of the limit. (below the EU limit)
Does the water in Saint-Pierre also meet the strictest limits in Europe?
The check cannot say. None of the four compounds was quantified, but the laboratory's detection limits add up to 8 ng/L, above Sweden's legal limit of 4 ng/L in force since 2026, so a value between the two would go unnoticed.
Are PFAS levels rising in Saint-Pierre's tap water?
No. Since 13 May 2025, 32 checks have been published and the PFAS-4 sum stayed below the laboratory's detection limit (4 ng/L) every time.
How hard is the water in Saint-Pierre?
The water hardness in Saint-Pierre is 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-Pierre 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=97416
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 21 September 2026
- Supply networks
- RESEAU VILLE SALETTE, RESEAU LIGNE DES BAMBOUS (ABA), RESEAU GRAND BOIS, RESEAU BASSIN PLAT, RESEAU CONCESSION CONDE (ABA), RESEAU MONTVERT LES HAUTS, RESEAU BASSIN MARTIN, RESEAU FREDELINE, RESEAU RIVIERE D'ABORD, RESEAU VILLE BANK, RESEAU MONT-VERT BAS, RESEAU BOISSY - CD3, RESEAU PIERREFONDS, RESEAU BASSE TERRE JOLI FOND (ABA), RESEAU BASSE TERRE LES HAUTS (ABA), RESEAU DASSY_BRAS DE LA PLAINE (ABA), RESEAU USINE DASSY CONDE, RESEAU BASSE TERRE
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.