PFAS in Belforêt-en-Perche'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.
Sample taken in Corbon, on the same distribution network as Belforêt-en-Perche (ZD GUEROLLIERE). 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 1 ng/L upward. None reached that limit, so their total is below 4 ng/L rather than zero.
checked on 8 July 2026
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide perfluoro undecanoïque (PFUnA) | <0,0010 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,005 µg/L |
| Acide perfluoro-octanoïque (PFOA) | <0,001 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,001 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,0010 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,001 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,001 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,001 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,002 µg/L |
| Acide perfluorohexanoïque (PFHXA) | <0,001 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,0010 µg/L |
| Perfluorohexane sulfonate (PFHXS) | <0,0010 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,0010 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | <0,001 µg/L |
| Acide perfluoropentanoïque (PFPEA) | <0,001 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,002 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,0010 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,001 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | <0,0010 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,001 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 Belforêt-en-Perche
Get new PFAS results for Belforêt-en-Perche, 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
- 8 July 2026
- Water supplier
- STGS SARL
In Belforêt-en-Perche, none of the 4 most closely watched PFAS (PFAS-4) was detected at the latest PFAS check on 8 July 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). Sampled in Corbon, on the same network. 15 checks since 27 February 2025: sum of 20 PFAS up to 5.1 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 Belforêt-en-Perche
15 PFAS checks since 27 February 2025, from the published measurements. Samples from 11 communes on the same network: it's the same water, so each one applies to Belforêt-en-Perche. Samples come from 9 distribution networks. The trend refers to the network “ZD GUEROLLIERE”.
“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 | Corbon | ZD GUEROLLIERE | |
| 2 ng/L – < 5 ng/L · calculated | 5.1 ng/L | Vaunoise | ORIGNY LE ROUX | |
| < 4 ng/L · calculated | < detection limit | Saint-Martin-du-Vieux-Bellême | BELLEME | |
| < 4 ng/L · calculated | < detection limit | Saint-Cyr-la-Rosière | DAME MARIE | |
| < 4 ng/L · calculated | < detection limit | Belforêt-en-Perche | LA PERRIERE | |
| < 4 ng/L · calculated | < detection limit | Comblot | ZD GUEROLLIERE | |
| < 4 ng/L · calculated | 1 ng/L | Belforêt-en-Perche | MONTGAUDRY | |
| < 4 ng/L · calculated | < detection limit | Appenai-sous-Bellême | SERIGNY-IGE BOURG | |
| < 4 ng/L · calculated | < detection limit | Saint-Martin-du-Vieux-Bellême | DAME MARIE | |
| 1 ng/L – < 4 ng/L · calculated | 1 ng/L | Suré | ORIGNY LE ROUX | |
| < 6 ng/L · calculated | < detection limit | Comblot | ZD GUEROLLIERE | |
| < 6 ng/L · calculated | < detection limit | Bellême | BELLEME |
Show the 3 earlier checks (back to 27 February 2025)
| < 6 ng/L · calculated | < detection limit | Bellavilliers | BELLAVILLIERS | |
| < 6 ng/L · calculated | < detection limit | Pervenchères | PERVENCHERES | |
| < 6 ng/L · calculated | < detection limit | Belforêt-en-Perche | LA PERRIERE |
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.
See all 20 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 23 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | <0,010 mg/L | ≤ 0.5 mg/L | within the limit |
| Lead | <1 µg/L | ≤ 10 µg/L | within the limit |
| Copper | 0.007 mg/L | ≤ 2 mg/L | within the limit |
| Arsenic | 1.1 µg/L | ≤ 10 µg/L | within the limit |
| Cadmium | <0,025 µg/L | ≤ 5 µg/L | within the limit |
| Chromium | <1,0 µg/L | ≤ 50 µg/L | within the limit |
| Uranium | 0.61 µg/L | ≤ 30 µg/L | within the limit |
| Fluoride | 0.121 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 | 7.2 unité pH | 6.5–9 unité pH | within the limit |
| Water hardness | 34.6 °f | no limit | for reference |
| Electrical conductivity | 708 µS/cm | 200–1,100 µS/cm | within the limit |
| Chloride | 19 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 35 mg/L | ≤ 250 mg/L | within the limit |
| Sodium | 6.8 mg/L | ≤ 200 mg/L | within the limit |
| Iron | 10.5 µg/L | ≤ 200 µg/L | within the limit |
| Turbidity | <0,20 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in Belforêt-en-Perche safe to drink?
Yes. At the check on 8 July 2026, the tap water in Belforêt-en-Perche was within every limit tested. “Eau d'alimentation conforme aux exigences de qualité en vigueur pour l'ensemble des paramètres mesurés.”
How high are PFAS levels in Belforêt-en-Perche'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 Belforêt-en-Perche 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 Belforêt-en-Perche'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 Belforêt-en-Perche?
The water hardness in Belforêt-en-Perche is 34.6 °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 21 September 2026.
Same water network
Same distribution network as Belforêt-en-Perche, so in principle the same water.
Nearby communes
The closest to Belforêt-en-Perche 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=61196
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 21 September 2026
- Supply networks
- ZD GUEROLLIERE, BELLEME, LA PERRIERE, PERVENCHERES, MONTGAUDRY, ORIGNY LE ROUX, BELLAVILLIERS, DAME MARIE, SERIGNY-IGE BOURG
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.