PFAS in Gathemo's tap water: under 4 ng/L, none of the four main PFAS detected
Last PFAS check: · Source: Hub'eau
PFAS in drinking water
None of the 4 most harmful 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 27 January 2026
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide perfluoroheptanoïque (PFHPA) | 0.0011 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,001 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,0020 µg/L |
| Acide perfluoro-octanoïque (PFOA) | <0,0010 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | <0,001 µg/L |
| Acide perfluoropentanoïque (PFPEA) | <0,0010 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,0010 µg/L |
| Acide perfluorohexanoïque (PFHXA) | <0,0010 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,001 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,0010 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,0010 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,0050 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,0010 µg/L |
| Perfluorohexane sulfonate (PFHXS) | <0,0010 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,0010 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,001 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,001 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,0010 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,0010 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,002 µg/L |
Fails a current legal limit. The details are below.
Water report for Gathemo
Get new PFAS results for Gathemo, with a short explanation. At most one update a week, only when there's something new.
- EU legal limit
- 1.1 ng/L sum of 20 PFAS, below the 100 ng/L limit
- Last PFAS test
- 27 January 2026
- Water supplier
- VEOLIA EAU - SUD MANCHE
In Gathemo, none of the 4 most closely watched PFAS (PFAS-4) was detected at the latest PFAS check on 27 January 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: 1.1 ng/L (0.0011 µg/L), below the EU legal limit (100 ng/L). 2 checks since 22 May 2025: sum of 20 PFAS up to 1.1 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 Gathemo
2 PFAS checks since 22 May 2025, 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 |
|---|---|---|
| < 4 ng/L · calculated | 1.1 ng/L | |
| < 4 ng/L · calculated | < detection limit |
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 over at least one limit.
Values to watch
These results are close to their legal limit, or over it.
Outside a reference value: Coliform bacteria 13 n/(100mL) on 20 July 2026 (reference ≤ 0 mL)). These are indicator parameters with reference values, not legal limits.
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 29.8 mg/L | ≤ 50 mg/L | within the limit |
| Escherichia coli | 13 n/(100mL) | ≤ 0 mL) | over the limit |
| Coliform bacteria | 13 n/(100mL) | ≤ 0 mL) | above the reference value |
See all 18 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 29.8 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | <0,01 mg/L | ≤ 0.5 mg/L | within the limit |
| Arsenic | <0,25 µg/L | ≤ 10 µg/L | within the limit |
| Cadmium | 0.048 µg/L | ≤ 5 µg/L | within the limit |
| Chromium | <1,0 µg/L | ≤ 50 µg/L | within the limit |
| Uranium | <0,10 µg/L | ≤ 30 µg/L | within the limit |
| Fluoride | <0,050 mg/L | ≤ 1.5 mg/L | within the limit |
| Escherichia coli | 13 n/(100mL) | ≤ 0 mL) | over the limit |
| Enterococci | <1 n/(100mL) | ≤ 0 mL) | within the limit |
| Coliform bacteria | 13 n/(100mL) | ≤ 0 mL) | above the reference value |
| pH | 8.1 unité pH | 6.5–9 unité pH | within the limit |
| Water hardness | 12.3 °f | no limit | for reference |
| Electrical conductivity | 499 µS/cm | 200–1,100 µS/cm | within the limit |
| Chloride | 73 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 10 mg/L | ≤ 250 mg/L | within the limit |
| Sodium | 7 mg/L | ≤ 200 mg/L | within the limit |
| Iron | 7 µg/L | ≤ 200 µg/L | within the limit |
| Turbidity | <0,10 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in Gathemo safe to drink?
At the latest check, the water was over at least one limit. “L'eau distribuée était, au moment du prélèvement, non conforme aux limites et références de qualité fixées pour les paramètres bactériologiques. L'exploitant a été informé le 22/07/2026 des résultats observés afin de mettre en place des actions correctives immédiatement. De nouveaux prélèvements ont été programmés auprès du laboratoire.”
How high are PFAS levels in Gathemo's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at 1.1 ng/L. The EU limit is 100 ng/L, so this water is at 1 % of the limit. (below the EU limit)
Does the water in Gathemo 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 Gathemo'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 Gathemo?
The water hardness in Gathemo is 12.3 °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 Gathemo 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=50195
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 21 September 2026
- Supply networks
- GATHEMO
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.