PFAS in Terres de Druance'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.
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 29 July 2026
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide perfluoro tridecanoique (PFTrDA) | <0,002 µg/L |
| Acide perfluorohexanoïque (PFHXA) | <0,001 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,001 µg/L |
| Perfluorohexane sulfonate (PFHXS) | <0,0010 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,001 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,001 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,001 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,001 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,001 µg/L |
| Acide perfluoro-octanoïque (PFOA) | <0,001 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,001 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | <0,0010 µg/L |
| Acide perfluoropentanoïque (PFPEA) | <0,0010 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,001 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,001 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,001 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,0020 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,0050 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | <0,0010 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <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 Terres de Druance
Get new PFAS results for Terres de Druance, 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
- 29 July 2026
- Water supplier
- SIAEP CLECY DRUANCE
In Terres de Druance, none of the 4 most closely watched PFAS (PFAS-4) was detected at the latest PFAS check on 29 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). 11 checks since 22 January 2025: sum of 20 PFAS up to 1.6 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 Terres de Druance
11 PFAS checks since 22 January 2025, from the published measurements. Samples from 5 communes on the same network: it's the same water, so each one applies to Terres de Druance. Samples come from 5 distribution networks. The trend refers to the network “LES TASSES”.
“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 | Terres de Druance | LASSY | |
| < 4 ng/L · calculated | < detection limit | La Villette | LA VILLETTE | |
| 1.6 ng/L – < 4.6 ng/L · calculated | 1.6 ng/L | Valdallière | PONT-D'ELOY | |
| < 4 ng/L · calculated | < detection limit | Terres de Druance | LES TASSES, LES TASSES | |
| 1.1 ng/L – < 4.1 ng/L · calculated | 1.1 ng/L | Périgny | LA VILLETTE | |
| < 4 ng/L · calculated | < detection limit | Clécy | LES TASSES, LES TASSES | |
| < 4 ng/L · calculated | < detection limit | Terres de Druance | LASSY | |
| < 4 ng/L · calculated | < detection limit | La Villette | LES TASSES, LES TASSES | |
| < 6 ng/L · calculated | < detection limit | Terres de Druance | SAINT JEAN LE BLANC, SAINT JEAN LE BLANC | |
| < 6 ng/L · calculated | < detection limit | Périgny | LA VILLETTE | |
| < 6 ng/L · calculated | < detection limit | Valdallière | PONT-D'ELOY |
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: pH 6.3 unité pH on 29 July 2026 (reference 6.5–9 unité pH). These are indicator parameters with reference values, not legal limits.
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Lead | 8.7 µg/L | ≤ 10 µg/L | within the limit |
| pH | 6.3 unité pH | 6.5–9 unité pH | below the reference value |
See all 20 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 8.27 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | <0,010 mg/L | ≤ 0.5 mg/L | within the limit |
| Lead | 8.7 µg/L | ≤ 10 µg/L | within the limit |
| Copper | 0.14 mg(Cu)/L | ≤ 2 mg(Cu)/L | within the limit |
| Nickel | 5 µg/L | ≤ 20 µg/L | within the limit |
| Arsenic | <0,25 µg/L | ≤ 10 µg/L | within the limit |
| Cadmium | <0,025 µg/L | ≤ 5 µg/L | within the limit |
| Chromium | <0,50 µg/L | ≤ 50 µg/L | within the limit |
| Fluoride | 0.11 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 | 6.3 unité pH | 6.5–9 unité pH | below the reference value |
| Water hardness | 13.4 °f | no limit | for reference |
| Electrical conductivity | 231 µS/cm | 200–1,100 µS/cm | within the limit |
| Chloride | 57.9 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 7.37 mg/L | ≤ 250 mg/L | within the limit |
| Sodium | 12 mg/L | ≤ 200 mg/L | within the limit |
| Iron | 49.8 µg/L | ≤ 200 µg/L | within the limit |
| Turbidity | 0.25 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in Terres de Druance safe to drink?
Yes. At the check on 29 July 2026, the tap water in Terres de Druance was within every limit tested. Outside a reference value: pH 6.3 unité pH on 29 July 2026 (reference 6.5–9 unité pH). These are indicator parameters with reference values, not legal limits. “L'eau était, au moment du prélèvement, conforme aux normes bactériologiques fixées par la réglementation. Par contre, sur le plan chimique, il convient de noter une valeur de pH inférieure à la référence de qualité minimum de 6,5 montrant une insuffisance de neutralisation de l'eau prélevée.”
How high are PFAS levels in Terres de Druance'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 Terres de Druance 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 Terres de Druance'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 Terres de Druance?
The water hardness in Terres de Druance is 13.4 °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 Terres de Druance, so in principle the same water.
Nearby communes
The closest to Terres de Druance 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=14357
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 21 September 2026
- Supply networks
- LASSY, LES TASSES, LA VILLETTE, SAINT JEAN LE BLANC, PONT-D'ELOY
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.