PFAS in La Nouaille's tap water: under 44 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 44 ng/L, 88 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 to 40 ng/L upward. None reached that limit, so their total is below 44 ng/L rather than zero.
checked on 13 October 2025
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide perfluoroheptanoïque (PFHPA) | <0,004 µg/L |
| Perfluorohexane sulfonate (PFHXS) | <0,001 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,002 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,005 µg/L |
| Acide perfluoropentanoïque (PFPEA) | <0,002 µg/L |
| Acide perfluorohexanoïque (PFHXA) | <0,002 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,01 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,005 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,002 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,005 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,04 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,005 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,005 µg/L |
| Acide perfluoro-octanoïque (PFOA) | <0,002 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,005 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,005 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,005 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,005 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | <0,001 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,002 µg/L |
None found. The lab sees nothing below 44 ng/L, so our 0.5 ng/L benchmark cannot be checked.
Water report for La Nouaille
Get new PFAS results for La Nouaille, 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 October 2025
- Water supplier
- SAUR
In La Nouaille, none of the 4 most closely watched PFAS (PFAS-4) was detected at the latest PFAS check on 13 October 2025. The total is below 44 ng/L, the sum of the detection limits and 88 times our 0.5 ng/L benchmark. Sum of 20 PFAS: <SEUIL µg/L, below the EU legal limit (100 ng/L). 3 checks since 13 October 2025, sum of 20 PFAS always 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 La Nouaille
3 PFAS checks since 13 October 2025, from the published measurements. Samples come from 3 distribution networks. The trend refers to the network “LA NOUAILLE BOURG”.
“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 | Network |
|---|---|---|---|
| < 44 ng/L · calculated | < detection limit | LA NOUAILLE BOURG | |
| < 44 ng/L · calculated | < detection limit | ST SULPICE LES CHAMPS VALLIERE | |
| < 44 ng/L · calculated | < detection limit | LA NOUAILLE LE SAINTOUX |
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: Coliform bacteria 2 n/(100mL) on 29 June 2026 (reference ≤ 0 mL)), pH 6.3 unité pH on 23 June 2026 (reference 6.5–9 unité pH), Electrical conductivity 48 µS/cm on 23 June 2026 (reference 200–1,100 µS/cm). These are indicator parameters with reference values, not legal limits.
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Coliform bacteria | 2 n/(100mL) | ≤ 0 mL) | above the reference value |
| pH | 6.3 unité pH | 6.5–9 unité pH | below the reference value |
| Electrical conductivity | 48 µS/cm | 200–1,100 µS/cm | below the reference value |
See all 17 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 7.5 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | <0,01 mg/L | ≤ 0.5 mg/L | within the limit |
| Arsenic | <1,00 µg/L | ≤ 10 µg/L | within the limit |
| Cadmium | <1,00 µg/L | ≤ 5 µg/L | within the limit |
| Chromium | <1,00 µg/L | ≤ 50 µg/L | within the limit |
| Fluoride | 0.18 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 | 2 n/(100mL) | ≤ 0 mL) | above the reference value |
| pH | 6.3 unité pH | 6.5–9 unité pH | below the reference value |
| Water hardness | 1 °f | no limit | for reference |
| Electrical conductivity | 48 µS/cm | 200–1,100 µS/cm | below the reference value |
| Chloride | 4.4 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 1.3 mg/L | ≤ 250 mg/L | within the limit |
| Sodium | 3.36 mg/L | ≤ 200 mg/L | within the limit |
| Iron | 24 µg/L | ≤ 200 µg/L | within the limit |
| Turbidity | 0.38 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in La Nouaille safe to drink?
Yes. At the check on 29 June 2026, the tap water in La Nouaille was within every limit tested. Outside a reference value: Coliform bacteria 2 n/(100mL) on 29 June 2026 (reference ≤ 0 mL)), pH 6.3 unité pH on 23 June 2026 (reference 6.5–9 unité pH), Electrical conductivity 48 µS/cm on 23 June 2026 (reference 200–1,100 µS/cm). These are indicator parameters with reference values, not legal limits. “Les résultats de cette contre-analyse mettent en évidence la persistance d'une contamination bactériologique sur cette desserte. La présence récurrente de coliformes totaux nécessite la mise en place d'une désinfection permanente.”
How high are PFAS levels in La Nouaille'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 La Nouaille 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 44 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 La Nouaille'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 La Nouaille?
The water hardness in La Nouaille is 1 °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 12 September 2026.
Same water network
Same distribution network as La Nouaille, so in principle the same water.
Nearby communes
The closest to La Nouaille 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=23144
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 12 September 2026
- Supply networks
- LA NOUAILLE BOURG, LA NOUAILLE LE SAINTOUX, ST SULPICE LES CHAMPS VALLIERE
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.