Drinking water quality in Ussac
PFAS in drinking water
The total of 20 PFAS ("forever chemicals") was last measured at 0.0029 µg/L. The EU limit is 0.1 µg/L, so this water is at 3 % of the limit. (2 February 2026)
The four most harmful PFAS add up to 0.0029 µg/L, below the health limit of 0.004 µg/L used in Sweden since 2026.
One of these four, PFOA, is classified as causing cancer in humans by the WHO's cancer research agency (IARC).
Substances too small to measure count as 0, so the real total may be higher.
20 PFAS (see each substance)
| Acide sulfonique de perfluorooctane (PFOS) | 0.0029 µg/L |
| Acide perfluoro-octanoïque (PFOA) | <0,001 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,05 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,001 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,001 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,001 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,001 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,001 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,001 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | <0,001 µg/L |
| Perfluorohexane sulfonate (PFHXS) | <0,001 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,001 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,001 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,001 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,001 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,001 µg/L |
| Acide perfluoropentanoïque (PFPEA) | <0,025 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,001 µg/L |
| Acide perfluorohexanoïque (PFHXA) | <0,001 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,001 µg/L |
Water report for Ussac
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Official assessment
The latest official test passed all quality requirements.
„Examen conforme aux limites et références de qualité fixées par le Code de la Santé Publique (Art. R 1321-1 à R 1321-68) pour les paramètres mesurés.“
Show all 21 official measurements
| Parameter | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 5.5 mg/L | ≤ 50 mg/L | within limit |
| Nitrite | <0,01 mg/L | ≤ 0.5 mg/L | within limit |
| Lead | <0,2 µg/L | ≤ 10 µg/L | within limit |
| Copper | 0.0027 mg(Cu)/L | ≤ 2 mg(Cu)/L | within limit |
| Nickel | <0,5 µg/L | ≤ 20 µg/L | within limit |
| Arsenic | <0,2 µg/L | ≤ 10 µg/L | within limit |
| Cadmium | <0,02 µg/L | ≤ 5 µg/L | within limit |
| Chromium | <0,5 µg/L | ≤ 50 µg/L | within limit |
| Uranium | <0,02 µg/L | ≤ 30 µg/L | within limit |
| Fluoride | <0,1 mg/L | ≤ 1.5 mg/L | within limit |
| Escherichia coli | <1 n/(100mL) | ≤ 0 mL) | within limit |
| Enterococci | <1 n/(100mL) | ≤ 0 mL) | within limit |
| Coliform bacteria | <1 n/(100mL) | ≤ 0 mL) | within limit |
| pH | 7.9 unité pH | 6.5–9 unité pH | within limit |
| Water hardness | 7.6 °f | no limit | informational |
| Electrical conductivity | 247 µS/cm | 200–1,100 µS/cm | within limit |
| Chloride | 11 mg/L | ≤ 250 mg/L | within limit |
| Sulphate | 5.2 mg/L | ≤ 250 mg/L | within limit |
| Sodium | 8.1 mg/L | ≤ 200 mg/L | within limit |
| Iron | <1 µg/L | ≤ 200 µg/L | within limit |
| Turbidity | <0,3 NFU | ≤ 2 NFU | within limit |
Frequently asked questions
Is tap water in Ussac safe to drink?
Yes. The latest official test (5 May 2026) checked the tap water in Ussac and it passed every requirement.
How high are PFAS levels in Ussac's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at 0.0029 µg/L. The EU limit is 0.1 µg/L, so this water is at 3 % of the limit. (below the EU limit)
Does the water in Ussac also meet the strictest limits in Europe?
Yes. Even against Europe's strictest limit, the health limit of 0.004 µg/L used in Sweden since 2026, the measured value of 0.0029 µg/L stays below.
How hard is the water in Ussac?
The water hardness in Ussac is 7.6 °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 28 August 2026.
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=19274
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 28 August 2026
- Supply networks
- AGUDOUR
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.