Drinking water quality in Thann
PFAS in drinking water
The total of 20 PFAS ("forever chemicals") was last measured at 0.022 µg/L. The EU limit is 0.1 µg/L, so this water is at 22 % of the limit. (18 February 2026)
The four most harmful PFAS add up to 0 µg/L, below the health limit of 0.004 µg/L used in Sweden since 2026.
Substances too small to measure count as 0, so the real total may be higher.
20 PFAS (see each substance)
| Acide perfluorobutanoïque (PFBA) | 0.022 µg/L |
| Acide perfluoro-octanoïque (PFOA) | <0,002 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,002 µg/L |
| Acide perfluorohexanoïque (PFHXA) | <0,005 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,002 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,005 µg/L |
| Perfluorohexane sulfonate (PFHXS) | <0,002 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | <0,002 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,002 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,002 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,002 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,002 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | <0,002 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,002 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,002 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,002 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,002 µg/L |
| Acide perfluoropentanoïque (PFPEA) | <0,005 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,002 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,002 µg/L |
Water report for Thann
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Official assessment
The latest official test passed all quality requirements.
„Eau d'alimentation conforme aux limites de qualité et non conforme aux références de qualité. Eau douce, agressive, très faiblement minéralisée susceptible, dans certaines conditions défavorables (notamment stagnation de l'eau), de dissoudre certains métaux des canalisations. Il est conseillé de ne consommer l'eau du robinet qu'après un écoulement de 15 à 30 secondes. L'absence de canalisation en plomb dans les parties privatives des réseaux doit être vérifiée.“
Show all 21 official measurements
| Parameter | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 4.1 mg/L | ≤ 50 mg/L | within limit |
| Nitrite | <0,01 mg/L | ≤ 0.5 mg/L | within limit |
| Lead | <0,1 µg/L | ≤ 10 µg/L | within limit |
| Copper | 0.0321 mg(Cu)/L | ≤ 2 mg(Cu)/L | within limit |
| Nickel | <0,2 µg/L | ≤ 20 µg/L | within limit |
| Arsenic | 1.78 µg/L | ≤ 10 µg/L | within limit |
| Cadmium | <0,01 µg/L | ≤ 5 µg/L | within limit |
| Chromium | 1.08 µg/L | ≤ 50 µg/L | within limit |
| Uranium | 0.17 µg/L | ≤ 30 µg/L | within limit |
| Fluoride | 0.05 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 unité pH | 6.5–9 unité pH | within limit |
| Water hardness | 5.1 °f | no limit | informational |
| Electrical conductivity | 140 µS/cm | 200–1,100 µS/cm | exceeded |
| Chloride | 11 mg/L | ≤ 250 mg/L | within limit |
| Sulphate | 5.7 mg/L | ≤ 250 mg/L | within limit |
| Sodium | 4.8 mg/L | ≤ 200 mg/L | within limit |
| Iron | 14 µg/L | ≤ 200 µg/L | within limit |
| Turbidity | 0.4 NFU | ≤ 2 NFU | within limit |
Frequently asked questions
Is tap water in Thann safe to drink?
Yes. The latest official test (15 June 2026) checked the tap water in Thann and it passed every requirement.
How high are PFAS levels in Thann's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at 0.022 µg/L. The EU limit is 0.1 µg/L, so this water is at 22 % of the limit. (below the EU limit)
Does the water in Thann 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 µg/L stays below.
How hard is the water in Thann?
The water hardness in Thann is 5.1 °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 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=68334
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 28 August 2026
- Supply networks
- THANN VIEUX THANN LEIMBACH ZB
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.