Drinking water quality in Seiches-sur-le-Loir
PFAS in drinking water
The total of 20 PFAS ("forever chemicals") was last measured at 0.0046 µg/L. The EU limit is 0.1 µg/L, so this water is at 5 % of the limit. (3 June 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) | 0.002 µg/L |
| Acide perfluoropentanoïque (PFPEA) | 0.0015 µg/L |
| Acide perfluorohexanoïque (PFHXA) | 0.001 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,0015 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | <0,0015 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,0015 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | <0,0015 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,001 µg/L |
| Acide perfluoro-octanoïque (PFOA) | <0,0005 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,0015 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,001 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,0015 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,0015 µg/L |
| Perfluorohexane sulfonate (PFHXS) | <0,0005 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,001 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,001 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,0005 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,001 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,001 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,0015 µg/L |
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Official assessment
The latest official test passed all quality requirements.
„Eau d'alimentation conforme aux exigences de qualité en vigueur pour l'ensemble des paramètres mesurés.“
Show all 21 official measurements
| Parameter | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 20 mg/L | ≤ 50 mg/L | within limit |
| Nitrite | <0,010 mg/L | ≤ 0.1 mg/L | within limit |
| Lead | 0.15 µg/L | ≤ 10 µg/L | within limit |
| Copper | 0.347 mg(Cu)/L | ≤ 2 mg(Cu)/L | within limit |
| Nickel | 2.3 µg/L | ≤ 20 µg/L | within limit |
| Arsenic | 0.3 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 | 0.2 µg/L | ≤ 30 µg/L | within limit |
| Fluoride | 0.079 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 | 18.6 °f | no limit | informational |
| Electrical conductivity | 566 µS/cm | 200–1,100 µS/cm | within limit |
| Chloride | 60.1 mg/L | ≤ 250 mg/L | within limit |
| Sulphate | 31.2 mg/L | ≤ 250 mg/L | within limit |
| Sodium | 38.9 mg/L | ≤ 200 mg/L | within limit |
| Iron | 3 µg/L | ≤ 200 µg/L | within limit |
| Turbidity | <0,30 NFU | ≤ 1 NFU | within limit |
Frequently asked questions
Is tap water in Seiches-sur-le-Loir safe to drink?
Yes. The latest official test (3 June 2026) checked the tap water in Seiches-sur-le-Loir and it passed every requirement.
How high are PFAS levels in Seiches-sur-le-Loir's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at 0.0046 µg/L. The EU limit is 0.1 µg/L, so this water is at 5 % of the limit. (below the EU limit)
Does the water in Seiches-sur-le-Loir 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 Seiches-sur-le-Loir?
The water hardness in Seiches-sur-le-Loir is 18.6 °f (medium). 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=49333
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 28 August 2026
- Supply networks
- SEICHES
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.