Drinking water quality in Le Controis-en-Sologne
PFAS in drinking water
The total of 20 PFAS ("forever chemicals") was last measured at 0.015 µg/L. The EU limit is 0.1 µg/L, so this water is at 15 % of the limit. (28 January 2026)
The four most harmful PFAS add up to 0.0018 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.
3 PFAS (see each substance)
| Acide sulfonique de perfluorooctane (PFOS) | 0.0018 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,0005 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,001 µg/L |
Water report for Le Controis-en-Sologne
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Official assessment
The latest official test failed at least one quality requirement.
„Les résultats d'analyses de ce prélèvement ont mis en évidence un dépassement de la limite de qualité (0,1 µg/L) en pesticides: le métabolite R417888 du chlorothalonil. Cette situation est connue et des mesures de gestion sont en projet. S ur les autres paramètres analysés, eau conforme aux exigences de qualité relatives aux eaux destinées à la consommation humaine.“
Values to watch
These values are at least halfway to their legal limit, or over it.
| Parameter | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 30 mg/L | ≤ 50 mg/L | within limit |
Show all 17 official measurements
| Parameter | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 30 mg/L | ≤ 50 mg/L | within limit |
| Nitrite | <0,010 mg/L | ≤ 0.5 mg/L | within limit |
| Lead | 0.4 µg/L | ≤ 10 µg/L | within limit |
| Copper | 0.0031 mg(Cu)/L | ≤ 2 mg(Cu)/L | within limit |
| Nickel | 0.8 µg/L | ≤ 20 µg/L | within limit |
| Chromium | 0.7 µg/L | ≤ 50 µg/L | within limit |
| Uranium | 2.2 µg/L | ≤ 30 µg/L | within limit |
| Fluoride | 0.427 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 | 7.8 unité pH | 6.5–9 unité pH | within limit |
| Water hardness | 18.3 °f | no limit | informational |
| Chloride | 26.2 mg/L | ≤ 250 mg/L | within limit |
| Sulphate | 23 mg/L | ≤ 250 mg/L | within limit |
| Iron | 5 µg/L | ≤ 200 µg/L | within limit |
| Turbidity | <0,30 NFU | ≤ 2 NFU | within limit |
Frequently asked questions
Is tap water in Le Controis-en-Sologne safe to drink?
The latest official test failed at least one quality requirement.
How high are PFAS levels in Le Controis-en-Sologne's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at 0.015 µg/L. The EU limit is 0.1 µg/L, so this water is at 15 % of the limit. (below the EU limit)
Does the water in Le Controis-en-Sologne 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 0.0018 µg/L stays below.
How hard is the water in Le Controis-en-Sologne?
The water hardness in Le Controis-en-Sologne is 18.3 °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=41059
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 28 August 2026
- Supply networks
- CONTRES, MONTHOU SUR BIEVRE, PONTLEVOY, SAMBIN
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.