Drinking water quality in Montval-sur-Loir
PFAS in drinking water
The total of 20 PFAS ("forever chemicals") was last measured at <SEUIL µg/L. The EU limit is 0.1 µg/L, so this water is at 0 % of the limit. (4 March 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 perfluoro tridecane sulfonique (PFTrDS) | <0,0015 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,0005 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,0015 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,0015 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,0015 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,001 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,001 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,0015 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,001 µg/L |
| Acide perfluoropentanoïque (PFPEA) | <0,0005 µg/L |
| Acide perfluorohexanoïque (PFHXA) | <0,001 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,0015 µg/L |
| Perfluorohexane sulfonate (PFHXS) | <0,0005 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,0015 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,001 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,001 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | <0,001 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,001 µg/L |
| Acide perfluoro-octanoïque (PFOA) | <0,0005 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | <0,0015 µg/L |
Water report for Montval-sur-Loir
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Official assessment
The authorities have not published an overall verdict for this water.
„Eau d'alimentation conforme aux normes en vigueur pour l'ensemble des paramètres mesurés. Les teneurs en plomb, cuivre et nickel ne valent que pour le point d'utilisation où elles ont été mesurées. En effet, compte tenu de l'influence du réseau de distribution d'eau (réseau intérieur et éventuellement,branchement public) sur la dissolution des métaux, ces valeurs ne sont pas représentatives de la qualité de l'eau pour l'ensemble des consommateurs du réseau de distribution. En cas de valeur proche ou supérieure à une des limites, il est conseillé d'assurer un écoulement d'eau, au robinet concerné, avant utilisation, voir de procéder à un changement de robinetterie.“
Show all 21 official measurements
| Parameter | Value | Limit | Status |
|---|---|---|---|
| Nitrate | <0,5 mg/L | ≤ 50 mg/L | within limit |
| Nitrite | <0,010 mg/L | ≤ 0.1 mg/L | within limit |
| Lead | 3.3 µg/L | ≤ 10 µg/L | within limit |
| Copper | 0.161 mg(Cu)/L | ≤ 2 mg(Cu)/L | within limit |
| Nickel | 3.6 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 | 0.3 µg/L | ≤ 50 µg/L | within limit |
| Uranium | <0,02 µg/L | ≤ 30 µg/L | within limit |
| Fluoride | 0.075 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 | 7.6 unité pH | 6.5–9 unité pH | within limit |
| Water hardness | 24.3 °f | no limit | informational |
| Electrical conductivity | 514 µS/cm | 200–1,100 µS/cm | within limit |
| Chloride | 14.9 mg/L | ≤ 250 mg/L | within limit |
| Sulphate | 13.4 mg/L | ≤ 250 mg/L | within limit |
| Sodium | 11.3 mg/L | ≤ 200 mg/L | within limit |
| Iron | 6 µg/L | ≤ 200 µg/L | within limit |
| Turbidity | <0,30 NFU | ≤ 2 NFU | within limit |
Frequently asked questions
Is tap water in Montval-sur-Loir safe to drink?
All the values shown here (8 June 2026) are within the legal limits, but the authorities have not published an overall verdict for this water.
How high are PFAS levels in Montval-sur-Loir's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at <SEUIL µg/L. The EU limit is 0.1 µg/L, so this water is at 0 % of the limit. (below the EU limit)
Does the water in Montval-sur-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 Montval-sur-Loir?
The water hardness in Montval-sur-Loir is 24.3 °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=72071
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 28 August 2026
- Supply networks
- MONTVAL
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.