Fluoride is regulated as a chemical parameter in drinking water. In Spain, Royal Decree 3/2023 sets a parametric value of 1.5 mg/L, aligned with Directive (EU) 2020/2184. WHO uses 1.5 mg/L as its guideline value. Specific requirements outside the EU must be reviewed country by country.
Consequences of exceeding the parametric value
In Spain and the EU, exceeding the parametric value requires application of the framework for health classification, notification, risk assessment and corrective measures established by the regulations and the competent authority. It should not be claimed that every exceedance automatically entails identical restrictions.
Treatment and monitoring
Under this Spain/EU framework, the operator must verify final water quality and ensure that corrective measures do not adversely affect other parameters. Installing a treatment system does not remove self-monitoring and reporting obligations.
Official sources
- Royal Decree 3/2023 (Official State Gazette)
- Directive (EU) 2020/2184 (EUR-Lex)
- World Health Organization — Water, sanitation and hygiene
This content does not constitute regulatory advice for countries outside the EU: the specific applicable legislation must be checked in each case.