The health protection while ensuring the access to safe drinking water to the entire population is one of the main objectives all over the world. In this regard, the European Union, through Directive 98/83/EC, sets the parameters and maximum allowable parametric values to ensure the quality of water intended for human consumption. The aim of this paper is to give an overview of the values established in the European Directive in comparison with other countries and organizations, such as the World Health Organization, based on toxicological justification, doing special mention to the case of pesticides, in which there is great difference between the parametric values set. It also presents a comparison with the values fixed by the Directive 91/414/EEC concerning maximum residue limits of pesticides in food, highlighting the importance of joining criteria.
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