Comparação entre os padrões de potabilidade nacional e internacionais quanto à presença de agrotóxicos

Abstract

The introduction of pesticides in aquatic environments can be constitutes one of the causes of compromising the quality of water for human consumption, since many of these substances are persistent in the environment, and are not efficiently removed by some water treatment technologies. This study sought to analyze the national and international laws of water potability regarding the presence of pesticides. For so, comparisons of water quality legislation for human consumption in the countries and territories considered in this study were carried out, in addition to the World Health Organization (WHO) Guidelines on contemplated pesticides. From this evaluation, it was found that the WHO Guidelines served as the main basis for most of the current standards in the countries studied. Large differences were also identified between countries in terms of the number of pesticides regulated and in relation to the maximum allowed values for most substances. The standards of many countries are somewhat outdated, for example, requiring monitoring of substances considered unnecessary by the WHO.