A cocktail of a number of pesticides was found in the water supply of 1 out of every 4 Brazilian cities between 2014 and 2017. In this period, supply companies in 1,396 municipalities detected the presence of all 27 pesticides which they are obligated to test for by law. Of these, 16 are classified by Brazil’s sanitary authority (Anvisa) as extremely or highly toxic, and 11 are associated with the development of chronic diseases such as cancer, fetal malformations, and hormonal and reproductive dysfunctions.
Among the cities with multiple contaminations are the state capitals São Paulo, Rio de Janeiro, Fortaleza, Manaus, Curitiba, Porto Alegre, Campo Grande, Cuiabá, Florianópolis, and Palmas.
The data is from the Ministry of Health and was obtained and analyzed in a joint investigation by Repórter Brasil, Agência Pública, and Swiss organization Public Eye. The information is part of a public database on drinking water quality, known as Sisagua, which gathers results from tests carried out by supply companies.