Chemical and biological products have been intentionally introduced into water bodies as aquatic plant herbicides, algicides, molluscicides, larvicides, fungicides and veterinary drugs. In Brazil these activities are regulated by different governmental agencies, which creates certain difficulties related to their control and management. This overview was conducted to evaluate the necessity of use and the Brazilian federal legislation related to this class of products, as well as to demonstrate the main origins of these demands and the legislative problems which often underestimate the risks of their uses to human and environmental health.
Herbicides; Algicides; Vector control; Aquaculture; Aquatic weeds