This research work was aimed at characterizing the affluents and effluents and qualifing the environmental impact promoted in the water resources. The research was realized in four swine feeding systems in Jaboticabal-SP, during 2003 and 2004. The affluents and effluents of livestock and treatment systems were analyzed monthly. The nitrate had a maximum concentration of 1.560mg L-1 NO3-N and the total phosphorus was 92mg L-1 de P. A concentration of 48.300mg L-1 was verified to OCD. Excepting temperature and pH, all parameters showed values up standard legislation to be disposed in superficial water resources. Interventions like the feeding management, the water use, and the best practice in effluent treatment systems could contribute to the reduction in the impact of effluents.
environmental legislation; swines; water classification; water resources
