Avaliação da qualidade da água do Rio Sorocaba por meio de alguns grupos bacterianos indicadores de contaminação de origem fecal

Abstract

The level of organic contamination of the Sorocaba River was analysed in four collecting places: Itupararanga Dam, Pinheiros Bridge, Pinga — Pinga Bridge and São Bento Park upstream the SAAE collecting station. Between February and October 1995 four samples of water were collected in each of these places. The sanitary characterization of the water was determined by the following parameters: dissolved oxygen, pH, conductivity, temperature, heterotrophic bacteria, total coliforms, fecal coliforms, and fecal streptococci. The water collected within the urban perimeter showed alarming levels of contamination. The detected level of contamination proves the urgence of a sewage farm in our city