Drinking water quality inperi-urban area in the Metropolitan Region of São Paulo - Brazil - Razzolini, Maria Tereza Pepe; Günther, Wanda Maria Risso; Peternella, Francisca Alzira dos Santos; Martone-Rocha, Solange; Bastos, Veridiana Karmann; Santos, Thaís Filomena da Silva; Cardoso, Maria Regina Alves (International Symposium on Health-Related Water Microbiology, 2009)