Removal of bacterial indicators of fecal contamination in urban stormwater using a natural riparian buffer

M. Casteel, G. Bartow, S. R. Taylor & P. Sweetland
Little information is available on the ability of naturally-occurring riparian buffers to remove waterborne microbes from urban stormwater runoff. In the present study, bacterial indicators of fecal contamination were quantified in stormwater before and after intentional diversion to a natural riparian buffer (RB) adjacent to a lake located in the City of San Francisco, California. Analysis of lake water showed that levels of Escherichia coli and total coliforms increased significantly during storm events, indicating the...