News

Jul. 23, 2012 Seattle Street Sweeping Pilot Study

Now available on our website

This report summarizes the results of a one-year study sponsored in 2006 by Seattle Public Utilities (SPU) to evaluate whether street sweeping can significantly reduce the mass of pollutants discharged to area receiving water bodies while reducing the frequency of catch basin cleaning by removing sediment/debris from the street before it is transported in stormwater runoff. The investigation was jointly conducted by SPU and the Seattle Department of Transportation (SDOT).