In April 2010, the United States EPA announced performance standards requiring 90 percent on-site retention of rainwater runoff from new development in Washington, DC.
"While that target may achieve a reduction in the potential pollutant load to a stream by 90%, additional benefits can be achieved if we follow the progression of scientific learning to the next logical step,” states Jim Dumont, Engineering Applications Authority for the British Columbia Inter-Governmental Partnership.
To learn more, click on British Columbia Moves Beyond 90% Rainfall Capture Target Proposed by United States EPA
News Release #2010-16
May 4, 2010