EPA Regional Administrator Shawn M. Garvin today announced new performance standards for DC Stormwater. "This new permit includes a number of green performance measures for preventing stormwater, along with the pollutants and trash it carries, from washing into local waterways. Moreover, this builds on efforts the District has already undertaken and is a major step forward in reaching our goals for restoring the Anacostia River and Chesapeake Bay.”

Under the Clean Water Act, urbanized areas like the District are required by federal law to have permits covering their discharges.

see full announcement:

http://yosemite.epa.gov/opa/admpress.nsf/90829d899627a1d98525735900400c2b/ac714e4db1dd491c8525792000617a95!OpenDocument