"Philadelphia's $2 billion plan to manage its storm water with green methods - porous pavement, green roofs, and a plethora of trees -- got the official nod Tuesday from the U.S. Environmental Protection Agency."

"EPA Administrator Lisa Jackson joined Mayor Nutter and other officials at the Fairmount Water Works to sign the agreement for a 25-year plan that has been described as one of the most innovative and ambitious in the nation.

It will transform not only how the city handles storm water - treating it as a resource instead of a waste product - but also how the city looks.

Greenery planted to soak up rainwater will also beautify streets, which could increase property values. Shaded homes will be cooler in summer, which could lower electricity bills. Air quality should improve."

Sandy Bauers reports for the Philadelphia Inquirer April 11, 2012. [2]