After (2006) Before (2001) In 2005 the Philadelphia Water Department created the 1-acre Saylor Grove stormwater treatment wetland in a boggy area of the city’s Fairmount Park. The wetland serves as a public amenity while also treating a portion of the 70 million gallons of stormwater runoff generated by 156 acres of urban lands upstream of the park. U.S. Environmental Protection Agency Office of Water June 2017 EPA 841-R-16-112
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