Like every older American city -- and old cities across the globe -- Philadelphia faces the daunting challenge of maintaining and upgrading its aging, and at times outdated, water and sewer infrastructure. While national and state funding sources continue to decline, cities must find innovative ways to comply with increasing regulatory requirements to improve performance and meet regulatory standards. A new study by Jeffrey Featherstone, director of Temple's Center for Sustainable Communities and a professor of Community and Regional Planning, examines how Philadelphia is tackling the problem head-on through the city's "Green City Clean Waters Program (GCCW)."