Green City Clean Waters

With the "Green City, Clean Waters" initiative already underway, a recent grant from the U.S. EPA will help Philadelphia evaluate best practices for building and maintaing its urban watershed.
Jan 28, 2014   Triple Pundit
With cities across the country seeking to find innovative and economical solutions to problems caused by combined sewer systems, could Philly's popular Green City, Clean Waters program be a model worth copying?
Jun 11, 2012   National Geographic News