Up Against the Wall: A Gallery of Nature-Themed Graffiti and Street Art

It’s All Clean Water Under the Bridge

Philadelphia, US

Submitted by: Valerie Gwinner

Philadelphia is a city of rivers and bridges, but far from the mountains depicted in this image. Still, the city is trying to install green measures to clean up the waterways, including replacing pavement with more green spaces and porous surfaces to slow the flow of rainwater and reduce sewage overflow into the creeks and rivers.

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