Inside Philadelphia's New Water Management System

This infographic explains the new green techniques that will revise the way Philadelphia catches and processes stormwater.

1 minute read

August 31, 2011, 7:00 AM PDT

By Nate Berg


"Cities can spend billions maintaining and upgrading this antiquated gray infrastructure -- or they can follow Philadelphia's lead and turn instead to green infrastructure. The principle is simple: instead of struggling to cope with the volume of water rushing through the sewers, prevent it from getting there in the first place by capturing it and filtering it slowly and naturally through the soil."

The city plans to make on third of its surfaces more permeable to water over the next 25 years.

Friday, August 26, 2011 in OnEarth Magazine

Young Professional

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban and Environmental Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban and Environmental Planner

Get top-rated, practical training for planners

"Planetizen federal action tracker" logo superimposed over black and white image of US Capitol dome.

Planetizen Federal Action Tracker

A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

September 16, 2026 - Zachary Whalen

Passengers board an Amtrak train under a cloudy sky.

Amtrak, CN end decades-long dispute with eight-year agreement

The new operating agreement establishes an updated framework for the companies to work together, including processes to resolve disputes.

September 18, 2026 - Mass Transit

The Gross Reservoir, a large body of water surrounded by trees and mountains.

Judges permit Denver to divert 77,000 acre feet from the Colorado River for reservoir expansion

Overuse and climate change have caused the Colorado River’s water levels to plummet.

September 18, 2026 - Inside Climate News

Railroad tracks in Idaho passing a home by a river.

Idaho may see an 18% drop in federal surface transit funding — the largest estimated cut in the US

Transit systems in rural communities are much more reliant on federal funding to provide their services.

45 minutes ago - Grist

A Florida family with their belongings in a wagon walks past a destroyed storm after a hurricane.

How ‘post-disaster gentrification’ alters neighborhoods after natural calamities

After hurricanes, fires or other calamities, the original residents of a community are often replaced by younger, wealthier residents.

1 hour ago - Inside Climate News

A person crossing a street under hanging traffic lights in Maryland.

Maryland local governments examine if they should have more power to raise property taxes

Maryland’s housing market is out of reach for the majority of moderate-income residents.

2 hours ago - Baltimore Sun