Philly Tests Pervious Pavement

The Philadelphia Water Department (PWD) is using one of its major employee parking lots as a testing ground for various types of permeable pavement materials designed to prevent stormwater runoff from polluting local rivers and streams. Funded by the PWD and the U.S. Environmental Protection Agency (EPA), the project will help advance strategies under the city’s nationally renowned Green City, Clean Waters stormwater management plan.

The goal is to test and showcase up to six different types of permeable pavement, including multiple forms of pervious concrete, porous asphalt and permeable paver products.

 The project received extensive local media coverage coverage at a ribbon-cutting ceremony last week. Below is the segment that aired on the local CBS affiliate.

 The success of each material will be monitored closely for factors such as cost of installation, stability of the systems, permeability over time, maintenance requirements, and the ability to replicate it elsewhere. A review of how each type of material performs and reacts under the same conditions will allow PWD to determine its role for future projects around the city.

 Green City Clean Waters is the City’s $2 billion investment over the next 25 years that pledges to transform one-third of the City’s impervious surfaces in its combined sewer neighborhoods to green acres that manage the first inch of stormwater runoff. The plan is based on an adaptive management approach that will identify and maximize green practices that achieve the most efficient and cost-effective environmental goals.

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