The Promise of Permeable Pavement

by Jeanna Henry

Permeable pavement products can be used together with other green infrastructure.

When it rains, or as snow and ice melt, I frequently notice streams of water running off of my lawn, onto the street, into the storm sewer, and ultimately to a local waterway. I’ve also noticed an increase in flooded roadways and neighborhoods in my area even after a moderate to heavy rain. Unfortunately, stormwater is not just a localized issue, it is a problem across the country. As the saying goes: when it rains, it pours.

Flooding results in economic costs, human health impacts, and environmental damage in its wake. A major factor in more frequent flooding events is the increasing cover of impervious surfaces, such as roadways, parking lots and rooftops. Since these hard surfaces do not allow stormwater to naturally seep into the ground, most rainfall turns into runoff. With continuing development and growth, what options are available to minimize the effects of impervious surfaces? A more sustainable solution is to replace or substitute conventional pavements with permeable pavements – a green infrastructure tool.

Porous asphalt allows water to drain through it.

Porous asphalt allows water to drain through it.

Permeable pavements include pervious concrete, porous asphalt, and permeable interlocking pavers that mimic nature by capturing, infiltrating, treating, and/or storing rainwater where it falls. EPA considers these materials a Best Management Practice (BMP) for the management of stormwater runoff. Permeable pavements also provide multiple benefits beyond stormwater management and reducing localized flooding: they also have the ability to improve water quality; reduce the “heat island” effect in urban areas; reduce roadway hazards like ponding water and icing; create green jobs; and can increase the livability and resiliency of communities and increase property values when used with other green infrastructure. In fact, these benefits are already being realized throughout EPA’s Mid-Atlantic Region.

Permeable pavements along with green infrastructure are effective ways to address flooding as well as supporting green, sustainable growth. So the next time it rains, think about where permeable pavements and other types of green infrastructure could fit into your community.

 

About the author: Jeanna Henry joined EPA in 2000 as an Environmental Scientist. She currently works in the Water Protection Division focusing on stormwater management through the use of Green Infrastructure. Jeanna loves nothing more than spending time outdoors with family and friends hiking, kayaking, or spending a day at the beach.

 

 

 

 

 

Editor's Note: The views expressed here are intended to explain EPA policy. They do not change anyone's rights or obligations. You may share this post. However, please do not change the title or the content, or remove EPA’s identity as the author. If you do make substantive changes, please do not attribute the edited title or content to EPA or the author.

EPA's official web site is www.epa.gov. Some links on this page may redirect users from the EPA website to specific content on a non-EPA, third-party site. In doing so, EPA is directing you only to the specific content referenced at the time of publication, not to any other content that may appear on the same webpage or elsewhere on the third-party site, or be added at a later date.

EPA is providing this link for informational purposes only. EPA cannot attest to the accuracy of non-EPA information provided by any third-party sites or any other linked site. EPA does not endorse any non-government websites, companies, internet applications or any policies or information expressed therein.