The Basic Idea

Before urban development there were natural landscapes and native plants that cleaned and controlled stormwater. Rainfall traveled through soil, over rocks and into channels before returning to networks of drainage basins—rivers, lakes, and wetlands--or local Watersheds. This natural process was very important to water quality and the viability of the plants, people and wildlife depending on it.

With urbanization came impervious surfaces.

Rooftops, asphalt parking lots, concrete sidewalks, pipes, culverts, etc. These manufactured landscape features dramatically alter the hydrology of a region resulting in a series of negative consequences: poor water quality in watersheds and groundwater, flash flooding, erosion, destruction of aquatic habitats and overwhelmed water treatment facilities.

Stormwater management is a significant problem.

Permeable Interlocking Concrete Pavement (PICP) is a sustainable paving system engineered to help manage stormwater runoff and improve water quality. When stormwater falls on PICP , the water travels from the surface of the pavers into the stone filled gaps in between, then through layers of progressively larger pervious stone which acts as a filter for environmental toxins--similar to the natural system described above, like native plants in a rain garden. The PICP, or permeable paver base acts as a natural onsite water treatment plant, removing toxins from rainwater as it makes its way into the subsoil below. Because of the storage potential of PICP, rainfall from rooftops and other nearby hardcover surfaces can be incorporated into the system for additional environmental gain while also providing the means to resolve costly stormwater situations.

The Facts

Permeable Interlocking Concrete Pavement (PICP):

  • Creates a 100% pervious surface
  • Infiltrates 100 inches of Stormwater per hour
  • Holds 5x its own surface area of runoff
  • Decreases local flood potential
  • Filters out environmental toxins
  • Processes vehicular pollutants
  • Eliminates the need for detention and retention ponds
  • Connects to rain gardens and other sustainable building solutions

Properly Installed PICP:

  • Is recognized as a Best Management Practice (BMP)
  • Supports Low Impact Development (LID) principles
  • Meets U.S. Environmental Agency (EPA) performance criteria for BMP
  • Awards LEED and Green Globe points
  • Allows for local and National Watershed (CWP) Tax Credits and Grant Opportunities
  • Provides compliance with U.S. National Pollutant Discharge Elimination System (NPDES) regulations

​Be a part of the stormwater management and water quality solution: Go Permeable!