Water and Construction Sites: Stormwater runoff from construction
Site Factsheet pdf) can have a significant impact on water quality.
As stormwater flows over a construction site, it can pick up pollutants
like sediment, debris, and chemicals and transport these to a nearby
storm sewer system or directly to a river, lake, or coastal water.
Polluted stormwater runoff can harm or kill fish and other wildlife.
Sedimentation can destroy aquatic habitat, and high volumes of runoff
can cause stream bank erosion. Debris can clog waterways and potentially
reach the ocean where it can kill marine wildlife and impact habitat.
The NPDES stormwater
program requires construction site operators engaged in clearing,
grading, and excavating activities that disturb 1 acre or more,
including smaller sites in a larger common plan of development or
sale, to obtain coverage under an NPDES permit for their stormwater
discharges. For more information: