Urban Runoff
Full Description (pdf)
"The most recent National Water Quality Inventory reports that runoff from urbanized areas is the leading source of water quality impairments to surveyed estuaries and the third-largest source of impairments to surveyed lakes."
Taken from the U.S. Environmental Protection Agency
EPA 841-F-03-003
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"In urban and suburban areas, much of the land surface is covered
by buildings and pavement, which do not allow rain and snowmelt
to soak into the ground. Instead, most developed areas rely on storm
drains to carry large amounts of runoff from roofs and paved areas to
nearby waterways. The stormwater runoff carries pollutants such as oil, dirt, chemicals, and lawn fertilizers directly to streams and rivers, where they seriously harm water quality.
To protect surface water quality and groundwater resources, development should be designed and built to minimize increases in runoff."
Taken from the U.S. Environmental Protection Agency
EPA 841-F-03-003

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