Impervious surfaces such as driveways, roads, parking lots, patios, and walkways do not allow rainwater to pass through the ... concrete, turf stones, or gravel. These options allow polluted rainwater ...

Rain gardens help reduce the amount of water flowing over land and into storm drains, which can prevent flooding and erosion.

Charleston County could soon limit the amount of impervious surfaces — like driveways, sidewalks and parking lots — that owners can have on their properties. The goal is to address the issue ...