What is stormwater runoff?
Stormwater runoff is the water that flows off roofs, driveways, sidewalks, parking lots, streets and other impervious surfaces during rainstorms and when snow melts. Instead of being absorbed into the ground, it flows into ditches, culverts, detention ponds, and storm drains. Stormwater runoff then collects and dissolves harmful pollutants carrying them into the creeks and streams. Since stormwater runoff does not receive any treatment before entering the creeks and streams, it poses a threat to humans, wildlife, and water quality.

Show All Answers

1. What is stormwater runoff?
2. Why are the stormwater and sanitary systems separate?
3. What is non-point source pollution?
4. What can residents do to help improve stormwater quality?
5. What is impervious surface?
6. What is a MS4?
7. What is an illicit discharge?