How Do Storm Sewers Work?
Rainwater and water from vehicle washing and over-irrigation flow into storm drains located in parking lots, streets, and gutters. These drains are connected through a series of underground pipes that carry water directly to our rivers, lakes, and streams.
Unlike the sanitary sewer that carries water from the drains in your home to the wastewater treatment plant, the storm sewer system carries untreated water straight to the river. Everything that goes into a storm drain is discharged into our waterways.