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Current Stormwater Hot Topic

New FEMA Floodplain Maps effective 12/20/2019

Swimming Pool Guidelines

The City of Round Rock works to prevent pollution of our creeks and rivers from stormwater and urban runoff through education and management.

What is stormwater runoff?
Stormwater runoff is water that flows after a rainfall. During rainstorms, water drains off driveways, parking lots and streets picking up pollutants while flowing to the storm sewer system. Once stormwater enters the storm sewer system of inlets, pipes or channels, it flows downstream to the nearest creek, lake or river.

What is the difference between the storm sewer system and sanitary sewer system?SW vs Sewer2
The water that goes down the sanitary sewer system (from sinks or toilets) flows to a wastewater treatment plant where it is treated and filtered prior to entering any water bodies.
The stormwater and urban runoff water that flows down driveways and streets and into the storm sewer system flows directly to our creeks, lakes and rivers. Anything that enters a storm sewer system is discharged untreated into the water bodies we use for swimming, fishing and providing drinking water.