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What is stormwater?

What is stormwater?

  • Water following a rain or snow storm that does not infiltrate the surface is called stormwater.
  • Stormwater has the potential to introduce new pollutants into surface water.
  • Stormwater runoff from construction sites can cause soil erosion to occur at a rate 20 times greater than normal land use situations.
  • U.S. Environmental Protection Agency regulates construction activity to reduce pollutant amounts.

Photo below: storm water causing sewer to overflow.

stormwater causing sewer to overflowImpacts
Ongoing development around the state contributes significantly to the growing impacts of stormwater. The buildings, parking lots, roads and other impervious surfaces associated with development lead to increased stormwater runoff. Stormwater runoff from construction sites can cause soil erosion to occur at a rate 20 times greater than normal land use situations. More

Regulations
The U.S. Environmental Protection Agency set regulations on construction activities to prevent contamination through a program known as the National Pollutant Discharge Elimination System. The Texas Commission on Environmental Quality operates this program under the Texas Pollutant Discharge Elimination System. More

Best Management Practices
Best management practices are intended to reduce the amount of pollutants contaminating surface water bodies. Best management practices for construction activities include erosion and sediment controls and stormwater management controls. More

Publications

Stormwater Management
Russell A. Persyn, Molly Griffin and Amy T. Williams