San Gabriel WWTP - Georgetown, Texas Wastewater Treatment Plant

San Gabriel WWTP is a municipal wastewater treatment facility located in Georgetown, Texas, within Williamson County. The plant serves a population of around 14,600 residents, placing it in the small-to-medium agglomeration category for US wastewater infrastructure. As a US facility, the plant operates under the National Pollutant Discharge Elimination System (NPDES) permit program established by the Clean Water Act. This regulatory framework requires permits for all point source discharges into surface waters, with treatment standards based on the receiving water body's designated uses. The plant's treated effluent ultimately discharges into the San Gabriel River watershed, which flows southeast through Texas to the Gulf of Mexico. The San Gabriel River supports diverse aquatic life and provides water for municipal, agricultural, and recreational uses downstream. The plant's operations are important for protecting water quality in this regional river system.

The San Gabriel WWTP discharges into the San Gabriel River watershed, which flows into the Brazos River and eventually reaches the Gulf of Mexico. The river supports a variety of fish and wildlife species, including several native freshwater mussels and fish. Protecting water quality in this system is important for maintaining ecological health and recreational uses such as fishing and boating.