Walnut Branch WWTP - Seguin, Texas Wastewater Treatment Plant

Walnut Branch WWTP is a municipal wastewater treatment facility located in Seguin, Texas, within Guadalupe County. The plant serves a population of about 18,250 people, classifying it as a medium-sized agglomeration under typical US regulatory frameworks. As a US facility, Walnut Branch WWTP operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the Texas Commission on Environmental Quality (TCEQ). These permits set effluent limits to protect receiving water quality. The plant's treated effluent ultimately reaches the Guadalupe River, which flows into the San Antonio Bay and the Gulf of Mexico. This watershed supports diverse aquatic life and is an important resource for regional water supply and recreation. Proper treatment at Walnut Branch helps maintain the ecological health of the Guadalupe River and its downstream environments.

Walnut Branch WWTP discharges into the Guadalupe River basin, which drains into the San Antonio Bay and the Gulf of Mexico. The Guadalupe River supports a variety of fish and wildlife, including several species of freshwater mussels and migratory birds. The plant's operations are critical to maintaining water quality in this ecologically sensitive watershed, which also provides drinking water and recreational opportunities for downstream communities.