Sierra Blanca WWTP - Secondary Treatment Facility in Sierra Blanca, Texas

Sierra Blanca WWTP is a municipal wastewater treatment facility located in Sierra Blanca, a small town in Hudspeth County, Texas. The plant serves a population of about 890 people, reflecting its role in a rural community in the western part of the state. The plant provides secondary treatment, which is the standard level required by the U.S. Clean Water Act for municipal wastewater. With a designed capacity of 605.66 megaliters per year and an actual discharge volume of 151.42 megaliters per year, the facility operates well below its capacity. Under the National Pollutant Discharge Elimination System (NPDES), plants of this scale are typically permitted by the Texas Commission on Environmental Quality (TCEQ) to ensure compliance with water quality standards. The treated effluent is discharged into the local watershed, which is part of the Rio Grande basin. The Rio Grande flows southeast to the Gulf of Mexico, providing critical water resources for agriculture and ecosystems in the arid region. The plant's operations help protect downstream water quality in this sensitive desert environment.

The plant discharges into the Rio Grande basin, which drains into the Gulf of Mexico. The Rio Grande is a vital water source in the Chihuahuan Desert, supporting riparian habitats and agricultural irrigation. Downstream ecosystems depend on maintained water quality, as the river is subject to low flows and high salinity. The plant's secondary treatment helps reduce organic pollutants and suspended solids, mitigating impacts on this arid watershed.