Longview Main WWTP - Municipal Wastewater Treatment in Longview, Texas

Longview Main WWTP is a municipal wastewater treatment facility located in Longview, Texas, serving an estimated population of 70,000. The plant is situated in Gregg County and operates as part of the city's wastewater infrastructure, handling domestic and industrial flows from the urban area. Under the U. S. Clean Water Act, plants of this scale are typically required to meet secondary treatment standards through the National Pollutant Discharge Elimination System (NPDES) permitting program. The Texas Commission on Environmental Quality (TCEQ) administers these permits, ensuring effluent limits protect water quality in receiving streams. The plant's treated effluent discharges into Grace Creek, a tributary of the Sabine River, which flows southward through Texas and Louisiana into Sabine Lake and eventually the Gulf of Mexico. This watershed supports diverse aquatic life and provides drinking water for downstream communities.

The plant discharges into Grace Creek, which flows into the Sabine River, a major waterway forming the border between Texas and Louisiana. The Sabine River empties into Sabine Lake, an estuary connected to the Gulf of Mexico. This watershed supports diverse fish and wildlife, including several species of freshwater mussels and migratory birds. Protecting water quality in this basin is critical for maintaining ecological health and recreational uses.