HOLLISTER WWT Wastewater Treatment Plant, Tillman County, Oklahoma

HOLLISTER WWT is a municipal wastewater treatment facility located in Tillman County, Oklahoma, United States. The plant serves a small community of approximately 60 people, reflecting its role in rural wastewater management within the state. The plant provides secondary treatment, a standard biological process that removes organic matter and suspended solids. With a designed capacity of 34.07 volume units and a discharge volume matching that figure, the facility operates at full capacity. Under the US Clean Water Act, such plants are regulated through the National Pollutant Discharge Elimination System (NPDES) permit program, which sets effluent limits to protect water quality. The treated effluent from HOLLISTER WWT discharges into local streams that ultimately flow into the Red River basin. This watershed drains into the Mississippi River and the Gulf of Mexico, supporting diverse aquatic ecosystems. The plant's operation helps maintain water quality in this agriculturally important region.

HOLLISTER WWT discharges into tributaries of the Red River, which flows through Oklahoma and Texas before reaching the Mississippi River and the Gulf of Mexico. The surrounding watershed supports agricultural activities and provides habitat for fish and migratory birds. The plant's secondary treatment reduces organic pollutants, helping to protect downstream water quality in this ecologically sensitive basin.