Hydro WWT Wastewater Treatment Plant, Caddo County, Oklahoma

Hydro WWT is a municipal wastewater treatment facility located along US Historic 66 in Caddo County, Oklahoma. The plant serves a small population of 1,090 residents, reflecting the rural character of the region. It operates under the regulatory framework of the United States Clean Water Act, which governs wastewater discharges through the National Pollutant Discharge Elimination System (NPDES). The plant provides secondary treatment, a standard level for small communities in the US, which typically involves biological processes to reduce organic matter and suspended solids. The facility has a designed capacity of 435.32 units and currently discharges 454.25 units, indicating operation near its capacity. As an inland facility, it is not subject to coastal discharge regulations. The treated effluent from Hydro WWT is discharged into local waterways that ultimately drain into the Washita River basin, a tributary of the Red River. The Red River flows into the Mississippi River and eventually the Gulf of Mexico. The plant plays a role in protecting local water quality in the rural Oklahoma landscape.

Hydro WWT discharges into the Washita River basin, which flows into the Red River and then the Mississippi River, reaching the Gulf of Mexico. The surrounding area is characterized by agricultural land and small communities. The plant's secondary treatment helps reduce nutrient and organic pollutant loads, supporting aquatic life in the downstream rivers and contributing to the overall health of the Mississippi River watershed.