ENID STATE SCHOOL WWT - Enid, Oklahoma Wastewater Treatment Plant

ENID STATE SCHOOL WWT is a wastewater treatment facility located in Enid, Oklahoma, United States. The plant serves a small population of 300 and operates under the regulatory framework of the US Clean Water Act, which governs wastewater discharges through the National Pollutant Discharge Elimination System (NPDES). As a secondary treatment plant, it provides biological treatment to reduce organic matter and suspended solids before discharge. The plant's designed capacity is 378.54 megaliters, with an annual discharge volume of 113.56 megaliters, indicating it operates well below its capacity. Secondary treatment is standard for small communities in the US. The plant is likely permitted by the Oklahoma Department of Environmental Quality under the EPA's delegated authority. The treated effluent is discharged into local waterways that ultimately drain into the Arkansas River basin, which flows into the Mississippi River and then the Gulf of Mexico. The plant plays a role in protecting local water quality in the Great Plains region, where agriculture and oil and gas activities can impact water resources.

The plant discharges into the Arkansas River basin, which flows through Oklahoma and Arkansas before joining the Mississippi River and reaching the Gulf of Mexico. The downstream environment supports diverse aquatic life and is important for migratory birds in the Central Flyway. The region's semi-arid climate means water quality is critical for both ecological health and human uses such as irrigation and recreation.