Calumet WWT - Secondary Wastewater Treatment Plant in Canadian County, Oklahoma

Calumet WWT is a municipal wastewater treatment facility located in Canadian County, Oklahoma, serving a small population of 560 residents. The plant provides secondary treatment, a standard level for small communities in the United States, ensuring that effluent meets basic quality standards before discharge. The plant has a designed capacity of 302.83 megaliters and currently treats 189.27 megaliters annually, indicating it operates below its full capacity. As a U.S. facility, it is subject to the Clean Water Act and National Pollutant Discharge Elimination System (NPDES) permits, which set effluent limits and monitoring requirements to protect water quality. The treated effluent is discharged into local waterways that drain into the Canadian River, part of the Arkansas-White-Red River basin. This river system supports diverse aquatic life and provides water for downstream communities and agriculture. The plant's location in inland Oklahoma means its discharge does not directly impact coastal environments.

The plant's discharge flows into tributaries of the Canadian River, which eventually joins the Arkansas River and then the Mississippi River, ultimately reaching the Gulf of Mexico. This watershed supports a variety of fish and wildlife, including species that rely on clean water for spawning and migration. The plant's secondary treatment helps reduce organic pollutants and suspended solids, protecting the ecological health of the river system.