Collinwood Lagoon Wastewater Treatment Plant, Wayne County, Tennessee

Collinwood Lagoon is a wastewater treatment facility located in Wayne County, Tennessee, within the Middle Tennessee region of the United States. The plant serves a small population of approximately 1,040 residents, reflecting its role as a community-scale infrastructure asset in a rural setting. The facility provides secondary treatment, which is the standard level required under the U.S. Clean Water Act for municipal wastewater plants. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids. The plant has a designed capacity of 378.54 volume units and currently handles a discharge volume of 302.83, indicating operational headroom. Treated effluent from Collinwood Lagoon is discharged into local waterways that ultimately drain into the Tennessee River system, a major tributary of the Ohio and Mississippi Rivers. This watershed supports diverse aquatic life and provides water resources for communities downstream. The plant's operation helps protect water quality in this ecologically important basin.

The plant discharges into the Tennessee River basin, which flows through the southeastern United States before joining the Ohio River and eventually the Mississippi River. This watershed supports a variety of fish and wildlife, including several species of freshwater mussels and migratory birds. The secondary treatment process reduces pollutant loads, helping to maintain the ecological health of downstream waters.