Westmoreland STP - Secondary Wastewater Treatment Plant in Westmoreland, Tennessee

Westmoreland STP is a municipal wastewater treatment plant located in Westmoreland, Sumner County, Tennessee. The facility serves a population of approximately 1,915 residents and operates as part of the region's water infrastructure. It is situated in Middle Tennessee, an inland area with no coastal discharge. The plant provides secondary treatment, which is the standard level required by the US Clean Water Act for municipal facilities. With a designed capacity of 757.08 million gallons per year and an annual discharge volume of 458.04 million gallons, the plant operates below its capacity. Under the National Pollutant Discharge Elimination System (NPDES), the plant must meet effluent limits to protect receiving waters. The treated effluent is discharged into local waterways that ultimately drain into the Cumberland River basin, a major tributary of the Ohio River and Mississippi River system. This watershed supports diverse aquatic life and provides drinking water for downstream communities. The plant's performance is critical to maintaining water quality in this ecologically important region.

The plant discharges into local streams that flow into the Cumberland River, which then joins the Ohio River and eventually the Mississippi River. This watershed supports a variety of fish and wildlife species, including several native mussels and game fish. The region's karst topography and agricultural land use make water quality protection essential for both ecological health and human use.