LANCASTER STP Wastewater Treatment Plant, Lancaster, Kentucky

LANCASTER STP is a municipal wastewater treatment facility located in Lancaster, Garrard County, Kentucky. It serves a population of about 5,900 people, placing it in the small-to-medium agglomeration category. The plant is situated inland, far from coastal waters, and its discharge ultimately contributes to the Kentucky River basin. As a U.S. facility, LANCASTER STP operates under the Clean Water Act, administered by the Kentucky Energy and Environment Cabinet. Plants of this scale typically employ secondary treatment as a minimum, with NPDES permits setting effluent limits to protect water quality. The specific treatment process and capacity details are not part of this record, but regulatory standards ensure compliance with federal and state requirements. The treated effluent from LANCASTER STP discharges into a local waterway that flows into the Kentucky River, a major tributary of the Ohio River. The Ohio River then joins the Mississippi River, which drains into the Gulf of Mexico. This downstream chain supports diverse aquatic life and provides drinking water for millions, making proper treatment essential for ecological and public health.

LANCASTER STP discharges into a local stream that feeds the Kentucky River, part of the Ohio River basin. The Kentucky River supports diverse fish and wildlife, including several species of freshwater mussels and migratory birds. Downstream, the Ohio River and Mississippi River system carries water to the Gulf of Mexico, where nutrient loading from upstream sources can contribute to hypoxic zones. Effective treatment at plants like LANCASTER STP helps reduce nutrient pollution and protect downstream ecosystems.