Lawrenceville STP Wastewater Treatment Plant, Lawrenceville, Illinois

Lawrenceville STP is a municipal wastewater treatment facility located in Lawrenceville, Illinois, serving a population of approximately 5,700. The plant is situated in the Wabash River basin, which ultimately drains to the Ohio River and then the Mississippi River. As a small to medium-sized facility, it plays a key role in protecting local water quality. Under the US Clean Water Act, wastewater treatment plants of this scale are typically required to meet secondary treatment standards through the National Pollutant Discharge Elimination System (NPDES) permitting program. The plant's treatment processes are designed to reduce organic pollutants and suspended solids before discharge, in compliance with state and federal regulations. The treated effluent from Lawrenceville STP enters the Wabash River watershed, which supports diverse aquatic life and provides habitat for fish species such as channel catfish and smallmouth bass. The river flows through agricultural and rural areas before joining the Ohio River, contributing to the overall health of the Mississippi River system.

Lawrenceville STP discharges into the Wabash River watershed, which flows into the Ohio River and eventually the Mississippi River. The Wabash River supports a variety of fish and wildlife, including freshwater mussels and migratory birds. The plant's operations help maintain water quality in this ecologically important river system, which is used for recreation and as a drinking water source downstream.