MINONK STP Wastewater Treatment Plant, Minonk, Illinois

MINONK STP is a municipal wastewater treatment facility located in Minonk, LaSalle County, Illinois. The plant serves a population of about 2,419 residents, typical of a small community in the Midwestern United States. It operates under the regulatory framework of the U.S. Clean Water Act, administered by the Illinois Environmental Protection Agency. As a small-scale facility, MINONK STP is expected to provide secondary treatment as a minimum standard under the National Pollutant Discharge Elimination System (NPDES) permit program. The plant's treatment process and capacity are designed to meet state and federal effluent guidelines to protect water quality in the receiving stream. The plant discharges into a local waterway that ultimately drains into the Illinois River, a major tributary of the Mississippi River. The Illinois River basin supports diverse aquatic life and is an important ecological corridor in the region. The plant's operations are critical for maintaining the health of downstream ecosystems and ensuring compliance with water quality standards.

MINONK STP discharges into a tributary of the Illinois River, which flows into the Mississippi River and eventually the Gulf of Mexico. The Illinois River basin supports diverse aquatic species and provides critical habitat for migratory birds. The plant's effluent must meet state water quality standards to protect this ecologically sensitive watershed from nutrient pollution and other contaminants.