Milford STP - Secondary Wastewater Treatment Plant in Milford, Illinois

Milford STP is a municipal wastewater treatment facility located in Milford, Illinois, serving a population of approximately 1,512 residents. The plant is situated in Iroquois County and provides secondary treatment to meet state and federal water quality standards. The facility has a designed capacity of 757.08 cubic meters per day and operates at full capacity based on reported discharge volumes. As a secondary treatment plant, it utilizes biological processes to remove organic matter and suspended solids, complying with the US Clean Water Act requirements for publicly owned treatment works. The plant discharges treated effluent into local streams that drain into the Iroquois River, a tributary of the Kankakee River, which ultimately flows into the Illinois River and then the Mississippi River. This watershed supports diverse aquatic life and provides important habitat for fish and wildlife in east-central Illinois.

The plant discharges into the Iroquois River watershed, which flows into the Kankakee River and then the Illinois River, a major tributary of the Mississippi River. The receiving waters support a variety of fish species and provide critical habitat for migratory birds along the Mississippi Flyway. The region's agricultural landscape influences nutrient loading, making effective treatment essential for downstream water quality.