MCGREGOR WWTP - Secondary Wastewater Treatment in McGregor, Iowa

MCGREGOR WWTP is a municipal wastewater treatment facility located in McGregor, Iowa, along Chinquapin Ridge Trail. The plant serves a population of approximately 971 residents in this small community within Clayton County. The plant provides secondary treatment, which is the standard level required under the U.S. Clean Water Act for municipal wastewater facilities. With a designed capacity of 567.81 m³/day and an average discharge volume of 454.25 m³/day, the plant operates at about 80% of its capacity, indicating consistent treatment demand. The treated effluent is discharged into a local water body that ultimately drains into the Mississippi River, a major waterway that flows into the Gulf of Mexico. The plant plays a key role in protecting downstream water quality and aquatic ecosystems in the Upper Mississippi River basin.

The plant's discharge enters a tributary of the Mississippi River, which flows southward through the Midwest and into the Gulf of Mexico. The Upper Mississippi River supports diverse aquatic life, including fish and migratory birds, and is an important corridor for navigation and recreation. The plant's secondary treatment helps reduce nutrient and pollutant loads, contributing to the health of this major river system.