PATTERSON WWTP - Secondary Treatment Facility in Patterson, Iowa

PATTERSON WWTP is a municipal wastewater treatment plant located in Patterson, Iowa, United States. The facility serves a small population of 126 residents and operates as part of the local infrastructure managed by Madison County. The plant provides secondary treatment, which is the standard level required under the U.S. Clean Water Act for municipal facilities. With a designed capacity of 151.42 cubic meters per day and an average discharge volume of 113.56 cubic meters per day, the plant operates below its design capacity, indicating adequate headroom for current demand. The treated effluent is discharged into local waterways that ultimately drain into the Mississippi River basin. As a small inland facility, the plant plays a role in protecting local streams and groundwater quality in the agricultural region of central Iowa.

The plant discharges into receiving waters that flow through the Middle River watershed, part of the larger Mississippi River basin. This region supports diverse aquatic life and is important for migratory waterfowl. The treated effluent contributes to maintaining water quality in downstream ecosystems, including the Mississippi River and ultimately the Gulf of Mexico.