Manilla WWTP - Secondary Treatment Plant in Manilla, Iowa

Manilla WWTP is a municipal wastewater treatment facility located in Manilla, Iowa, within Crawford County. The plant serves a small population of around 898 residents, providing secondary treatment to meet state and federal water quality standards. As a secondary treatment plant, Manilla WWTP utilizes biological processes to reduce organic matter and suspended solids. The plant has a designed capacity of 378.54 megaliters per year and currently discharges 302.83 megaliters annually. It operates under the U.S. Clean Water Act, with permits issued by the Iowa Department of Natural Resources to ensure compliance with effluent limits. The treated effluent is discharged into local streams that flow into the Nishnabotny River, a tributary of the Missouri River. This watershed supports diverse aquatic life and is important for regional agriculture and recreation. The plant's operations help protect downstream water quality in the Missouri River basin.

Manilla WWTP discharges into local waterways that drain into the Nishnabotny River, which flows into the Missouri River and ultimately the Mississippi River. The receiving waters support a variety of fish and wildlife, including species that rely on clean water for spawning and habitat. The plant's secondary treatment helps reduce nutrient loading and organic pollution, contributing to the ecological health of the Missouri River basin.