ALTA WWTP - Secondary Wastewater Treatment Plant in Alta, Iowa

ALTA WWTP is a municipal wastewater treatment facility located on West 7th Street in Alta, Buena Vista County, Iowa. The plant serves a population of approximately 1,865 residents and operates under the regulatory framework of the United States Clean Water Act, which requires secondary treatment for municipal discharges. The plant provides secondary treatment, a standard level that removes biodegradable organic matter and suspended solids. With a designed capacity of 2,142.54 thousand gallons per day and an average discharge volume of 643.52 thousand gallons per day, the facility operates well within its capacity. The treated effluent is discharged into a local water body, contributing to the Upper Mississippi River Basin. The plant's operations help protect downstream water quality and aquatic ecosystems in the region.

ALTA WWTP discharges into a local stream that flows into the Little Sioux River, a tributary of the Missouri River, which ultimately drains into the Mississippi River and the Gulf of Mexico. The plant's secondary treatment reduces nutrient loads, helping to mitigate downstream eutrophication in the Gulf of Mexico's hypoxic zone.