LARCHWOOD STL Wastewater Treatment Plant, Lyon County, Iowa

LARCHWOOD STL is a municipal wastewater treatment plant located in Sioux Township, Lyon County, Iowa, United States. The facility serves a small population of 788 residents, providing essential sanitation services for the rural community. The plant operates with secondary treatment, which is the standard level required under the U.S. Clean Water Act for municipal wastewater facilities. Secondary treatment typically involves biological processes to remove organic matter and suspended solids. The plant has a designed capacity of 238.48 volume units and a discharge volume of 238.48, indicating full utilization of its capacity. The treated effluent is discharged into local water bodies that drain into the Missouri River basin, eventually reaching the Mississippi River and the Gulf of Mexico. The plant plays a role in protecting downstream water quality and aquatic ecosystems in the region.

The plant discharges into local streams within the Missouri River watershed, which flows into the Mississippi River and ultimately the Gulf of Mexico. The surrounding area is primarily agricultural, and the plant helps reduce nutrient and pollutant loads that could impact downstream water quality and aquatic life.