Ririe Sewage Lagoons - Secondary Wastewater Treatment in Ririe, Idaho

Ririe Sewage Lagoons is a municipal wastewater treatment facility located in Ririe, a small town in Jefferson County, Idaho. The plant serves a population of 656, reflecting its role in a rural community. As a secondary treatment plant, it provides biological treatment to reduce organic matter and suspended solids before discharge. The plant operates under the U.S. Clean Water Act, which requires National Pollutant Discharge Elimination System (NPDES) permits for all wastewater discharges. For small communities like Ririe, secondary treatment is the standard requirement, ensuring effluent meets federal water quality standards. The facility's designed capacity of 1,135.62 megaliters indicates it is sized to handle current and future flows, with current discharge volume at 757.08 megaliters. The treated effluent is discharged into a local water body, likely a tributary of the Snake River basin, which ultimately drains to the Columbia River and the Pacific Ocean. The plant's inland location, over 50 km from the coast, reduces direct marine impact but still requires careful management to protect freshwater ecosystems and downstream water quality.

The plant discharges into a local watercourse within the Snake River basin, which flows into the Columbia River and eventually reaches the Pacific Ocean. The surrounding watershed supports agricultural activities and diverse aquatic life, including salmonid species in the larger Columbia system. Proper treatment is essential to prevent nutrient loading and protect downstream habitats.