Overview
Emmett Sewage Lagoon serves approximately 6,557 residents in Emmett, Idaho, as part of the city's municipal wastewater infrastructure. The plant operates under the US Clean Water Act framework.
Emmett Sewage Lagoon is a wastewater treatment facility located at 1473 Cascade Road in Emmett, Gem County, Idaho. It serves a population of roughly 6,557 people, making it a small-to-medium agglomeration in the western United States. The plant is situated inland, far from coastal waters, and its operations are governed by state and federal environmental regulations. As a lagoon-based system, the plant likely provides secondary treatment through natural biological processes, which is typical for smaller communities in Idaho. The facility operates under the US Clean Water Act, administered by the Idaho Department of Environmental Quality, which issues National Pollutant Discharge Elimination System (NPDES) permits. These permits set effluent limits to protect water quality in the receiving water body. The treated effluent from Emmett Sewage Lagoon discharges into a local waterway that ultimately drains into the Payette River system, a tributary of the Snake River. The Snake River flows into the Columbia River, which reaches the Pacific Ocean. The plant plays a key role in protecting the Payette River watershed from nutrient and pathogen pollution, supporting aquatic life and downstream water quality.
Environmental context
The plant's discharge enters a local tributary that flows into the Payette River, a major waterway in southwestern Idaho. The Payette River joins the Snake River, which is a critical habitat for salmon and steelhead trout. The watershed supports diverse aquatic ecosystems and is used for irrigation and recreation. Protecting this river system from nutrient loading and pathogens is essential for maintaining water quality and ecological health in the region.
Frequently asked questions
Emmett Sewage Lagoon is located at 1473 Cascade Road in Emmett, Gem County, Idaho, United States.
The plant serves approximately 6,557 residents in the Emmett area.
The treated effluent is discharged into a local tributary that flows into the Payette River, part of the Snake River basin.
The plant operates under the US Clean Water Act and is regulated by the Idaho Department of Environmental Quality through an NPDES permit, which sets effluent limits to protect water quality.
For small communities in Idaho, lagoon systems providing secondary treatment are common. These systems use natural biological processes to reduce organic matter and pathogens before discharge.
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