Overview
RIGBY STP serves Lewisville, Idaho, treating wastewater for approximately 3,945 residents. The plant operates under U.S. EPA and state regulations, discharging into the local watershed.
RIGBY STP is a municipal wastewater treatment plant located in Lewisville, Idaho, within Jefferson County. It serves a population of about 3,945 people, classifying it as a small to medium-sized facility in the region. As a U.S. plant, RIGBY STP must comply with the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the Idaho Department of Environmental Quality. For a community of this size, secondary treatment is typically required to meet effluent standards before discharge. The plant's treated effluent is released into the local watershed, which drains into the Snake River basin. This river system supports diverse aquatic life and agricultural activities, making proper treatment essential for protecting downstream water quality and ecosystem health.
Environmental context
RIGBY STP discharges into the Snake River basin, a major tributary of the Columbia River that ultimately reaches the Pacific Ocean. The watershed supports critical habitat for salmon and steelhead, as well as irrigation for agriculture. Effective wastewater treatment is vital to prevent nutrient loading and maintain water quality in this ecologically and economically important river system.
Frequently asked questions
RIGBY STP is located at East 500 North in Lewisville, Jefferson County, Idaho, United States.
RIGBY STP serves approximately 3,945 residents in the Lewisville area.
The plant discharges treated effluent into the local watershed, which flows into the Snake River basin and eventually the Columbia River.
RIGBY STP operates under the U.S. Clean Water Act and is regulated by an NPDES permit issued by the Idaho Department of Environmental Quality.
For a population of about 4,000, secondary treatment is standard under the Clean Water Act, which typically involves biological processes to reduce organic matter and suspended solids.
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