HANSEN STP Wastewater Treatment Plant, Kimberly, Idaho

HANSEN STP is a municipal wastewater treatment facility located in Kimberly, Idaho, within Twin Falls County. The plant serves a small community of about 1,144 residents, providing secondary treatment to manage domestic wastewater. As a facility in the United States, it operates under the regulatory framework of the Clean Water Act, which requires secondary treatment for municipal plants of this scale. The plant has a designed capacity of 473.18 volume units and a reported discharge volume of 280.12 volume units, indicating it operates below its maximum capacity. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids before discharge. The treated effluent from HANSEN STP is released into the local watershed, which ultimately drains into the Snake River basin. The Snake River flows through southern Idaho and into the Columbia River, supporting diverse aquatic life and agricultural irrigation. The plant's discharge contributes to maintaining water quality standards in this ecologically important region.

HANSEN STP discharges into the local watershed that feeds into the Snake River, a major tributary of the Columbia River. The Snake River basin supports a variety of fish species, including salmon and trout, and is crucial for irrigation in the arid region. The plant's secondary treatment helps protect downstream water quality and aquatic habitats.