NEWDALE S_T FACILITY - Secondary Wastewater Treatment in Fremont County, Idaho

The NEWDALE S_T FACILITY is a municipal wastewater treatment plant located in Fremont County, Idaho, serving a small population of 323 residents. The plant operates under the regulatory framework of the U.S. Clean Water Act, which requires secondary treatment for municipal facilities of this scale to protect water quality. The plant provides secondary treatment, a biological process that removes organic matter and suspended solids. With a designed capacity of 185.48 cubic meters per day and a current discharge volume of 189.27 cubic meters per day, the facility operates near its design capacity. As a small agglomeration, it is subject to state-level NPDES permitting requirements that ensure compliance with effluent limits. The treated effluent is discharged into a local water body within the Upper Snake River basin, which ultimately drains into the Snake River and then the Columbia River system. This watershed supports diverse aquatic life and agricultural uses downstream, making proper treatment essential for maintaining water quality in the region.

The plant discharges into a tributary of the Snake River, which flows through southern Idaho and joins the Columbia River before reaching the Pacific Ocean. The Upper Snake River basin is ecologically sensitive, supporting native fish species such as cutthroat trout and providing irrigation water for agriculture. Effective secondary treatment helps protect these downstream ecosystems from nutrient pollution and organic loading.