Overview
Wilseyville STP is a secondary treatment plant serving 90 people in Hams, California. It discharges 26.50 volume units and has a designed capacity of 34.07 volume units.
Wilseyville STP is a municipal wastewater treatment facility located in Hams, Calaveras County, California. The plant serves a small population of 90 residents, reflecting its role in a rural community. It operates under the regulatory framework of the US Clean Water Act, which requires secondary treatment for municipal discharges to protect water quality. The plant provides secondary treatment, a standard biological process that removes organic matter and suspended solids. With a designed capacity of 34.07 volume units and a current discharge volume of 26.50 volume units, the facility operates below its capacity. As a small plant, it is subject to state-level NPDES permitting under the California State Water Resources Control Board. The treated effluent is discharged into a local water body within the San Joaquin River basin, which ultimately drains to the Sacramento-San Joaquin Delta and San Francisco Bay. The plant's operations help protect downstream aquatic ecosystems and support water quality in the region's sensitive watershed.
Environmental context
The plant discharges into a tributary of the San Joaquin River system, which flows through the Central Valley to the Sacramento-San Joaquin Delta and San Francisco Bay. This watershed supports diverse aquatic life, including salmon and steelhead trout, and is an important migratory corridor. The plant's secondary treatment helps reduce nutrient and pollutant loads to the downstream environment.
Frequently asked questions
Wilseyville STP is located at 5157 Blue Mountain Road, Hams, Calaveras County, California, 95257, United States.
The plant serves a small population of 90 residents in the Hams area.
Wilseyville STP provides secondary treatment, which involves biological processes to remove organic matter and suspended solids from wastewater.
As a municipal wastewater plant in the United States, Wilseyville STP operates under the Clean Water Act, which requires secondary treatment for discharges to surface waters. The plant is subject to NPDES permitting through the California State Water Resources Control Board.
For very small populations like 90 people, package plants or small-scale secondary treatment systems are common. These are designed to meet secondary treatment standards under the Clean Water Act and are often permitted under general NPDES permits for small flows.
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