Overview
Twain Harte WWTF serves approximately 12,648 residents in Calaveras County, California. The plant operates under U.S. Clean Water Act regulations, ensuring treated wastewater meets state and federal standards before discharge.
Twain Harte WWTF is a municipal wastewater treatment facility located in Calaveras County, California, serving a population of about 12,648. The plant is situated inland, away from coastal areas, and plays a key role in managing wastewater for the Twain Harte community and surrounding areas. As a facility in the United States, the plant operates under the Clean Water Act, with National Pollutant Discharge Elimination System (NPDES) permits issued by the California State Water Resources Control Board. The treated effluent is discharged into local waterways that ultimately drain into the Stanislaus River basin, part of the larger San Joaquin River system. This watershed supports diverse aquatic life and provides water for agricultural and recreational uses downstream.
Environmental context
The plant discharges into the Stanislaus River watershed, which flows into the San Joaquin River and eventually reaches the Sacramento-San Joaquin Delta and San Francisco Bay. This river system supports critical habitats for fish species such as Chinook salmon and steelhead trout, and is an important migratory corridor. The region's Mediterranean climate with seasonal rainfall influences flow patterns and water quality management.
Frequently asked questions
Twain Harte WWTF is located in Calaveras County, California, United States, near Forest Route 6N58.
The plant serves approximately 12,648 residents in the Twain Harte area and surrounding communities in Calaveras County.
Treated wastewater from the plant is discharged into local waterways that flow into the Stanislaus River basin, part of the larger San Joaquin River system.
As a U.S. facility, Twain Harte WWTF operates under the Clean Water Act and is regulated by an NPDES permit issued by the California State Water Resources Control Board.
For a population of this size, secondary treatment is typically required under the Clean Water Act, which includes biological processes to reduce organic matter and suspended solids.
Nearby plants