ADIN WWTF - Secondary Wastewater Treatment in Adin, California

ADIN WWTF is a municipal wastewater treatment facility located on Ash Street in Adin, a small community in Modoc County, California. The plant serves a population of approximately 300 residents, reflecting the rural character of the area. The plant provides secondary treatment, which is the standard level required under the U.S. Clean Water Act for municipal wastewater facilities. With a designed capacity of 113.56 megaliters per year and an annual discharge volume of 75.71 megaliters, the plant operates below its capacity, indicating adequate headroom for current demand. The treated effluent is discharged into the local watershed, which ultimately drains into the Pit River system and then to the Sacramento River. This waterway supports diverse aquatic life and is part of the larger Sacramento-San Joaquin River Delta ecosystem, which is ecologically significant for fish migration and water quality.

ADIN WWTF discharges into the Pit River watershed, which flows into the Sacramento River and eventually reaches the Sacramento-San Joaquin River Delta and San Francisco Bay. The receiving waters support a variety of fish species, including salmon and trout, and are important for regional water quality and habitat connectivity.