IONE WWTF - Ione, California Wastewater Treatment Plant

IONE WWTF is a municipal wastewater treatment facility located in Ione, California, serving a population of approximately 7,466 residents. The plant is situated in Amador County, within the Sierra Nevada foothills region of California. As a facility serving a small community, IONE WWTF operates under the regulatory framework of the US Clean Water Act, which requires compliance with National Pollutant Discharge Elimination System (NPDES) permits. These permits set effluent limits to protect water quality in receiving water bodies. Plants of this scale typically employ secondary treatment or advanced treatment to meet state and federal standards. The plant's treated effluent is discharged into local waterways that ultimately drain into the Mokelumne River watershed, a tributary of the Sacramento-San Joaquin Delta. The Delta is a critical ecological and water supply resource for California, supporting diverse aquatic species and providing water for agriculture and urban use.

The IONE WWTF discharges into the Mokelumne River watershed, which flows into the Sacramento-San Joaquin Delta and eventually San Francisco Bay. This watershed supports important fish species such as Chinook salmon and steelhead trout. The Delta is a vital estuarine ecosystem that provides habitat for migratory birds and aquatic life, making water quality management crucial for ecological health.