Geyla Mannor Wastewater Plant - Secondary Treatment Facility in Ranch House Estates, California

Geyla Mannor Wastewater Plant is a small municipal facility located in Ranch House Estates, Amador County, California. Serving a population of 225, it provides secondary treatment for the local community's wastewater needs. The plant is situated inland, away from coastal areas, and operates as part of the region's decentralized wastewater infrastructure. The plant employs secondary treatment processes, which are standard for small communities in the United States. With a designed capacity of 83.28 units and a daily discharge volume of 56.78 units, it operates below its capacity. Under the US Clean Water Act, such facilities are typically regulated through National Pollutant Discharge Elimination System (NPDES) permits issued by the California State Water Resources Control Board. The treated effluent from the plant is discharged into local waterways that ultimately drain into the Mokelumne River watershed, a tributary of the Sacramento-San Joaquin Delta. This delta system supports critical aquatic habitats and provides water for agriculture and urban areas in Northern California. The plant's secondary treatment helps protect downstream water quality in this ecologically sensitive region.

The plant discharges into the Mokelumne River watershed, which flows into the Sacramento-San Joaquin Delta and eventually San Francisco Bay. This delta ecosystem supports diverse aquatic life, including salmon and steelhead trout, and provides important migratory corridors for birds. The plant's secondary treatment helps reduce nutrient and pathogen loads, protecting downstream water quality in this ecologically significant region.