GRATON WWTF - Secondary Wastewater Treatment Plant in Graton, California

GRATON WWTF is a municipal wastewater treatment facility located in Graton, Sonoma County, California. The plant serves a small community of approximately 1,461 residents, providing secondary treatment to manage domestic wastewater from the area. The plant has a designed capacity of 529.96 thousand cubic meters per year and currently discharges 507.25 thousand cubic meters annually. As a secondary treatment facility, it meets the standard requirements under the US Clean Water Act, which mandates secondary treatment for municipal plants to protect water quality. The treated effluent is discharged into the local watershed, which ultimately drains into the Russian River and then to the Pacific Ocean. The plant plays a key role in protecting the Russian River ecosystem, which supports diverse aquatic life and is an important resource for recreation and agriculture in Sonoma County.

The plant discharges into the Russian River watershed, which flows through Sonoma County and empties into the Pacific Ocean near Jenner. The Russian River supports a variety of fish species, including steelhead trout and Chinook salmon, and its estuary provides critical habitat for migratory birds. The plant's secondary treatment helps reduce nutrient and pollutant loads to this sensitive river system.