Ukiah WWTF - Municipal Wastewater Treatment Plant in Ukiah, California

Ukiah WWTF is a municipal wastewater treatment facility located in Ukiah, Mendocino County, California. Serving an estimated population of 21,353, the plant is part of the region's essential water infrastructure, handling domestic and commercial wastewater from the community. As a US facility, Ukiah WWTF operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the California State Water Resources Control Board or its regional board. For a plant serving this population size, secondary treatment is typically required, with additional nutrient controls if discharging to sensitive waters. The plant's treated effluent likely discharges to the Russian River watershed, which flows southward through Mendocino and Sonoma counties before reaching the Pacific Ocean via the Russian River estuary. The Russian River supports diverse aquatic life, including steelhead trout and Chinook salmon, and is an important water source for the region.

The Ukiah WWTF discharges into the Russian River watershed, which drains through Mendocino and Sonoma counties to the Pacific Ocean. The Russian River supports a diverse ecosystem, including threatened and endangered fish species such as coho salmon and steelhead trout. The river also provides drinking water and recreational opportunities for downstream communities, making water quality protection critical.