BLUE LAKE WWTF - Humboldt County, California Wastewater Treatment Plant

BLUE LAKE WWTF is a municipal wastewater treatment facility located on Old Dolly Varden Road in Humboldt County, California. It serves a small population of approximately 1,225 residents, classifying it as a small-scale treatment plant within the region. As a US facility, the plant operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permitting, typically administered by the California State Water Resources Control Board. The plant discharges treated wastewater into local waterways that ultimately drain to the Pacific Ocean via the Mad River or nearby coastal streams. Humboldt County's coastal environment supports diverse aquatic life, including salmon and steelhead trout, making proper treatment essential for protecting downstream ecosystems.

The plant's discharge enters a watershed that flows through Humboldt County's coastal redwood region before reaching the Pacific Ocean. This area supports critical habitats for anadromous fish species such as Chinook salmon and coho salmon, which rely on clean water for spawning and migration. The proximity to the coast means that treated effluent must meet stringent water quality standards to protect marine and estuarine environments.