Ojai Valley SD WWTF - Weldons, California Wastewater Treatment Plant

Ojai Valley SD WWTF is a municipal wastewater treatment facility located in Weldons, Ventura County, California, serving a population of around 20,000. The plant is situated near the Ojai-Ventura Bike Path and plays a key role in managing wastewater for the local community. As a US-based facility, the plant 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. For a population of this scale, secondary treatment is typically required, with additional nutrient removal if discharging to sensitive waters. The plant's treated effluent likely discharges into the Ventura River watershed, which flows into the Pacific Ocean near Ventura. This coastal region supports diverse aquatic life and is an important migratory corridor for steelhead trout and other species. The plant's location within 50 km of the coast underscores the importance of effective treatment to protect marine ecosystems.

The plant's receiving waters are part of the Ventura River basin, which drains into the Pacific Ocean at Ventura Harbor. This coastal watershed supports sensitive habitats including riparian zones and estuarine areas that provide critical spawning and nursery grounds for fish. Effective wastewater treatment is essential to prevent nutrient loading and protect downstream marine biodiversity.