Ironhouse WWTP - Contra Costa County, California Wastewater Treatment Plant

Ironhouse WWTP is a municipal wastewater treatment facility located in Contra Costa County, California, United States. The plant serves a population of approximately 40,000 residents, classifying it as a medium-sized agglomeration under US regulatory frameworks. As a US-based facility, Ironhouse WWTP 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. These permits set discharge limits to protect water quality. The plant's designed capacity is 1.00 million gallons per day, and it provides treatment appropriate for its service population. The treated effluent from Ironhouse WWTP is discharged into local waterways that ultimately drain into the Sacramento-San Joaquin River Delta and San Francisco Bay. This estuarine environment supports diverse aquatic life and is a critical habitat for migratory fish species. The plant's operations are essential for protecting downstream water quality in this ecologically sensitive region.

Ironhouse WWTP discharges into waterways feeding the Sacramento-San Joaquin River Delta, which flows into San Francisco Bay. This estuary supports a rich ecosystem, including salmon and steelhead trout, and is a vital stopover for migratory birds. The plant's treatment helps maintain water quality in this dynamic environment, which faces challenges from agricultural runoff and urban development.