The Hyperion Plant currently treats most of the wastewater generated in the City of Los Angeles as well as several other cities and unincorporated areas in the Los Angeles Metropolitan area. The completion of this major renovation and expansion program will be the culmination of two decades of effort on the local, state, and federal level to upgrade the aging Hyperion Plant.
The Hyperion Plant occupies a 144-acre site adjacent to Santa Monica Bay, near Los Angeles International Airport. The original plant was completed in 1949 and expanded in 1956 with an average flow of 400 million gallons per day (mgd). All wastewater receives primary treatment and 100 mgd receives secondary treatment.
Dean Ryan currently assists the City with the permitting process and evaluation of various alternatives to provide for the required treatment capacity at the Hyperion Plant. This project is designed to provide a comprehensive renovation of the entire facility, along with the expansion of the site's secondary treatment capacity. The net effect will be a reduction in the discharge of pollutants to Santa Monica Bay, despite the fact that there is a large increase in the total amount of wastewater treated.