AWWA MTC93044

The City of Beverly Hills (City) currently relies solely on water purchased from the Metropolitan Water District of Southern California (MWD) for its potable water supply. Prior to 1976, the City obtained a portion of its water supply from groundwater aquifers in the vicinity of the City. However, due to water quality problems and the cost of treatment of the groundwater supply, Beverly Hills switched exclusively to imported water to meet its potable water supply needs. Recent increases in the cost of MWD water has prompted the City to re-evaluate the use of groundwater as a supplemental water supply source. This paper reports on the results of a feasibility study completed in September 1990 which included a conceptual plan of a wellfield and treatment facilities necessary to develop a groundwater supply in Beverly Hills, California. Study elements are: 1) overview of geologic conditions and hydrogeologic properties; 2) analysis of groundwater quality; 3) wellfield configuration requirements; 4) comparison of alternative treatment processes (reverse osmosis, nanofiltration, electrodialysis reversal, oxidation-filtration, ion exchange, lime softening, air stripping, granular activated carbon, adsorption, and ozonation), 5) development of treatment and system facility needs, including brine disposal, and 6) delineation of groundwater development and treatment costs.