AWWA ACE71012

In March 2002, Metropolitan Water District of Southern California initiated the Weymouth Oxidation Retrofit Program (ORP) to add ozone disinfection facilities to the F.E. Weymouth Water Treatment Plant. This program was tasked to incorporate Metropolitan's newly developed California Friendly® Landscape concepts and water conserving landscaping irrigation systems. After a series of site planning efforts conducted for Weymouth ORP, Metropolitan staff and consultants designed landscaping plans that utilized both smart irrigation systems and low water use California Friendly® Landscape along the western and northern boundaries of the plant. This paper outlines the lessons learned from designing Metropolitan's smart irrigation systems and incorporating water-conserving California Friendly® Landscape concepts into an existing 65-year old facility, and discusses the strategies for future landscape improvements at other Metropolitan facilities. Includes tables, figures, appendix.