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7.A Page 84 - conjunction with the Bay Area Water Supply and Conservation Agency (BAWSCA). The LTRWSS investigates options to increase supply reliability under both normal and drought conditions. In addition to the LTRWSS, the City continues to study, develop, and implement additional water conservation programs, expanded recycled water use, transfers and exchanges (securing water from willing sellers inside and outside of the Hetch Hetchy water system), and development of groundwater and desalination to meet projected water needs and potential shortfalls through 2030. An example of a Redwood City conservation program under development is the City's Residential Water Meter Replacement Program. The program will replace all single family residential water meters within the City with Automated Metering Infrastructure (AMI). AMI is new metering technology that will increase conservation by improved water management; already in use by irrigation accounts in Redwood City (mostly apartment complexes, home owner associations, and commercial developments).AMI allows for hourly meter updates transmitted via radio waves to an internet connection allowing the City to evaluate real time water use based on a customer's "water budget." Leaks, overwatering, and other problems can be detected and corrected with great efficiency. This program resulted in 246-acre feet (or 80 million gallons) of water saved by irrigation customers in 2009. Over 20,000 new meters with AMI are scheduled to be installed through the Residential Water Meter Replacement Program for single family development over a five-year period beginning in 2011. Two studies validated the potential for significant water savings that could result from this expanded AMI project: • 1) Conversion of City's Landscape Meters to AMI 2) 2009 California Single Family Water Use Efficiency Study The data analyzed from the Redwood City studies show that the combined irrigation management and leak savings potential from existing single family homes that can be achieved through implementation of AM! is 1,443 acre feet per year(based on the number of single family accounts in the City). This accounts for 91%o of the year 2030 water demand deficit projected for the NGP, and it serves as a tangible goal for Redwood City water conservation planning. Offsetting potable water demand through the Residential Meter Replacement Program is just one of many future opportunities the City continues to study. The City is also working to identify and implement potential new water supply sources to include the expanded use of recycled water, above and beyond uses previously identified and already accounted for in the NGP. Projections and timelines for the expanded use of recycled water have not yet developed but will be included in the 2010-2011 UWMP. When new water supply sources —transfers and exchanges, groundwater, and expanded recycled water use— are combined with aggressive water conservation programs, as to be 'These documents will be provided to the City Council for their consideration of the AMI Residential Water Meter Replacement Program in late 2010; they're currently available for review at Public Works Services municipal corporation yard. Page 2 of 3