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SWSI Phase 2 Technical Roundtable Water Conservation and Efficiency Table 1 Active Conservation Matrix ~ ~ ~~~~~ ~~~i i ~•~ ~ r i ; ~ i ~• ,~ , ,~ i ~~~~ + - ~ 1 Plumbing codes nla* 2,5% 4,5% 6% $0 Fixturestandardsfrom National Energy PolicyAct 2 Metering nla* 4% 4% 4% $100 Leak detection (6.5%) (8,5%) (10%) 3 All of the above (Level 2) nla* 5% 8% 10% $500 Education (7,5%) (12,5%) (16%) Rebates for toilets and washers Audits: residential and commercial Landscape audits Increasing rate structure 4 All of the above (Level 3) nla* 10% 15% 20% $1,000 Steep pricing rate and surcharges (12,5%) (19.5%) (26%) Rebate for landscape changes Turf replacement & restrictions Rebates for irrigation sensors & controllers Sub-metering of master-meter properties Fixture retrofit upon sale of property Ordinance eliminating single-pass cooling 5 All of the above (Level 4) nla* 15% 25% 35% $2,000 Replacement of all inefficient water fixtures & appliances (17,5%) (29.5%) (41 %) Eliminate leakage by all customers Eliminate high-water using landscape Install non-water using urinals by non-residential customers nla* The 2000 level of water use implicit in the county gpcd values includes "current" conservation savings. The percent reduction indicated for Levels 2 through 5 is "above and beyond" the Level 1 reduction; the cumulative percent reduction is shown in parentheses. Leve11 Water Conservation Savings: This level is defined as water savings that result f rom the impacts of plumbing codes, ordinances, and standards that improve the efficiency of water use. These conservation savings are sometimes termed "passive" savings because water utilities do not actively fund and implement the programs that produce these savings. These savings occur as new construction and remodeled buildings become more water efficient over time. In addition, landscaping ordinances contribute to these passive savings. Level 1 conservation is included in the SWSI baseline water demand forecast. Future improvements in water fixture technology may potentially result in additional savings if mandated by plumbing code. In contrast, water conservation savings resulting from utility-sponsored water conservation programs are referred to as "active" savings. The options included as potential f uture options f or SWSI in terms of M&I conservation, correspond to the diff erent levels of active conservation (Level 2 through 5) are described below. These levels of conservation are generalized and there may be hybrid programs that can cross levels also. Note that emergency conservation programs and short-term drought-response restrictions are not included among these long-term water conservation programs. Temporary drought restrictions include requests for voluntary demand reductions or ~• ~ DRAFT S:IMEETINGSITECHNICAL ROUNDTABLEITRT MEETING - SPECIFICIWATER EFFICIENCYISWSI WATER EFFICIENCY TRT BRIEFING.DOC