Water Efficiency Updates, Trends, and New Technologies

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1 Water Efficiency Updates, Trends, and New Technologies Al Dietemann Acting Resource Conservation Manager Seattle Public Utilities September2008

2 Overview Seattle Area Water Use Trends Local Assistance Programs New Water Efficiency Resources Certification Organizations Efficient Product Requirements Emerging Technologies Additional References & Contact Info

3 Seattle and 17 wholesale water providers

4 Advantages of Water Efficiency Low-cost insurance for climate change and other uncertainties Low-cost way to manage the resource (environmental stewardship) Low-cost way for customers to manage their bills Low-cost way to save energy and reduce wastewater and drainage

5 Annual Seattle Water Demand Actual Annual 5-Year Moving Average Firm Yield 20 0 Annual MGD

6 WATER USE DECLINED 26% SINCE 1990 EVEN WHILE POPULATION INCREASED 16%

7 Total and Billed Annual Average Consumption Per Capita Seattle Regional Water System: Billed Consumption Total Consumption Per Average Single Family Use is 66 gallons per person/day Gallons per Person per Day

8 Cumulative Water Savings Since Transitory Savings 50 System Operation Improvements Conservation Programs 40 Plumbing Code Rate Impacts Reduction in Water Demand in MGD

9 Growth Facts Growth Facts Studies are showing that new homes are using 12-60% more water than their existing counterparts. By 2030 the US will have doubled its built environment Not just high-end homes Hot Water Waste Automatic irrigation Shower systems

10 Now More Than Ever Shortages becoming commonplace 40 States by even in the Great Lakes Infrastructure needs are serious ($533 billion) Growth continues with higher consumption Consumers becoming aware.of a crisis Climate change strategies need water efficiency Green Building becoming more blue

11 National Perspective Since 2000 Significant new product development Indoor plumbing & appliances Outdoor irrigation of landscapes Commercial & Industrial processes New water-efficiency programs & initiatives Water utilities incentive programs Federal product labeling program: WaterSense State legislation Green Building programs Business & consumer education Much attention in TV, newspapers, radio, etc.

12 Effective Strategies Price Signals (including wastewater) Provide rebate $ for equipment (HVAC, toilets & clothes washers) Partner with energy companies for hotwater savings (showerheads) Convincing Public Education

13 Local Financial and Technical Assistance Saving Water Partnership Rebates Puget Sound Energy and Seattle City Light Incentives Government Owned Projects Low Income Assistance

14 At Last a Product Label Program announced June, 2006 Voluntary program only Energy Star companion 20% more efficient Early labeling for toilets High efficiency Performance Tested

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17 Current Activity PROMOTE MARKET TRANSFORMATON Support EPA WaterSense Program Promote consumer awareness of labeled products SUPPORT RESEARCH ON WATER EFFICIENCY Continue filing Congressional Testimony Fund and initiate water efficiency research projects Identify new research needs among membership Partner with other organizations on research (PMI, IAPMO, ICC, ASPE, PHCC)

18 Current Activity SUPPORT EFFICIENT CODES AND STANDARDS ASME Plumbing Standards Committees IAPMO Codes Committees DOE Comments Clothes Washers SUPPORT GREEN BUILDING ACTIVITY LEED Water Efficiency Technical Advisory Group LEED 2009 Comment Letter NAHB Green Homes Program Green Globes ASHRAE

19 Some Reasons to Join the Alliance Networking with peers Speak as a single voice to policy makers Backed by a credible national authority Technical support and assistance Web based clearinghouse and references Access to Green building guidelines Offer your input to developing national guidelines, codes, & standards (LEED, EPA WaterSense, etc) New Product and program testing and research Leverage local programs with national partners

20 Green Building Numerous national green building programs USGBC LEED Program Green Globes-Green Building Initiative draft standard (comm l & residential above 3 stories) ASHRAE draft Standard for High Performance Buildings (comm l & residential above 3 stories) ASHRAE Standard 191 for Water Efficiency (yet to begin) NAHB draft National Green Building Standard (for homes) U.S. EPA WaterSense SM for New Homes

21 Emerging Technologies & Products for the Non-Residential Sectors Package graywater treatment systems On-premise laundry equipment Medical equipment Commercial food service equipment Plumbing products Heat Exchange Systems

22 In-building wastewater treatment for toilet flushing Package Graywater Treatment Systems: the to do list Field test the systems in real world applications Pontos AquaCycle system in California AQUS system in Colorado & New Mexico Brac system in Seattle.in order to answer savings, performance, & economic questions Achieve consensus resolving health code issues IAPMO task group being formed

23 Commercial Laundry Equipment Commercial (on-premise) Laundries reuse of wastewater Aquatex (recycling system) AquaRecycle (recycling system) Saves water & energy (3 to 10 million gallons per year)

24 Medical Air Compressor 40 HP replaced with 10 HP units Saved 6,050 gpd by air cooling Univ. of Wash Medical Center Medical Vacuums More energy efficient at partial loads, used 7500 gpd of water to generate vacuum

25 Medical & Health Care Medical (clinics, hospitals, physician & dentist offices) Steam sterilizer retrofits: Water-Mizer Mizer Savings: 200, ,000 gals/yr Ejector water modification savings: up to 1 million gals per year X-Ray film processor recycling units Savings: 500,000 to 1 mil gals/year BUT: Digital radiography taking over Dry vacuum systems

26 Emerging Products: Food Service Boilerless food steamers Boiler-based: use 400 gallons/day per compartment Estimate 200,000 installed steamers in U.S. Boilerless: 14 gallons/day per compartment Annual savings: 140,000 gallons/compartment Pre-rinse spray valves 100,000 hot water PRSVs in California Calif efficiency programs: Replaced 45,000+ hot water PRSVs Commercial dishwashers Waterless Woks Ice-makers Air-cooled more water and energy efficient Energy Star doesn t recognize water-cooled

27 Product Standards and Future Directions High-Efficiency Urinals (HEUs) Today s code maximum = 1.0-gal per flush (3.8L) HEU = 0.5 gallons (1.9L) or less High-Efficiency Toilet (HET) Specifics Todays Code max = 1.6 gallons per flush HET s = 1.28 gallons or less Dual Flush Pressure Assisted Flushometer Valves High Efficiency Faucet Aerators Todays Code = 1.6 gpm HEA s = 0.5 to 1.0 gpm

28 FUTURE DINOASURS? ROOF MOUNTED COOLING TOWERS REJECT WASTE HEAT BY EVAPORATING THOUSANDS OF GALLONS OF DRINKING WATER PER DAY

29 Exergy Concept Clearwater: buildings without cooling towers near-zero energy building Clearwater warm tank Residential and Commercial Buildings Clearwater cool tank Cool pipe Warm pipe Courtesy Don M. Iverson, P.E., LEED AP Coffman Engineers

30 Emerging Technologies & Products for the Non-Residential Sectors Package graywater treatment systems On-premise laundry equipment Medical equipment Commercial food service equipment Plumbing products Heat Exchange Systems

31 Additional Resources: WaterSense - A National Partnership to Save Water and Protect the Environment

32

33 Contact info: (206) Saving Water Partnership Seattle Public Utilities & Wholesale Water Providers

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