WATER EFFICIENCY IN NEW HOME CONSTRUCTION

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2 WATER EFFICIENCY IN NEW HOME CONSTRUCTION 2

3 The most practical time to install water conserving devices is when the home is built. -California Single Family Home Water Use Efficiency Study April 20,2011 2

4 The California Water Crisis California is experiencing an extended period of severe to exceptional drought. 1,2 On May 18, the State Water Resources Control Board adopted a statewide water conservation approach that allows water suppliers to replace their prior state-assigned percentage target reduction with a localized Stress Test approach. The Stress Test is based on demonstrating at least a three-year water supply under extended drought conditions. LAKE OROVILLE CALIFORNIA DEPARTMENT OF WATER RESOURCES 3

5 Impact on the Building Industry Drought tolerant landscaping requirements for new construction. 2 Must install drip or micro spray irrigation types for landscaping requiring irrigation. 2 The California Energy Commission (CEC) may establish standards that improve the efficiency of water appliances, including toilets, urinals, and faucets. 2 Water rate increases to deter unnecessary water consumption. 2 Fines for water violations. 2 CHRISTIANE HOLMQUIST LANDSCAPE DESIGN Water rationing. 4 DROUGHT TOLERANT LANDSCAPING RANCHO SANTA FE

6 SoCal Single Family Water Use Average Daily Use by Geographic Region (gphd) Annual Indoor Outdoor Southern CA gphd = gallons per household per day Table 35: Comparison of water use by region California Single Family Home Water Use Efficiency Study 25 Indoor/Outdoor Split (Kgal and %) Outdoor 65% Indoor 35% Indoor Outdoor Figure 34: Relative indoor and outdoor annual water use for study group California Single Family Home Water Use Efficiency Study 25 5

7 CA Single Family Water Use: Indoor Other 2% Leaks 18% Bath 2% Toilet 21% Dish Washer 1% Faucet 19% Shower 20% Clothes Washer 17% Figure 39: End-use pie chart for all sites California Single Family Home Water Use Efficiency Study 22 6

8 INNOVATION IN NEW CONSTRUCTION 8

9 WaterSense labeled homes are independently certified to use 20% less water than typical new homes. 16 A Three Part Program The WaterSense New Home Specification has three topic areas: 1. Indoor water use. 2. Outdoor water use. 3. Resident and building management education. 19 A new home must be built by a WaterSense builder partner, certified by an EPA licensed certification provider, and meet all of the applicable criteria in the specification to become a WaterSense labeled new home. 19 8

10 New Homes: Saving Water = Saving Money The average household spends as much as $500 per year on their water and sewer bill and can save about $170 per year by installing waterefficient fixtures and appliances. 14 If homeowners with irrigation systems use a certified irrigation professional to perform regular maintenance, they can reduce irrigation water use by 15 percent or nearly 8,800 gallons of water annually. That's the equal to the amount of water used to take 500 showers. 14 A WaterSense labeled new home can help a family of four reduce their water use by as much as 29,000 gallons annually. 16,20 FOLSOM LAKE CALIFORNIA DEPARTMENT OF WATER RESOURCES 9

11 Indoor Water Technology Smart Home Monitoring Smart Shutoff Valve Leak Detection Push Button Recirculation Pump Thermostatic Shutoff Valve 10

12 Outdoor Water Technology Drought Tolerant Landscape Rain Sensor Municipality Supplied Recycled Water Smart Irrigation Controller Soil Moisture Sensor 11

13 Resources 1 Office of Govenor Edmund G. Brown Jr. Govenor Brown Declares Drought State of Emergency. The January, 2014 order was strengthened in April, 2014: Governor Brown Issues Executive Order to Redouble State Drought Actions. 2 Office of Govenor Edmund G. Brown Jr. Governor Brown Directs First Ever Statewide Mandatory Water Reductions. 3 Public Policy Institute of California. Just the Facts: Water Use in California. July, U.S. Green Building Council Resources. Water Conservation and Water Resource Management in California's Green Buildings: Data, Insights and Opportunity. (p. 6) 5 D.J. Waldie. Drought by the Numbers: Where Does California Water Go? KCET Los Angeles. February 10, Alliance for Water Efficiency. Water and Energy Introduction. Accessed May, California Energy Commission Integreated Energy Policy Report. (pp. 139, 143) 12 EPA WaterSense. WaterSense Labeled Toilets. February, EPA WaterSense. WaterSense Labeled Irrigation Controllers. February, EPA WaterSense. Statistics & Facts. Accessed May, EPA WaterSense. What is WaterSense? Accessed May, EPA WaterSense. WaterSense Labeled New Homes. August, EPA WaterSense. A Smart Investment with WaterSense August, Number of records found in all categories and regions for the EPA WaterSense Meet Our Partners. Accessed May, EPA WaterSense. Inspection and Verification Guidance for WaterSense Labeled New Homes. Version 1.2. July 24, Water usage savings calculated based on 20% reduction compared to a typical family of four. 21 International Code Council. California Green Building Standards Code California Code of Regulations,Title 24, Part 11 (CALGreen). Division 4.3 (p. 23) 22 Aquacraft Water Engineering and Management. California Water Use Efficiency Study. April 20, EPA WaterSense Our Water. Water use Today. Accessed May, EPA WaterSense Our Water. Why Water Efficiency. Accessed May, EPA WaterSense. Make the Drops to Watts Connection. February, EPA WaterSense. WaterSense Labeled Bathroom Sink Faucets & Accessories. February,

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