OBJECTIVES –• Learn to work with owner and design team to use water efficiently• Learn Green Guidelines and Practices• Get familiar with LEED, Green Points & other criteria related to Water Efficiency
Home Water Usage Opportunities 4% 14% Other 27% Toilets Showers22% Faucets Clothes Washers Leaks 16% 16%
Domestic Water Efficiency• Distribute Hot Water Efficiently – Insulate Water Heater – Insulate Hot Water Pipes – Install On Demand Circulation Pumps – Locate Water Heater Within 12’ of Fixtures• High Efficiency Toilets• Water Efficient Fixtures• No Plumbing Leaks
Distribute Domestic Hot WaterEfficiently• Locate Water Heater within 12 Feet of All Fixtures
Distribute Hot Water Efficiently Insulate Water Heaters
Distribute Hot Water Efficiently Insulate Accessible Hot Water Pipes
Distribute Hot Water Efficiently• Install On-Demand Circulation Control Pumps
High Efficiency Toilets• Dual-Flush or maximum 1.28GPF
Water Efficient Fixtures–Toilets less than 1.28 gpf (use dual flush)–Showers use max 2.0 gpm–Faucets use max 1.5 gpm
Water Efficient Fixtures• Water savings from low flow lavatory faucets, used for hand washing.• Faucet aerators and laminar flow devices conserve water by restricting the water flow at the fixture outlet.
Showers• High efficiency shower heads may reduce demand for hot water and reduce energy use for water heating by up to 20%.
Water Heater• The water heater must be strapped.
Plumbing System Integrity and No Plumbing Leaks• Conserve water and prevent damage from leakage• Aspects of basic plumbing integrity include addressing plumbing leaks, the installation of water heaters and backflow devices.• Unknown plumbing leaks can damage the home and promote bacterial growth and waste resources and money.• Water heaters which are not strapped can result in significant damage in a seismic event.
Testing for Plumbing Leaks• Verify there are no leaks between the meter main at the street and the main shut off at the home.
Visibly Examine the Plumbing System for Overall Integrity• Look for small leaks and water stains that indicate current not historic issues throughout house.• Look for excessive corrosion on pipes that would constitute a leak or potential leak.• Conduct a toilet tank dye test.• Check the irrigation system for missing heads or other system leaks.
• Benefits of Greywater Recycling For Irrigation• Reduce fresh water use - When the weather is warm, about half of the water consumed by the average household in North America is for outdoor use. Capturing the indoor greywater for use outdoors can cut water usage in half. Reduce strain on septic system or treatment plant - Greywater makes up the majority of the household wastewater stream, so diverting it from the septic system extends the life and capacity of the system. For municipal systems, decreased input means more effective treatment coupled with cost savings. Develop otherwise unsuitable real estate - A greywater recycling system, along with the use of composting toilets, can enable the development of property that is unsuitable for a septic system. Groundwater Recharge - Greywater recycling for irrigation replenishes groundwater, helping the natural hydrologic cycle to keep functioning.
Plant growth - Greywater can support plant growth inareas that might otherwise not have enough water.Maintain soil fertility - The nutrients in the greywaterare broken down by bacteria in the soil and made availableto plants. This helps to maintain soil fertility.Enhance water quality - The quality of groundwater andsurface waters are much better preserved by the naturalpurification processes the greywater undergoes in the toplayers of the soil than by any engineered water treatment.Satisfaction - The greywater user gets the satisfaction ofdirect participation in the responsible management ofglobal nutrient and water cycles.
Green Point Rating: Minimum 50 points Required Consumer label, tied to independent field verification California grown & community based Ratings reflect practices ABOVE code in CA Plug-and-play resources for local govt. policies & incentives Quantifies environmental benefits Green building market value Complementary to LEED for Homes
Green Point Rated Single Family ChecklistCategory Minimum Required Possible PointsCommunity 0 4Energy 30 108Indoor Air Quality – IAQ 5 45Resources 6 66Water 9 47Innovative 0 20Total 50 290
Green Points for WaterConservation• Landscaping- 27 possible points• Plumbing - 12• Appliances - 5• Site - 2• Other - 1
REMEMBER……….The point is not about getting points. It’s about doing the right thing!