Preparing for a Water Audit Thomas Pape Technical Advisor, AWE Principal, BMP

Maximize Auditor Productivity and Minimize Cost Pre-notify and Provide Access to Experts Pre-notify and Provide Access to Experts –Facility Managers –Bill Payer –Cooling Tower Operators –Production Managers (activities that affect water use) –Supervisors where significant water is used –Key holders

Prepare and Access Records Consumption Histories Consumption Histories Location of Water Meters Location of Water Meters Tie water meters (accts.) to buildings, uses, operations Tie water meters (accts.) to buildings, uses, operations Sub-meters on major uses Sub-meters on major uses Production history (?) Production history (?) Equipment change history Equipment change history

List of Expectations Previous efficiency measures and activities Previous efficiency measures and activities Planned or facility changes Planned or facility changes Acceptable ROI parameters Acceptable ROI parameters Motivations for audit Motivations for audit Benefit/Cost analysis Benefit/Cost analysis Preferred and non-preferred retrofits Preferred and non-preferred retrofits

Green Building Codes: Improving Water Efficiency Thomas Pape Technical Advisor, AWE Principal, BMP

Why are codes needed? Standards only address the product itself; not how, when and where it is installed. Standards only address the product itself; not how, when and where it is installed. WaterSense is voluntary program WaterSense is voluntary program Federal standards are not based on local conditions Federal standards are not based on local conditions Rebates, vouchers and distributions can be costly Rebates, vouchers and distributions can be costly

Role of Codes Codes do not replace: standards, ordinances, EPAct, WaterSense, vouchers, rebates, distributions …. Codes do not replace: standards, ordinances, EPAct, WaterSense, vouchers, rebates, distributions …. Codes enhance the overall strategy of water efficiency Codes enhance the overall strategy of water efficiency

IAPMO Green Plumbing & Mechanical Code Supplement Supplements existing code, not stand alone code Supplements existing code, not stand alone code Most compatible to own family of codes, but not exclusive Most compatible to own family of codes, but not exclusive Very Comprehensive: Plumbing, HVAC, Appliances, Alternate water sources Very Comprehensive: Plumbing, HVAC, Appliances, Alternate water sources Residential (some) and non-residential Residential (some) and non-residential Limited irrigation provisions Limited irrigation provisions ICC International Green Construction Code

Key Differences IAPMO Green All residential and non-residential All residential and non-residential Prescriptive based water efficiency Prescriptive based water efficiency Easy to implement, inspect and enforce Easy to implement, inspect and enforce 1 st Edition available 1 st Edition available ICC Green Only high-rise residential and non- residential Only high-rise residential and non- residential Performance based water efficiency options Performance based water efficiency options Offers flexibility to builders & JHA Offers flexibility to builders & JHA In-progress In-progress

Sanitary Fixtures Faucets – 0.5 to 1.5 gpm Faucets – 0.5 to 1.5 gpm Showerheads – 2.0 gpm/1800 ft 2 Showerheads – 2.0 gpm/1800 ft 2 Toilets – tank 1.28 gpf*; Toilets – tank 1.28 gpf*; flushometer 1.6 gpf *Non-commercial

Appliances Energy Star Energy Star WaterSense WaterSense Water Softeners Water Softeners –Use limits –Discharge water efficiency

Water Pressure 65 psi maximum (domestic uses) 65 psi maximum (domestic uses)

Commercial Kitchens Icemakers > 50% water efficiency Icemakers > 50% water efficiency Food Steamers < 2 gal/hr Food Steamers < 2 gal/hr Combo ovens <10 gph Combo ovens <10 gph Dipper wells (in-progress) Dipper wells (in-progress)

Medical and Laboratory No water tempering for sterilizers No water tempering for sterilizers X-ray process requires recycling X-ray process requires recycling Exhaust hood scrubber - H2O re- circulation required Exhaust hood scrubber - H2O re- circulation required

Sub-meters Required Irrigated landscape Irrigated landscape Cooling towers Cooling towers Boilers Boilers Each building Each building Each tenant space Each tenant space Processes using > 1,000gal/day Processes using > 1,000gal/day

Alternate Water Sources Gray Water Gray Water Reclaim Water Reclaim Water Rainwater Rainwater Condensate recovery Condensate recovery Discharge water re-use Discharge water re-use

Hot Water Distribution Limiting cold water purge to 32 oz Limiting cold water purge to 32 oz Pipe insulation on HW pipes Pipe insulation on HW pipes

More Information Alliance for Water Efficiency a4we.org Thomas Pape