Water Use Efficiency: Trends, Tools

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Water Use EfficiencyTrends, Tools Technology

• Lloyd Hathcock, Niagara Conservation
• Chairperson, AWWA Water Conservation Division

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Summary

• Water efficiency progress
• Tools and technologies
• Tips for planning, developing, purchasing for and
  evaluating your programs
• Wrap up
• Questions

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Never discourage anyonewho continually makes
progress, no matter how slow.

• Plato

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Tremendous Progress

• Local and state policies and programs
• Sustainablenc.org
• Planning tools
• Tech resources
• Case studies
• Other resources
• EPA WaterSense
• US Dept of Energy
• Federal Energy Mgt Program
• Alliance For Water Efficiency

• US Green Building Council LEED
• Food Service Technology Center
• Cost/savings calculators
• Engineering/design improvements
• Workshops, conferences, stakeholder meetings
• New technologies

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Sanitary Technologies

• High Efficiency Toilets (HETs) use 1.28 gpf
• Flapperless technology
• Dual-flush technology
• Pressure assisted flush
• Efficient flush valves
• Waterless urinals

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Flow Control Technologies

• High efficiency showerheads _at_ 1.5 gpm
• WaterSense certification criteria being developed
• Lavatory faucet aerators _at_ 0.5 gpm
• WaterSense certification criteria being developed
  
• Kitchen faucet aerators _at_ 1.5 gpm

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Flow Control Technologies

• Pre-Rinse Spray Valves _at_ 1.28 gpm
• Increases efficiency up to 80
• Salon Sprayers _at_ 2.0 gpm
• Increases water efficiency up to 50

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Metering Technologies

• Automated Meter Reading (AMR)
• Radio Frequency
• Cellular
• Touch read
• Submetering
• Multi-family
• Distribution systems

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Rain Harvesting

• Reduces, if not eliminates, potable water use for
  irrigation and non-potable needs
• Systems range from simple to complex in design
• Well designed and sized systems can be very cost
  effective

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Cooling Technologies

• Closed loop chilling systems
• More efficient cooling towers
• Using alternative water for cooling tower makeup
• process effluents
• Rain harvesting
• other

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Irrigation Technologies

• ET Controllers
• Centralized control systems
• Efficient spray devices and drip emitters
• Efficient system designing/planning

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Leak Detection Reduction

• Billions of gallons savings potential nationally
• AWWA standard lt10 line loss for public
  distribution systems
• Evolving leak detection technology
• New lining, repair, rehab technologies

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Planning to Implementation

• Establish water efficiency goals
• Involve all stakeholders
• Engage local water managers
• Identify all potential means to increase water
  efficiency
• Rank and choose measures to implement
• Cost/benefit analysis

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Planning to Implementation

• Procure needed resources
• Avoid lowest cost as sole criteria when
  possible
• Reference and require established performance
  standards when possible
• Price does not always correspond with performance
  or potential savings

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Planning to Implementation

• Develop implement strategies
• Monitor all aspects of implementation
• Monitor and measure costs, results and savings
• Make adjustments when/where needed

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Wrap Up

• Water efficiency technologies, practices and
  services are constantly evolving
• Research the best technologies and options for
  your particular needs
• Seek involvement from all stakeholders
• Share in the successes and learn from the set
  backs

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Thank You

• Lloyd Hathcock, Director
• Lhathcock_at_niagaraconservation.com
• 800-831-8383 ext 188