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Water Budget: A Key Customer Education Tool

Learn about the definition and uses of water budgets, including examples of outdoor and indoor water budgets. Discover how water budgets can be used for customer education, infrastructure planning, and system-wide differentiation. Contact Jill Hoyenga for more information.

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Water Budget: A Key Customer Education Tool

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  1. Eugene Water & Electric Board Jill Hoyenga, Water Management Services Supervisor

  2. Eugene Water & Electric Board Water Budget: A Key Customer Education Tool PNWS-AWWA Annual Conference Pre-Conference Seminar April 30, 2008

  3. Definition of a Water Budget • An estimate of how much water a customer “should” use • Most useful when compared to the customer’s actual use • Also called a water allocation

  4. Outdoor Water Budget • Most common type of water budget • Example of irrigation demand calculation: • Water one inch deep on 1000 sqft area equals 623 (624) gallons (134 cubic feet of water) • Percent of ET demand expressed as inches per time period (day, week, month) • Square footage of watered area

  5. Indoor Water Budget: Residential • Uses AWWARF Residential End Use Study or local equivalent • Example of indoor fixture calculation: • Inventory fixture count and usage • Multiply by number of units • Occupancy rates may vary per unit so a high/low range is most useful for multi-family • Be aware of multiple meters for multi-family

  6. Indoor Water Budget: CII • Might use AWWARF Commercial End Use Study or local equivalent • Example of indoor fixture calculation: • Inventory fixture count by type • Divide total use per day by number of employees • A high/low estimate is most useful • Seasonal, production, and other changes make these estimates very difficult

  7. Uses of a Water Budget • Customer Education • Sorting tool for program participation • Infrastructure planning and design • SDC calculations • System-wide differentiation of beneficial and non-beneficial use • Building a rate case • Curtailment planning

  8. Water Budget forCustomer Education • Outdoor water use education • Leak detection • Retrofit comparisons • Education foundation for possible water budget based water rates or curtailment

  9. Water Budget as aSorting Tool • Customer soliciting services that may not be needed • Water budget selection for potential program participants • Outdoor water conservation programs • Identify cooling load customers

  10. Water Budget forInfrastructure Planning • Meter sizing and SDC charges • Irrigation demand for individual service • Reservoir and main sizing • Avoid irrigation demand using up fire-flow capacity

  11. System-wide use of Water Budgets • Differentiate between beneficial and non-beneficial use (particularly outdoor water use) • Water budget by sector or customer class • More accurately assess the revenue impact of a successful conservation program • Build a case for water budget water rates • Build a water budget based curtailment plan

  12. Questions? Jill Hoyenga 541-984-4706 jill.hoyenga@eweb.eugene.or.us

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