CITY OF EVERETT

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CITY OF EVERETT

• Water Demand Projection Methodology

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COE Water Demand Methodology

• Customer Categories and Characteristics
• Potable Water
• Unfiltered Industrial Water
• Non-Revenue Water
• Reclaimed Water
• Total System Demand

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COE Water Demand Methodology

• Customer Categories and Characteristics
• Single Family Residential
• Multi-Family Residential
• Multi Family Irrigation
• Commercial Industrial
• Commercial Industrial Irrigation
• Government
• City of Everett
• City of Everett Irrigation
• Fire Service
• Unfiltered Industrial

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COE Water Demand MethodologyPotable Water

• Production of Potable Water
• Water Produced at Filter Plant
• Sales of Potable Water
• Water Delivered to Customers
• Non-Revenue Water
• Difference Between Production and Sales
• Forecast of Demand for Potable Water
• With and Without Conservation Savings
• Projection Years 2011, 2025, 2050 2100

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COE Water Demand MethodologyProduction of
Potable Water
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COE Water Demand MethodologySales of Potable
Water
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COE Water Demand MethodologyDemand Peaking
Factors

• Maximum Day Demand Peaking Factors for Potable
  Water Sales
• MDD Peaking Factor MDD/ADD
• Wholesale customers provided their MDD Peaking
  Factors
• MDD PF are used to project Maximum Day Demands

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COE Water Demand MethodologyWater Use Factors

• Water Use Factor is a measure of water use per
  unit, such as household or employee.
• Factors were calculated for retail and wholesale
  service areas
• Factors developed for Single-Family Residential,
  Multi-Family Residential and Non-Residential
  Categories

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COE Water Demand MethodologyWater Use Factors
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COE Water Demand MethodologyComponents of
Forecasting Methodologies

• Separate Forecast for Everett and each Wholesale
  Customer
• Single-Family Residential
• Multi-Family Residential
• Non-Residential (Excluding 4 largest
  Industrial/Commercial)
• Large Industrial Potable Demand gt 100,000 gpd
• Non-Revenue Water
• Demographic Forecast PSRC
• Water Use Factors
• Large Customers (Retail)
• Non-Revenue Water
• Conservation and Code Savings
• Maximum Day Demand
• New Wholesale Customers

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COE Water Demand MethodologyPopulation Forecast
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COE Water Demand MethodologyDemand Forecast
Potable Water
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COE Water Demand MethodologyUnfiltered
Industrial Water

• Production of Unfiltered Water
• 3-year (2002, 2003, 2005)
• Average Day Production 30.4 MGD
• Maximum Day Production 33.2 MGD
• Peaking Factor 1.1
• Sales of Unfiltered Water
• 3-year (2002, 2003, 2005)
• Average Day (Kimberly-Clark) 27.8 MGD
• Non-Revenue 2.6 MGD

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COE Water Demand Methodology

• Projected Demand for Unfiltered Industrial Water

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COE Water Demand MethodologyNon-Revenue Water
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COE Water Demand MethodologyReclaimed Water

• Reclaimed Water is Treated Effluent
• Used at Kimberly-Clark for Industrial Use
• Started Delivering in Nov. 2005
• 1 3 MGD (Winter Need)
• 3 4 MGD (Summer Need)
• Largest Reclaimed Water in Western WA

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COE Water Demand MethodologyTotal System Demand
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COE Water Demand MethodologyTotal System Demand