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Case studies

Spanish Fork

Spanish Fork, Utah, has begun implementing an innovative water conservation program to install free smart irrigation controllers for residential customers to reduce pressurized outdoor irrigation and stagger watering times to lower peak demand. The City has already seen peak demand reductions and a 17% reduction in outdoor irrigation for homes with smart irrigation controllers installed.

Project at a Glance

Utility Overview

  • Utility: Spanish Fork Public Works
  • Location: Spanish Fork, Utah
  • Population (city): ~43,000
  • Service area: 15 square miles

Challenges

  • Growing peak water demand
  • Limited water system capacity
  • Recurring drought
  • State water conservation goals

Solution

  • Innovative water conservation program to install free smart irrigation controllers for residential customers to reduce pressurized outdoor irrigation and stagger watering times to lower peak demand.

Costs and Funding Sources

  • Total project cost: ~$330,000
  • Funding sources:
    • Operating budget: ~$30,000 for professional installers, utility vehicles, and conservation staff
    • Grants: $300,000 to purchase smart controllers
      • State of Utah Department of Natural Resources: $150,000
      • Central Utah Water Conservancy District: $150,000

Project Benefits

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Lowered peak daily demand by 0.5%
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Reduced pressurized irrigation by 4,500 gallons, or 17%, compared to homes with no smart irrigation controller
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Only 1.2% increase in demand despite a 4% population growth in 2018 extending the capacity of the existing water system
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App-enabled technology saved participating residential customers time and money
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Provides real-time data to customers
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Improves metering accuracy
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Helps identify leaks sooner
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