The document discusses water issues facing Prescott, Arizona. Prescott's water supply comes from an underground aquifer, but withdrawals from the aquifer have exceeded recharge since the 1980s. As a result, the aquifer level has declined significantly. In 1999, Prescott was designated an Active Management Area by the state, requiring the city to reduce water usage and reach safe annual yield by 2025. The document evaluates various options for reducing water usage and reaching safe yield, such as a tiered water rate structure, education programs, and new plumbing fixtures. It recommends a comprehensive water management plan that incorporates multiple strategies as the best approach.

2. The Water Issue in
Prescott, Arizona
Team E
Rob Scott * Rick Wagster * Nick Arnold

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4. 1980
1997
1999
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6. Prescott AMA
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10. Reach Safe Yield by 2025
•
The Water Issue in Prescott, Arizona 10

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13. – A small drop in the bucket –
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14. Tiered Manage Education New New Adjust
Rate Leaks Fixtures Laws & Building
Structure Rules Codes
MUSTS
Safe-Yield No Go No Go No Go No Go No Go No Go
Legal Go Go Go Go Go Go
WANTS
Costs n/a n/a n/a n/a n/a n/a
Local Gov n/a n/a n/a n/a n/a n/a
The Water Issue in Prescott, Arizona 14

15. Aquifer Effluent Rain Grey Xeriscape Dozens
Recharge Usage Water Water of
Collection Usage others
MUSTS
Safe-Yield No Go No Go No Go No Go No Go No Go
Legal Go Go Go Go Go Go
WANTS
Costs n/a n/a n/a n/a n/a n/a
Local Gov n/a n/a n/a n/a n/a n/a
The Water Issue in Prescott, Arizona 15

16. Comprehensive Water
Management Plan
MUSTS
Safe-Yield Go
Legal Go
WANTS
Costs n/a
Local Gov n/a
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19. Discount rate: $ 0.91 0-40 percent of allocation
Base rate: $ 1.22 41-100 percent of allocation
Inefficient rate: $ 2.50 101-150 percent of allocation
Excessive rate: $ 4.32 151-200 percent of allocation
Wasteful rate: $ 9.48 >201 percent of allocation
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