Coordinated Water System Plan - Kitsap County Government

Kitsap County May 9, 2005
Coordinated Water System Plan
Regional Supplement 2005 Revision
Exhibit 9-3A
Comparison of Conservation Program Costs
*
Customer
Sector
Examples of measures
Saving
s
(mgd)
Cost
Cost per 1
mgd
1
Residential
Domestic
Toilet, faucet, and showerhead retrofits;
efficient clothes washers
8.5 $22,000,000 $2,588,235
1
Residential
Landscape
Irrigation systems and scheduling
efficiencies; natural lawns and gardens
3.4 $14,000,000 $4,117,647
1
Commercial
Process
Air cooling; process water and cooling
tower efficiencies; laundry wash water
recycling
3.9 $14,000,000 $3,589,744
1
Commercial
Domestic
Low flush toilets and urinals; waterless
urinals; swimming pool & hot tub
efficiencies
1.3 $2,000,000 $1,538,462
1
Commercial
Landscape
Weather-based irrigation; Irrigation
system and scheduling efficiencies; soil
moisture sensors
0.5 $2,000,000 $4,000,000
2
Residential
Domestic
Residential plumbing retrofits -
showerheads \ toilets
1.0 $4,307,000 $4,307,000
2
Residential
Domestic
Metering with commodity rates for all
connections (associated O&M
$18/yr/meter)
1.0 $6,313,000 $6,313,000
2
Residential
Domestic
High-efficiency washing machine rebate
program - $75
1.0 $4,200,000 $4,200,000
2
Commercial
Domestic
Ultra low flush toilets - $126 per unit -
Commercial, Industrial, and Institutional
1.0 $4,704,000 $4,704,000
2
Residential
Domestic
Ultra low flush toilets - $126 per unit -
Residential
1.0 $2,940,000 $2,940,000
Source: 1. Seattle Public Utilities -Seattle-King Co. Regional Water Conservation Program Report 2002
2. Water Use Efficiency: The Costs and Water Savings Quantified - Paul Selsky-Brown and Caldwell-
Sacramento-AWWA Conference 2002
Section 9 - Regional Water Supply Plan 9-15