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• Board Meeting Date: 1/23/2008
• Description: OWCDP Section - City of Northglen - High Efficiency Toilet Give-Away Program
• Board Meetings - Doc Type: Memo

Section 2
Conservation and Efficiency Technical Roundtable
Table 2-2 What are the Projected Long-term Savings from Conservation Alternalives7
Estimated Potential Water Potential Water Potential Water
Implementation Savings Range - Savings Range • Savings Range - Estimated cost range of
or Penetration Per Customer Entire Program Entire Program program per AF of Expected durability of
Measure Level by 2030 (kgatlyear) {kgallyear) (aflyear) Savings ($!AF) savings SourceslDocumentation
Metering of all utility Very few
customers customers in
Colorado are not
metered in 2005
May go after some
of the same
savings. These
should not be
summed to
calculate total
potential savings.
TOTAL (not including duplicates) 93,543,335 • 286,943 -
149,509,612 458,618 aflyr
kgallyr
POTENTIAL Weighted Average Cost
SAVINGS (not Per AF of Savings
including
duplicates)
372,780 aflyr $10,6141af
FOOTNOTES
Penetration rates and potential water savings are designed to be realistic, but conservative estimates based on implementation across the entire state over the next 25 years. These estimates do not take into
consideration new products and technologies that are entering the market even today such as high efficiency toilets and super high efficiency clothes washers. Substantial changes in irrigation practices are also
expected in the next quarter century. It is quite possible, even likely, that actual savings vall be higher than projected.
Conservation savings, unlike Vaditional supply options, must be rigorously verified and maintained through ongoing public education and social marketing efforts. For conservation programs to be successful,
citizens and businesses alike must understand that water is valuable and should not be wasted.
Other measures not listed above
Municipal ordinances
Municipal codes and ordinances can be used as a tool to increase implementation of cost effective conservation savings. These tools can be effective and encrouraging conservation in several areas,
Landscape ordinance
Landscape ordinances can reduce outdoor demands in new construction by establishing guidelines and requirements for landscape and irrigation s}stem installations as currently exist for other building trades.
Providers can limit lost opportunities by establishing standards since incremental costs for proven methods and technology are often minimal in a new installation. Retrofit on sale ordinances requires properties
that sell to retroft fixtures to current standards. This method of increasing participation is used in many regions already to insure that properties comply with smoke alarm requirements.
Retrofit on salelresa4e ordinance
Retrofit on sale or resale requirements often Includes a rebate to help fund the requirement. Local building officials can require more efficient fxtures than the national or state codes mandate. In this manner, a
community may choose to require 1.1 gallon per Flush toilets he installed rather than the standard 1.6 gallon per flush toilets and use the savings to extend water supply..
2-1 D
DRAFT VLArI
51SW5121FUW~ OEIIVERABLE~CONS 6 £F'F 5='.53 CONSERVATION 8 EFFICIENCY la-0].000