In response to the need for comprehensive and comparative evaluation of
demand management strategies, the Water Conservation Alliance of Southern
Arizona (CASA) has embarked on a major research initiative that will include:
a survey of conservation programs/strategies currently underway, or
implemented within the past ten years; gathering water use data for several examples (up to 6) of a broad
spectrum of conservation programs developed from the survey above;
determining the actual water saved by each measure (as opposed to
anticipated or predicted savings) for each distinct case;
a comparison of water savings data from all case study samples for
each measure;
establishing actual costs (both public and private) for each case study
within all programs or measures being compared;
a quantification of any benefits for each measure separate from the
actual water savings (e.g. customer service, environmental sustainability); and,
a determination of the amount of money actually expended per acre-foot
of water saved, Cost Effectiveness Analysis (CEA), for each program or
measure in each individual case studied as well as a determination of the
net monetary benefits of the program, Cost-Benefit Analysis (CBA).
The findings of this study will be presented as a resource document for
everyone in Arizona and throughout the Southwest who is involved in decision-making
regarding water resource management. Water CASA wants water
management professionals to be able to easily use the study results to make the
most informed decisions possible with regards to a particular measure's
effectiveness, costs and benefits. Completion of this project requires in-depth research of current conservation
measures, collection of actual water use data, collection of both monetary and non-monetary costs and benefits associated with conservation programs,
quantitative comparison of conservation programs, and discussion of nonquantifiable
facets of the programs.
The first phase of the project involves structuring of data storage methods, which
includes determining what types of costs and benefits to include in the analysis,
what background information is needed from water providers, and how all the
data is kept and manipulated. To identify appropriate data to be included in the
database, this phase of the project will involve research of water conservation
indicators, literature reviews of current strategies, and communications with
various water providers and municipalities.
The second phase of the project will include compiling data for analysis and
performing the analyses for each program. This will start with researching past
and current conservation programs from throughout the nation, which will be
stored in a Microsoft Access database. It will also include surveying water
providers to obtain primary data on implemented conservation programs. Excel
2002 will be used to input, store, and display the data, and to perform
calculations.
The actual amount of water saved, that will be attributed to the conservation
measure in question, will be determined by using both pre-measure and post-measure
water use data, and participator and control group water use data.
Mean water use will be calculated for both groups pre-measure and postmeasure.
The water savings is the difference in the percent increase (or
decrease) of average control group and participant water use from pre-measure
to post-measure. Includes table.