Grand Junction Retrofit Survey

• Project Type: General OWC
• Applicant: City of Grand Junction
• Project Name: Residential Retrofit Project
• Title: Grand Junction Residential Retrofit Survey
• County: Mesa
• Water Conservation - Doc Type: Correspondence

RETROFIT PILOT DEMONSTRATION CONSIDERATIONS

1. Program should have element of mid-pnt. inspection to check
on:
1) devices still in stalled
2) customer satisfaction - for added customer buy in.

2. May have to design for daily household savings instead of
per/person

3. Evaluation to be difference testing instead or regression
(projections and estimates) such as others have done; would
give more statistically significant findings

4. Will use the validity of difference testing to determine
savings in dollars to:
1) resident
2) utility
3) if useful, regress over population base

5. Would need briefing for Grand Junction staff who conduct the
installation

6. Grand Junction would like to have a landscape conservation
component considered in the program design, such as distributing
landscape conservation information to 25% of participants

7. RE: Analysis; per household or per capita reduction should be
determined

Things to Measure:
* water usage changes
* energy usage changes
* consumer acceptance of devices
* device retention

Things to Analyze:
* ROI for utility
* cost effectiveness of program, payback period (see Seattle)
* cost savings to residents

Devices:
showerhead & toilet device; Rationale - 1 device to attempt
isolation on both water and energy usage; Also most retrofits
for evaluation use dams - the Future Flush would bring added
information to the field and add to long term savings
evaluation

Billing - how often & in what detail

Sample size & demographics