Title
Intergovernmental Agreement with Arizona Department of Water Resources to Conduct a Multifamily Home Water Use Study (Ordinance S-46784)
Description
Request to authorize the City Manager, or his designee, to enter into an Intergovernmental Agreement (IGA) with the Arizona Department of Water Resources (ADWR) to conduct a Multifamily Home Water Use Study (Study). Further request to authorize the City Treasurer to accept, and the City Controller to disburse, all funds related to this item. The total financial impact to the City for this IGA is $280,000.
Report
Summary
The Study will continue a partnership with ADWR that seeks to understand and evaluate residential water demand trends. It is important to understand water use trends among our various customer types, so that better water demand models can be developed. These models are used to forecast necessary infrastructure needs, drought management and effects on public health.
The Study is the second phase of a project studying water use in residential homes and will focus on the indoor and outdoor water use trends in the multifamily sector. Information from the Study will also be used to better understand this customer segment and its associated water use patterns, so that improved projections of its future demands and wastewater generation can be developed for the Water and Wastewater Master Infrastructure Plans.
The funding from ADWR will allow the City to hire a consultant to conduct water audits/data sampling for various multifamily properties in Phoenix. The City, in turn, will analyze this data and combine it with additional water billing data and information obtained from aerial imagery on outdoor landscapes and provide a detailed report on multifamily home water use.
The first phase of this project was a study focused on indoor and outdoor water use trends in the single-family sector. The phase one study was completed in partnership with ADWR, the City of Glendale and the Town of Gilbert. That project resulted in information that has since been used across Arizona to assist in understanding the important drivers of indoor and outdoor water use for the single-family sector.
Contract Term
The IGA's term will not exceed three years, commencing upon signature and terminating three years after the commencing date.
Financial Impact
The total estimated cost of the Study is $469,000. ADWR will provide $189,000 to the City to fund a portion of the study. The City will provide $150,000 in funding and $130,000 of in-kind services for a total of $280,000 to cover for equipment, analysis, reporting and other services.
Funding is available in the Water Services Department’s operating budget.
Concurrence/Previous Council Action
The City Council approved the Multicity Single-Family Water-Use Study IGA 143937 (Ordinance S-42954) on Oct. 19, 2016.
Department
Responsible Department
This item is submitted by Deputy City Manager Karen Peters and the Water Services Department.