From approximately 2/2014. Source unknown.  

 

Arizona’s Assured Water Supply Rules

 

The Assured Water Supply layer allows homeowners to locate their parcel and retrieve important information about the assured water supply status of the parcel.  The layer includes identification numbers that can be used to connect information at each of the three agencies that are involved with assured water supply regulations. 

 

The Arizona Department of Water Resources (ADWR) reviews applications for assured water supply status and issues the certificates and designations.  ADWR certificate or designation numbers are included in the map tips for each area and can be used to access information from the Arizona Department of Water Resources. 

http://www.azwater.gov/dwr/

 

The Central Arizona Groundwater Replenishment District provides water replenishment services to holders of assured water supply status.  The Member Land Number and Member Land Name in the map tip can be used to access information from the Central Arizona Groundwater Replenishment District.  (This information might include:  amount of water replenished on behalf of the subdivision in the previous year, when the subdivision joined the CAGRD or what water company provides water service to the subdivision.) 

http://www.cagrd.com/

 

Pima County Development Services reviews and issues plat approvals to developers.  Plat approvals give developers authorization to proceed with agreed upon development plans.  The subdivision field on the map tip is the Pima County Development Services name for the project.  The project name can be used to access all of the information about the subdivision plat recorded by the County. 

http://www.pima.gov/developmentservices

What is an Assured Water Supply?

The Assured Water Supply program is the regulatory program used by the Arizona Department of Water Resources.  The Assured Water Supply program was created subsequent to the historic 1980 Groundwater Management Act, and operates within Arizona’s five Active Management Areas.  (See: http://www.azwater.gov/WaterManagement_2005/Content/AMAs/default.htm for more information about Active Management Areas.)  Within the Active Management Areas every developer is required to demonstrate an assured water supply that will be physically, legally, and continuously available for the next 100 years.  The assured water supply must be shown before the developer can record plats or sell parcels.  The Arizona Department of Real Estate will not issue a public report, which allows the developer to sell lots, without a demonstration of an assured water supply.  The developer can prove a 100-year supply by satisfying the requirements to obtain a Certificate of Assured Water Supply or by a written commitment of service from a provider with a Designation of Assured Water Supply.

Certificates and Designations of Assured Water Supply differ in important ways.  Most importantly for homeowners, homes within subdivisions that hold a certificate of assured water supply must pay the cost of the delivery of their water, as well as, an assessment for replenishment of renewable water supplies to offset the home’s use of non-renewable groundwater.  The replenishment assessment is part of the annual property tax assessment that the homeowner pays each year.   Homeowners, whose homes are connected to water providers that hold a designation of assured water supply, do not pay this assessment and are only responsible for the costs that are billed by the water provider.  

Most homes in the City of Tucson are connected to City of Tucson Water, which is a designated water provider.  Oro Valley, Marana, Metropolitan Domestic Water Improvement District (Metro), Rancho Sahuarita Water Company, Vail, and Spanish Trail Water Company are also designated water providers in Pima County.   Designated water providers are the largest water providers serving thousands of homes while certificated areas are much smaller, encompassing a few dozen to a few hundred homes.  Understanding how your home achieved its assured water supply status is important to understanding how this critical resource will be supplied to your home now and in the future.