The Arizona Department of Water Resources (ADWR) is implementing a new initiative to ensure a 100-year water supply for new subdivisions. This program aims to address concerns about water security in a state facing arid conditions and groundwater scarcity.
In Arizona, obtaining a permit for a new subdivision has typically required proof of a 100-year water supply, based on legislation from the 1980s that many states adopt. Recent studies, however, have raised concerns that groundwater may not be adequate to meet future demand. To address this issue, the Arizona Department of Water Resources (ADWR) has introduced the Alternative Assured Water Supply Designation (ADAWS), which requires new housing developments to utilize renewable water sources rather than relying solely on traditional groundwater.
Mayor Craig McFarland noted the significance of this policy for sustainable economic development in Pinal County on the City of Casa Grande's website. "The assured water supply rules are very important in creating and maintaining a sustainable economy in Pinal County," Mayor McFarland said. He also emphasized the use of effluent to replenish the aquifer under Casa Grande, aiming to improve water security for current and future residents. According to the same source, McFarland highlighted the importance of using effluent to recharge aquifers, which is expected to provide greater stability in water resources for all residents of Casa Grande.
Pinal County Supervisor Stephen Miller highlighted the necessity of these measures. In many parts of Pinal County, approvals for new subdivisions have paused for years as inventories from previously approved developments decline. The City of Casa Grande's website notes that Miller addressed the effects this has on housing availability and prices, "Our agricultural lands will be unable to make the natural transition to housing which we desperately need. As the supply of housing runs out, home prices will skyrocket. It’s that simple." He expressed hope that the new rules will forge a pathway between present challenges and a viable future.
On another note, on October 7, ADWR passed the supporting rules for ADAWS over to the Governor’s Regulatory Review Council (GRRC), signaling the last phase before these rules potentially become concrete. These will be reviewed during a Council Study Session next Wednesday, with the final decision expected on November 5.
Public participation is encouraged—anyone interested can send written comments to the GRRC or attend their meetings virtually. Details for participation are available on the GRRC's website, along with agendas for upcoming Study Sessions or Council Meetings.
