Water policy now divides Arizona’s governor candidates over growth, housing costs, rural pumping and leverage in river negotiations.
Arizona’s governor race now asks voters to choose how the state should grow when water no longer feels unlimited. KJZZ reports that Democratic Governor Katie Hobbs and Republican challenger Andy Biggs offer sharply different strategies. Hobbs emphasizes conservation and groundwater safeguards, while Biggs promises new infrastructure, additional supply and desalination.
A view of the Central Arizona Project canal in Phoenix via phoenix.gov
That contrast reaches far beyond environmental policy. Water decisions determine where developers can build homes, how long farms can operate, what businesses pay for reliable service and how aggressively Arizona can defend its position in Colorado River negotiations. Voters are choosing between two growth models, not merely two approaches to drought.
Water concern already extends across Arizona’s electorate. A Colorado College survey found that 93% of Arizona voters considered inadequate water supplies a serious problem, including 71% who called the problem very serious. Support for an agreement requiring Colorado River states to reduce water use reached 85% in Arizona.
Those results give Hobbs a strong opening, but they do not settle who should conserve or how much growth voters will accept. Survey respondents expressed broad support for protecting water without assigning the economic burden among households, farms, industries and developers. Hobbs must convert general concern into support for the specific restrictions imposed under her administration.
Katie Hobbs, Governor of Arizona, via Office of the Arizona Governor.
Arizona voters rank inadequate water supplies as a serious concern, via Colorado College.
Hobbs has used executive authority to expand groundwater oversight. Her administration established new Active Management Areas in the Willcox and Ranegras Plain basins, placing pumping under stronger measurement and conservation requirements. She also cancelled state land leases held by Fondomonte, ending the company’s groundwater pumping in Butler Valley.
Those actions support a clear campaign message. Hobbs can argue that groundwater protections preserve Arizona’s ability to support communities, agriculture and future investment instead of allowing present demand to exhaust local aquifers. Her weakness is equally clear because restrictions become politically costly when voters associate them with fewer homes, higher prices or lost economic activity.
Campaign messaging therefore has to explain conservation through household consequences. Hobbs needs to show which wells, communities and future buyers receive protection from stronger rules. Warnings about long term scarcity will carry less force if suburban voters believe the immediate result is simply more expensive housing.
Biggs rejects the idea that stricter conservation laws provide Arizona’s best response. He argues that the state needs better measurement, stronger infrastructure and greater access to existing groundwater. His approach promises to preserve development by expanding usable supply rather than limiting demand.
Desalination gives that argument a visible project. Biggs wants to restart the Yuma Desalting Plant, which the federal government completed in 1992 to treat salty agricultural runoff. KJZZ reports that the plant has operated only twice and would require tens of millions of dollars in upgrades, followed by substantial operating expenses.
Andy Biggs, Republican nominee for Arizona governor, via Office of Congressman Andy Biggs.
Yuma’s dormant desalting plant anchors Biggs’ water expansion argument, via Bureau of Reclamation.
Biggs has said Arizona could seek a federal grant to help revive the plant. Federal support provides a possible funding mechanism, but no award, upgrade schedule or final operating plan currently guarantees additional water. Restarting the facility could also affect the Cienega de Santa Clara wetland created by diverted runoff, adding environmental and legal constraints.
Larger desalination proposals face even greater obstacles. Arizona lacks a coastline, so many plans depend on a plant in California or Mexico, a new pipeline or an exchange for another jurisdiction’s Colorado River allocation. Each option requires large capital commitments, outside agreements and years of planning before delivering water to Arizona homes or businesses.
Biggs can still make augmentation politically powerful by connecting it to continued growth. Developers, employers and voters worried about housing supply may prefer a candidate promising more water instead of more restrictions. His campaign must place costs, timelines and expected yield beside that promise because infrastructure without delivery details remains an aspiration.
Housing places the sharpest economic pressure on Hobbs’ conservation record. Arizona’s Department of Water Resources projected 4.86 million acre feet of unmet groundwater demand across the Phoenix Active Management Area over 100 years. Unmet demand means the model could not satisfy all projected pumping because some wells would run dry.
That finding led the department to stop approving subdivisions in certain Phoenix area locations that depended entirely on groundwater. Arizona’s Groundwater Management Act requires developers in Active Management Areas to demonstrate an assured water supply lasting 100 years. Existing approvals for approximately 80,000 home lots were not affected, but the decision restricted future projects around fast growing areas such as Buckeye and Queen Creek.
Groundwater modeling links future housing approvals to long term supply, via Arizona Department of Water Resources.
Republicans turned that restriction into a direct affordability criticism. Biggs argues that limiting construction reduces housing supply and raises costs for families trying to buy in growing suburbs. A state court later ruled against the department’s approach, ending the restriction while the legal and policy debate continued.
Hobbs has responded with programs designed to permit growth without abandoning supply requirements. Arizona’s Alternative Designation of Assured Water Supply program allowed one provider to secure enough certified water for approximately 60,000 additional homes. A later designation in the Pinal Active Management Area supported more than 80,000 homes, according to state water officials.
Those approvals complicate a simple choice between conservation and construction. Hobbs can argue that stronger rules force developers and utilities to secure dependable supplies before selling homes. Biggs can argue that state regulation delayed building and required new administrative routes to restore development that should not have stopped.
Suburban campaigns need to identify which part of that argument voters experience personally. Renters and prospective buyers may focus on supply and price, while existing homeowners may prioritize reliable service and protection from future shortages. A water message that does not connect regulation to monthly costs will remain too technical to move those voters.
Colorado River losses make the governor’s authority more consequential. Axios Phoenix reported that Arizona faces a 760,000 acre foot reduction under the federal plan for 2027 and 2028. That amount could serve more than 1.5 million single family homes for one year.
Central Arizona Project deliveries will fall by 50%, although the effects will vary among cities, farms and water providers. Phoenix receives 40% of its supply from the Colorado River, 58% from the Salt and Verde rivers and 2% from groundwater. Those figures show why statewide slogans cannot describe every community’s risk.
Seven states compete for shrinking Colorado River supplies, via usgs
Phoenix has already spent $300 million on a drought pipeline capable of serving roughly 400,000 residents with Salt and Verde River water. City officials also plan water purification facilities and a possible Bartlett Dam expansion estimated at approximately $3 billion. No federal funding is currently attached to that dam project, demonstrating the financial limits surrounding new supply.
Whoever wins the governor race will direct the Arizona Department of Water Resources, review water legislation and represent the state during the next phase of river negotiations. KJZZ identifies 2028 as the next major negotiating round. Conservation policy will influence whether Arizona can demonstrate responsible use, while infrastructure policy will determine how much damage reduced river deliveries create inside the state.
Hobbs will argue that documented conservation strengthens Arizona’s credibility when demanding sacrifice from other states. Biggs will argue that Arizona needs more forceful leadership and additional supply because negotiations alone cannot produce enough water. Voters must decide which approach gives the state greater leverage before temporary federal rules give way to another round of bargaining.
Arizona’s water choice is not conservation or growth in isolation. Hobbs treats conservation as the condition that makes future growth possible. Biggs treats supply expansion as the condition that prevents water limits from stopping growth.
Both positions carry visible political risks. Restrictions can constrain housing construction and intensify affordability complaints, while desalination and major infrastructure require money, outside agreements and long delivery timelines. Campaigns that hide those tradeoffs will leave voters with promises that cannot survive the first implementation decision.
November will determine who controls Arizona’s water agencies and represents the state in the next Colorado River negotiations. Household bills, suburban development, agricultural survival and commercial investment will all follow from that authority. Water has become a governor’s race because Arizona’s economic map now depends on who decides where its next gallon comes from.