Arizona AG Kris Mayes: MenLo Digital Lawsuit Planned Over Nuisance

• Arizona Attorney General Kris Mayes has threatened legal action against MenLo Digital over its AI data center in Ahwatukee, citing public nuisance concerns.
• Residents near the MenLo Digital construction site report significant disturbances, including loud noise and dust, leading to health issues.
• Mayes is investigating the data center, leveraging Arizona's public nuisance law, which she has used in previous cases.
• The AG warns that the proliferation of nearly 50 new data centers statewide could drastically increase water demand by over 450% and strain energy supplies by 32%.
• Concerns exist that Arizona's Proposition 207 could limit the city of Phoenix's ability to impose stricter regulations on data center developments.

Attorney General Mayes has explicitly stated her willingness to leverage Arizona's public nuisance laws in response to such community impacts.

Arizona Attorney General Kris Mayes recently signaled her intent to pursue legal action against MenLo Digital, an AI data center developer, during a public forum addressing community concerns. The specific target is the MenLo Digital AI hyperscale project currently under construction in Ahwatukee, a neighborhood situated in south Phoenix. This announcement came amidst a town hall meeting held in Mesa, Arizona, on October 14, 2026, where approximately 150 Phoenix valley residents gathered to voice their grievances regarding the rapid expansion of data centers across the region.

A significant portion of the attendees, over half, expressed direct concerns about the MenLo Digital facility. Ana Marshall, an Ahwatukee resident whose home is merely 150 feet from the construction site, detailed severe disturbances. She reported experiencing loud noise late at night, which she likened to torture, and has recorded levels as high as 110 decibels inside her son's bedroom. Furthermore, Marshall indicated that the constant dust generated by the construction has led to multiple sinus infections for her children since April, necessitating several doctor visits.

Attorney General Mayes has explicitly stated her willingness to leverage Arizona's public nuisance laws in response to such community impacts. These statutes empower the Attorney General to initiate legal proceedings against any activity or condition that disrupts the health, safety, peace, or property rights of a community. Mayes has a precedent for this approach, having previously utilized public nuisance claims against Fondomonte, a Saudi Arabian megafarm accused of excessive water consumption in the west valley for alfalfa cultivation. Her current investigation into the Ahwatukee data center, she noted, seemed like an "obvious" course of action.

This aggressive stance has not been without political pushback. In May 2024, state Republicans attempted to impeach Mayes, alleging a "weaponization" of the public nuisance law and an overuse of town halls for political purposes. Despite these challenges, Mayes maintains that while she personally lacks the authority to impose a moratorium on new data center approvals, she has "not been shy about using nuisance laws."

The MenLo Digital project is just one of nearly 50 new data centers either under construction or in various stages of development throughout Arizona. This proliferation raises significant concerns regarding the state's already strained resources. An analysis projects that if all planned data center projects in the greater Phoenix area are completed, the region's water demand could skyrocket by over 450%. Attorney General Mayes has warned that the full operation of these facilities would not only intensify pressure on local water supplies by at least 32% but also contribute to escalating energy costs across the state.

Mayes has publicly expressed her belief that Arizona currently lacks the necessary mechanisms to adequately safeguard its communities from the adverse effects of this data center expansion. She has advocated for a "time out" to allow the state to establish proper regulatory frameworks. In August, she formally urged the Legislature and Democratic Governor Katie Hobbs to implement a moratorium on new data center approvals, underscoring the urgency of the situation.

In response to sustained community complaints, the city of Phoenix has already taken steps to mitigate disturbances from the million-square-foot MenLo Digital construction site. City inspectors have been stationed at the location, and negotiations with the contractor have resulted in commitments to reduce noise and other disruptions. These measures include rerouting construction traffic away from residential areas, imposing restrictions on early-morning deliveries, relocating employee parking, and actively monitoring noise levels around the property. City staff are also currently investigating complaints filed between September 12 and October 2 to determine if further enforcement actions are warranted.

However, some residents at the town hall voiced apprehension that Arizona's Proposition 207 could impede the city's ability to take more decisive action. This constitutional amendment, enacted in 2006, mandates that cities, counties, and state agencies compensate landowners if new land-use or zoning regulations diminish the market value of their property. This means property owners could file claims under Proposition 207 against municipalities if new ordinances were to block planned data center developments. While acknowledging these concerns, Attorney General Mayes declined to offer an opinion on the legality of Proposition 207.

Data center developers and operators in Arizona, particularly those with large water and energy footprints, should anticipate heightened regulatory scrutiny and potential legal challenges under public nuisance laws, as demonstrated by AG Mayes' actions. Compliance officers must ensure robust environmental impact assessments and community relations strategies are in place to mitigate such risks, while legal counsel should evaluate the interplay between public nuisance claims and Proposition 207 protections.

Source: Original reporting via Courthouse News