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HB 2551

grandfathered right; Willcox AMA; extension

57th Legislature - First Regular Session Introduced by Pamela Carter and 2 co-sponsors

Arizona bill extending grandfathered water rights in Willcox AMA vetoed by Governor, affecting agricultural and municipal water users in water-stressed region.

Vetoed by Governor
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Bill Summary · HB 2551

Legislative bill overview

HB 2551 extends grandfathered rights for the Willcox Active Management Area (AMA), a water management district in southeastern Arizona. The bill passed both chambers of the legislature but was vetoed by the Governor on April 18, 2025.

Why is this important

Water rights in Arizona's AMAs are heavily regulated, and grandfathered rights allow existing users to continue historical water use even as new restrictions are imposed. This extension affects agricultural and municipal water users in the Willcox area, one of Arizona's most water-stressed regions, impacting long-term water availability and competing claims between farming, municipal growth, and conservation.

Potential points of contention

  • Agricultural vs. municipal water competition: Extending grandfathered rights may prioritize existing agricultural users over growing municipal water demands in the region
  • Groundwater depletion concerns: The Willcox AMA has experienced significant aquifer decline, and extending historical use rights could worsen long-term sustainability
  • Governor's rationale for veto: The veto suggests the administration opposed extending grandfathered rights, likely due to water conservation priorities or disputes over resource allocation

Compiled from official sources — confirm details with the bill’s official record.

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