AZ HB2174

Reduces the maximum pump capacity for exempt wells from 35 gallons per minute to 20 gallons per minute across multiple Arizona Revised Statutes sections.

Applies the reduced capacity threshold to wells drilled before April 28, 1983, wells drilled after that date, and wells used for Colorado River water pumping and reporting purposes.

Maintains exemptions from permitting requirements for qualifying small non-irrigation wells but with the lower 20 gallon-per-minute capacity limit.

Updates definitions and eligibility requirements throughout Arizona water law to reflect the new exempt well capacity standard, including provisions for well registration and reporting in active management areas.