House Engrossed groundwater model; stormwater recharge; AMAs State of Arizona House of Representatives Fifty-seventh Legislature First Regular Session 2025 HOUSE BILL 2270 AN ACT Amending title 45, chapter 2, article 9, Arizona Revised Statutes, by adding section 45-581; RELATING to groundwater MANAGEMENT. (TEXT OF BILL BEGINS ON NEXT PAGE) House Engrossed groundwater model; stormwater recharge; AMAs State of Arizona House of Representatives Fifty-seventh Legislature First Regular Session 2025 HOUSE BILL 2270 House Engrossed groundwater model; stormwater recharge; AMAs State of Arizona House of Representatives Fifty-seventh Legislature First Regular Session 2025 HOUSE BILL 2270 AN ACT Amending title 45, chapter 2, article 9, Arizona Revised Statutes, by adding section 45-581; RELATING to groundwater MANAGEMENT. (TEXT OF BILL BEGINS ON NEXT PAGE) Be it enacted by the Legislature of the State of Arizona: Section 1. Title 45, chapter 2, article 9, Arizona Revised Statutes, is amended by adding section 45-581, to read: START_STATUTE45-581. Groundwater model; projected use; stormwater recharge; rules A. The director shall adopt rules to update the department's groundwater modeling for active management areas. The updated rules shall account for any natural, incidental or artificial stormwater recharge to the groundwater basin created through the development of new or existing infrastructure. B. The director shall assume that the stormwater RECHARGE generated by the development of new or existing infrastructure will OFFSET a portion of future groundwater use. C. The director shall annually update the groundwater model for active management areas to reflect new natural, incidental or artificial stormwater recharge. END_STATUTE Be it enacted by the Legislature of the State of Arizona: Section 1. Title 45, chapter 2, article 9, Arizona Revised Statutes, is amended by adding section 45-581, to read: START_STATUTE45-581. Groundwater model; projected use; stormwater recharge; rules A. The director shall adopt rules to update the department's groundwater modeling for active management areas. The updated rules shall account for any natural, incidental or artificial stormwater recharge to the groundwater basin created through the development of new or existing infrastructure. B. The director shall assume that the stormwater RECHARGE generated by the development of new or existing infrastructure will OFFSET a portion of future groundwater use. C. The director shall annually update the groundwater model for active management areas to reflect new natural, incidental or artificial stormwater recharge. END_STATUTE