HI HB915

Expands the Board of Agriculture's powers to include investigating and surveying the availability of nonpotable water resources for irrigation projects

Authorizes the Commission on Water Resource Management to require dual line water supply systems (separate potable and nonpotable distribution lines) in new residential and mixed-use developments located in designated water management areas, in addition to existing industrial and commercial developments

Allows residential and mixed-use developments approved after June 30, 2025 to be included in irrigation projects, provided water is sourced from county-supplied R-1 recycled water

Preempts any state or county rules that restrict dual line water supply system installation in residential or mixed-use developments and requires the Department of Health, Board of Agriculture, and counties to update conflicting regulations

Permits irrigation of single-family residential homes with recycled water when a recycled water manager is designated, notwithstanding existing Department of Health guidelines