In such districts, the holder or holders of any title, or evidence of title, representing one-half (1/2) or more of any body of lands adjacent to the boundary of the irrigation district, may, in lieu of proceeding for annexation under chapter 10, title 43, Idaho Code, file with the board of directors of such district a petition in writing praying that said lands may be annexed to the district for the sole purpose of receiving domestic water therefrom. Such annexation is herein referred to as "domestic annexation." The petition shall describe the lands, and shall also describe the several parcels owned by the petitioners.
Idaho Code § 43-2402