Idaho Code § 43-803
To constitute an election as provided in section 43-801, Idaho Code, the irrigation district shall, at least ten (10) days prior to the date of the issuance of tax deed to the county treasurer on behalf of any taxing unit, or at least ten (10) days prior to the date of any sale of real property acquired by a county on account of delinquent taxes, file with the county treasurer and the clerk of the board of county commissioners of the county a notice in writing, in substantially the following form:
"Notice is hereby given that .. irrigation district has elected to accept a cancellation of taxes in favor of said irrigation district and constituting part of the taxes delinquent upon which tax deed may or has issued and in lieu thereof to retain title to the water right for the purchase of which the assessments in favor of the irrigation district were levied. The property affected by this notice is described as follows, to wit:
(..)"
Upon the issuance of a tax deed to any lands within an irrigation district organized as aforesaid for delinquent taxes or a sale of any lands acquired by a county on account of delinquent taxes, the receipt of this notice by the county treasurer or the clerk of the board of county commissioners of the county, substantially in form as herein provided, shall be recorded in the chain of title of the subject real property and shall obligate the officer accepting a deed on behalf of a taxing unit and/or the officers executing a deed to lands acquired by the county for delinquent taxes, to reserve title to the water right and title to said water right shall thereupon vest in the irrigation district subject to redemption as hereinafter provided; provided, however, said irrigation district shall as a prerequisite to withdrawal of said water right from the lands and revesting thereof in said district, pay to the county the amount paid by the county to the state as state taxes levied against said lands from which said water right is to be withdrawn.
Idaho Code § 43-803