Ariz. Rev. Stat. § 49-355
D. Before disbursing monies to an authorized recipient pursuant to this section, the water infrastructure finance authority of Arizona shall enter into a written grant agreement with the recipient. The terms of the agreement shall include at least the following:
F. The water infrastructure finance authority of Arizona may require repayment to this state of a portion or all of the grant monies with interest at an agreed rate and on agreed terms. The repayment may be required if either of the following applies: