Ariz. Rev. Stat. § 48-704
A. Within thirty days after adoption of the resolution of intent to form a district, any person claiming an interest in real property that the resolution discloses is situated in the district may file a written objection with the clerk of the municipality or county that adopted the resolution before 5:00 p.m. on the business day preceding the date and time set for the hearing on the question of formation of the district. The objection may raise one or more of the following: