Ariz. Rev. Stat. § 48-709
A. In addition to the powers otherwise granted to a district pursuant to this article, a district may to further the general plan:
B. This article does not authorize:
D. In connection with any power authorized by statute, the district may:
I. Notwithstanding title 34 or article 2 of this chapter, the district at the option of the district board may enter into contracts for the performance of district projects with landowners in the district after calling for bids but before publishing notice of the award of a contract if all of the following conditions are met: