A.R.S. § 48-3158: Action to recover assessment

The district may, if it so elects, commence an action in a court of competent jurisdiction for recovery of the amount of any delinquent assessment or installment thereof. The remedies provided by this article shall be cumulative. No proceedings for the collection and enforcement of an assessment or an installment thereof shall be invalidated because of any omission or informality if the substantial rights of the delinquent landowner have been recognized and any sale made has been fairly conducted.