Ariz. Rev. Stat. § 49-360
A. The department shall establish a monitoring assistance program to assist public water systems in complying with monitoring requirements under the federal safe drinking water act (P.L. 93-523; 88 Stat. 1660; P.L. 95-190; 91 Stat. 1393; P.L. 104-182; 110 Stat. 1613; 42 United States Code sections 300f through 300j-25), as amended. The program shall provide for the collection, transportation and analysis of baseline samples from public water systems in a frequency sufficient to keep the systems in compliance with the federal safe drinking water act requirements. The department may adopt rules to establish criteria for a public water system to opt out of the monitoring assistance program. The department may conduct additional sampling for a system that triggers a detection limit set by rule to comply with the federal safe drinking water act. At a minimum, the program shall include monitoring for the following categories of contaminants:
B. The department shall contract with one or more private parties or statewide nonprofit organizations representing water systems to implement the monitoring assistance program subject to available funding. Contracts shall be awarded for up to three years. Entities with which the department contracts shall:
G. The monitoring assistance fund is established consisting of fees collected from participating public water systems pursuant to subsection F of this section and federal monies to assist in carrying out the purpose of this section. The director shall administer the fund. If the fund has a surplus after execution of the previous year's contract, any surplus of more than the average annual operating costs as measured by the three preceding fiscal years in any year shall be used to reduce the fee for the subsequent year in a manner consistent with the program invoicing system. Monies in the fund shall be used to pay the monitoring assistance program contractors, the environmental laboratories used for the purposes of this section and administrative costs incurred by the department. Monies in the fund are exempt from lapsing pursuant to section 35-190. Interest earned on monies in the fund shall be credited to the fund. The allowable administrative costs of the department are limited to not more than fifteen percent of monies deposited in the fund annually or $184,000, whichever is less. For the purposes of this subsection, "administrative costs" includes only those costs necessary to do the following: