REFERENCE TITLE: rainwater harvesting program





State of Arizona

House of Representatives

Fifty-fifth Legislature

Second Regular Session





HB 2812


Introduced by

Representatives Liguori: Abraham, Andrade, Cano, Dalessandro, Fernandez B, Hernandez D, Longdon, Mathis, Quiñonez, Schwiebert, Solorio



An Act


amending title 45, chapter 1, Arizona Revised Statutes, by adding article 2; appropriating monies; relating to the department of water resources.





Be it enacted by the Legislature of the State of Arizona:

Section 1. Title 45, chapter 1, Arizona Revised Statutes, is amended by adding article 2, to read:


START_STATUTE45-121. Rainwater harvesting grant program; eligibility

A. the rainwater harvesting grant program is established in the department to assist persons in installing passive or active systems to collect and retain rainwater on site. Applicants shall submit project plans for approval by the department before receiving any grant monies for reimbursement. The department shall make available grant monies as reimbursements for projects based on the submittal date and the suitability of a project plan.

B. The department shall establish an application form and project plan requirements. To receive approval and grant monies for a project, the project must comply with all applicable zoning, permitting, backflow prevention and use requirements for the project at that location.

C. The rainwater harvesting grant program shall provide for two levels of grants as follows based on the type of project:

1. For level 1 grants, the following apply:

(a) The project is a simple and passive rainwater harvesting system.

(b) grant monies may be used to reimburse up to fifty percent or a maximum of $500 of the cost of eligible materials and labor.

(c) Costs eligible for reimbursement include:

(i) Surface, subsurface and conveyance features.

(ii) Mulch, soil amendments and rocks and boulders for reinforcement.

(iii) Equipment rental such as tillers, jackhammers and trenchers.

(iv) Permit costs and costs for curb cuts and coring.

(v) Labor from persons who are licensed by the registrar of contractors in the specific trade or field appropriate to the work performed.

2. For level 2 grants, the following apply:

(a) The project is an active and more complex rainwater harvesting system than a level 1 system.

(b) grant monies may be used for the full cost of the rainwater harvesting system based on the capacity of the rain storage tank, up to a maximum of $2,000 as follows:

(i) For a tank with a capacity of fifty to seven hundred ninety-nine gallons, $.25 for each gallon of tank capacity.

(ii) For a tank with a capacity of eight hundred gallons or more, $1 for each gallon of tank capacity.

(iii) The $.25 and $1 per gallon capacity rebate amounts include the cost of the tank, gutter, tank foundation, overflow and miscellaneous materials that make up the system.

D. Grant monies do not cover and the following are not reimbursable costs:

1. Conveyance features that direct rainwater off-site without entering an appropriately-sized landscape retention feature or storage tank.

2. Overflow features such as a rock or mulch basin.

3. Removing and replacing old gutters.

4. Importing soil to create passive rain garden practices.

5. Purchasing or delivering gravel or decomposed granite as a surface cover.

6. Purchasing or installing pressurizing pumps or associated controls.

7. Purchasing or installing irrigation systems or backflow prevention devices that are otherwise required for a site with a pump system for distributing nonmunicipal potable water.

8. Purchasing or installing landscaping materials such as plants, edging or decorative gravel.

9. Labor that is provided by the owner, a handyman or any other person who is not a registered contractor in this state.

10. Purchasing tools such as shovels, rakes, drill bits and garden hoses.

11. Used or reconditioned tanks and cisterns, unless approved by the department.

E. The department may inspect and audit a project that receives grant monies pursuant to this section. END_STATUTE

Sec. 2. Appropriation; department of water resources; rainwater harvesting grant program; exemption

A. The sum of $1,000,000 is appropriated from the state general fund in fiscal year 2022-2023 to the department of water resources for funding and administering the rainwater harvesting grant program established by section 45-121, Arizona Revised Statutes, as added by this act.

B. The appropriation made in subsection A of this section is exempt from the provisions of section 35-190, Arizona Revised Statutes, relating to lapsing of appropriations.