Tucson Rainwater Harvesting Rebate

Tucson gets most of its rain in two short seasons, the summer monsoon and a wetter winter stretch, and a lot of that water runs straight off roofs and driveways into the street. The Tucson Water Rainwater Harvesting Rebate is built to keep that water on your property instead, either soaking into planted basins or stored in a tank for later. It is a real rebate worth up to $2,000, but there are a couple of steps that trip people up, so here is how it actually works.

What the rebate pays

The Tucson Water Rainwater Harvesting Rebate pays up to $2,000 per residential customer (Tucson Water Residential Customer Rebates program page, last verified July 2026). The program covers two kinds of systems, and you can combine them as long as the total stays at or under the $2,000 cap:

• •Passive systems are earthworks: shallow basins, swales, and rain gardens that slow runoff and let it soak into the soil where plants can use it.
• •Active systems are gutters plus a cistern or tank that stores roof runoff you can draw on later.

Tucson Water has published per-gallon rates that scale with how much rain your system is sized to capture. Those exact per-gallon figures move over time, so confirm the current amount and the sizing rules on Tucson Water's official program page before you plan around a specific dollar number.

The free workshop comes first

This is the step that surprises most applicants. Before you can apply, you must attend a free Rainwater Harvesting Incentives Program workshop. It runs a few hours and walks through system types, sizing, and how the rebate paperwork works. Only after the workshop do you submit a site plan for pre-approval, install the system, and then file for the rebate. Skip the workshop and the application will not move forward, so put it at the top of your list.

Who qualifies

The rebate is for single-family residential Tucson Water customers. If Tucson Water is the utility on your bill and your home is single-family residential, you are in the eligible group. Confirm the current eligibility details on the official program page, since customer classes and requirements can be adjusted between funding cycles.

How to apply, in order

• •Attend the free rainwater-harvesting workshop (required first step).
• •Submit your site plan or design for pre-approval before installing anything.
• •Wait for written pre-approval from Tucson Water.
• •Install the passive earthworks and/or active cistern system.
• •Submit your completed documentation to receive the rebate, up to the $2,000 cap.

Check the application window before you plan

This is not the turf-removal rebate

Tucson Water runs a separate grass-removal rebate, and it is easy to confuse the two. The turf-removal rebate is for commercial and multifamily customers only, not single-family homes, and it pays $5 per square foot of ornamental grass removed, funded through a Water Infrastructure Finance Authority of Arizona (WIFA) grant. If you are a homeowner, that program is not the one for you. The Rainwater Harvesting Rebate covered here is the residential program. If you have seen a claim that a residential turf rebate ended, do not take it as fact. Confirm the status of any grass-removal program directly with Tucson Water Conservation at (520) 791-4331 (conservation@tucsonaz.gov).

Pairing harvested rain with desert natives

A passive basin works best when it is planted, because roots open up the soil and the plants use the water you just captured. Tucson sits in the Sonoran Desert, and several low-water plants native to this region are good candidates for a rain basin or the area a cistern drains toward. Desert willow (Chilopsis linearis) and velvet mesquite (Prosopis velutina) are native Sonoran Desert trees that handle basin edges well, and penstemons and brittlebush (Encelia farinosa) fill in the sunny lower layers (native ranges per the Lady Bird Johnson Wildflower Center). Match plant placement to how wet each part of the basin stays: the deepest, wettest spots suit thirstier natives, and the drier upper edges suit the toughest ones. A rain-fed native basin is also an easy HOA-friendly look, since it reads as an intentional, planted garden rather than a bare hole.

Last verified

The up-to-$2,000 amount, the workshop requirement, and the eligibility rules here reflect the Tucson Water Rainwater Harvesting Rebate as of July 2026. Rebate programs change funding cycles, amounts, and application windows, so confirm the current terms on Tucson Water's official program page before you apply.

For more Arizona rebate programs, see our Arizona Water Rebates page and the Tucson rebates hub.