Tucson Water Gray Water System Rebate

Install a permanent gray water irrigation system that reuses water from clothes washer, tub, shower or bathroom sink to water landscape.

• Attend the free Gray Water Rebate Workshop (Watershed Management Group, online or in person) before installing
• Submit a project plan with the application
• Itemized receipts or invoices for materials and contracted services
• W-9 if paid by check; 1099-MISC issued for $2,000+ in a year
• Pressurized/pumped systems need a Reduced Pressure Assembly backflow device (call 520-791-2650)
• Permit required to modify drainage plumbing from any fixture; tapping existing washer gravity stub-out does not (520-791-5550)
• Not covered: hoses/non-permanent fixtures, bathroom remodel materials, workshops, plants, sales tax
• Apply within 1 year of purchasing materials

A project plan is submitted with the application; specific contents not published on the page.

Native plant lists for the area: Tucson

1. 1Confirm address has active Tucson Water service
2. 2Attend a Gray Water Rebate Workshop at watershedmg.org/events
3. 3Prepare project plan
4. 4Buy and install the permanent system, getting any needed backflow assembly or permit
5. 5Gather itemized receipts/invoices and W-9
6. 6Submit the Gray Water System Rebate form (docs.tucsonaz.gov/Forms/Water-Rebate-Programs-GW)

Apply no later than 1 year after purchase of materials; payment timing not published

• https://www.tucsonaz.gov/Departments/Tucson-Water/Conservation/Residential-Customer-Rebates/Gray-Water-System-Rebate (official page)
• https://www.tucsonaz.gov/water/rebate

Last checked October 17, 2026. See something out of date? Tell us.

Sow is not affiliated with any of these agencies or utilities. Amounts and rules change, often at the start of a fiscal year, so confirm the details on the official page before you start a project. How we research these programs