Graywater · California

City of Santa Rosa Graywater Rebate

Run by City of Santa Rosa Water (Water-Use Efficiency)

OpenLast checked October 17, 2026
What you get
$100 per qualifying fixture (materials only)
Who qualifies
Santa Rosa water account in the applicant's name for the property (property owner who is not the account holder needs the account holder's signed Tenant/Account Holder Permission Form)
Where
City of Santa Rosa water account holders.
Status
Open. Listed on city page 2026-10-17; funding status not stated.
Type of payment
Rebate
Official program page

What you do

Install a clothes washer or other graywater reuse system that irrigates your landscape through mulch basins.

Requirements

  • Pre-qualification before work
  • System must follow 2022 California Plumbing Code Chapter 15 graywater rules
  • Clothes washer systems need no permit if code-compliant; simple (under 250 gpd) and complex systems need a building permit
  • Anti-siphon at highest point, diversion valve labeled, operating manual posted
  • No potable connection, 2 in subsurface distribution, mulch basins sized for daily output, setbacks (1.5 ft property line, 2 ft buildings, 100 ft wells/waterways, 5 ft septic tank, 4 ft leach field, 3 ft above groundwater)
  • Itemized receipts; complete within 120 days
  • Keep system or refund

How to apply

  1. 1Call 707-543-3985 for pre-qualification
  2. 2Receive Graywater Eligibility Form
  3. 3Get building permit if needed; install within 120 days
  4. 4Call for post-inspection
  5. 5Sign Certificate of Participation and Approval
  6. 6Rebate paid in 4-8 weeks

Timing and deadlines

Rebate processed 4-8 weeks after post-inspection approval

120 days from eligibility form

Combining it with other programs

Cash for Grass, Pool Removal and Irrigation Efficiency cannot be paid for the same project area

Sources

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 See something out of date?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

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