California grants › Environment & Water

State Water Resources Control Board

Proposition 4 – Water Recycling

Source: California Grants Portal, ID 184101. Listing last updated by the grantor Jul 7, 2026. Rebuilt here Oct 30, 2026.

Who can apply

NonprofitPublic AgencyTribal Government

Local public agencies, 501(c)(3) nonprofit organizations qualified to do business in California, Public Utilities, Federally and non-federally recognized Native American tribes on the Native American Heritage Commission’s list, and Mutual water companies.

Where: All community types are eligible for funding. This includes small and large communities, non-disadvantaged, disadvantaged, and severely disadvantaged communities.

Purpose

The purpose of the funding is to provide technical and financial assistance to local agencies for the construction of water recycling projects that promote the beneficial use of treated municipal wastewater in order to augment fresh water supplies in California.

Description

Eligible Applicants: Local public agencies, 501(c)(3) nonprofit organizations qualified to do business in California, Public Utilities, Federally and non-federally recognized Native American tribes on the Native American Heritage Commission’s list, and Mutual water companies. Eligible Uses: Eligible projects include recycled water treatment; recycled water storage, distribution, and pumping; groundwater recharge; indirect potable reuse; surface water augmentation; and large scale recycled water projects. Ineligible Uses: Operation and maintenance costs.  Eligible Costs:  Construction Grant Funding - Construction costs only Construction Grant Funding - Large Scale Recycled Water Projects - Planning, Design, and Construction. Eligible Communities: All community types are eligible for funding.  This includes small and large communities, non-disadvantaged, disadvantaged, and severely disadvantaged communities. For more information, please review the Water Recycling Funding Program (WRFP) Guidelines:  https://www.waterboards.ca.gov/water_issues/programs/grants_loans/docs/wrfp_guidelines.pdf

Important dates

Opened
Jul 6, 2025
Application deadline
Jun 30, 2030
Expected award announcement
June 30, 2030
Period of performance
Expire June 30, 2033

Funding details

Total estimated available
$150,000,000.00
Estimated amount per award
Between $1.00 and $15,000,000.00
Expected number of awards
Dependant on number of submissions received, application process, etc.
Letter of intent required
No
Matching funds
50%
Funding source
State
Funding source notes
Proposition 4 Water Recycling
Funding method
Reimbursement(s)
Funding method notes
Grant is calculated at 35% of eligible construction costs up to $15 million per project.

How to apply

Read the full guidelines on the grantor's site, then apply there. Nothing is submitted through this site.

Submission: url: https://faast.waterboards.ca.gov/

Questions about this grant: email: [email protected]; tel: 1-916-324-8404;

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