Proposition 4 - US Mexico Border Grant Program
Background
The Safe Drinking Water, Wildfire Prevention, Drought Preparedness, and Clean Air Bond Act of 2024 (Prop 4) was approved by California voters in the general election on November 4, 2024. Among other funds, Prop 4 provided $50 million for grants to projects that will address water quality problems arising in the California-Mexico cross border rivers and coastal waters. Prop 4 allows up to seven percent (7%) for administrative cost and there are additional statewide bond costs. After accounting for these costs, there is $46,151,000 available for eligible projects.
- Final Adopted Guidelines
- Application Required Attachments
- US Mexico Border Application Webinar (Virtual)
When: Jun 24, 2026 from 10:00-11:30 AM Pacific Time
Register in advance for this webinar by clicking the link below. You should receive a link to join the webinar once registration is complete.
https://waterboards.zoom.us/webinar/register/WN_giRxRsZ_T8O0k08LvWbofw
The documents below are provided for historical reference and are no longer considered active program materials. These records are being retained to provide background information regarding the Proposition 4 - US Mexico Border Grant Program.
- Draft Guidelines - Posted February 2, 2026 for Public Comment
- Revised Notice - The first revised notice extended the comment period until March 13 at Noon and added the two workshop dates. The second revised notice removed the regulations.
- Presentation from March 5 and 6 Workshops - English Version and Spanish Version
- Documents for April 21, 2026 Board Meeting
- Proposed Final Guidelines - Clean Version
- Response to comments - Received during Public Comment Period for Draft Guidelines
Stay informed
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Program Contact
For general inquiries, contact:
Jennifer Toney
Senior Water Resources Control Engineer
(916) 322-9598
jennifer.toney@waterboards.ca.gov
Division of Financial Assistance
State Water Resources Control Board
P.O. Box 944212
Sacramento, CA 94244-2120
