Amendments Under Development

Amendments to Establish Water Quality Objectives for Disinfection Byproducts and Disinfectant Residuals

• April 14, 2026
• Notice of Opportunity to Comment (English | Spanish)
• Proposed Resolution
• Proposed Basin Plan Amendments Project Report and CEQA Environmental Checklist
• December 4, 2025
  • Public workshop and CEQA scoping meeting presentation slides
• September 25, 2025
  • Notice of Public Workshop and CEQA Scoping Meeting, and Notice of Opportunity to Comment (English | Spanish)

TMDL Projects

• Elkhorn Slough and Bennett Slough biostimulatory substances TMDL
• Pesticide Water Quality Criteria Development
• Santa Maria River watershed neonicotinoid TMDL