Water Quality Control Plan for the Central Coastal Basin (Basin Plan)

The Water Quality Control Plan for the Central Coastal Basin (Basin Plan) is the Board's master water quality control planning document.  It designates beneficial uses and water quality objectives for waters of the State, including surface waters and groundwater.  It also includes programs of implementation to achieve water quality objectives.

Basin Plan

The current Basin Plan consists of the 2017 Basin Plan edition and all amendments fully-approved after March 2017 as listed below:

Basin Plan amendments approved and in effect (approved by Office of Administrative Law) since March 2017:

  • Resolution No. R3-2016-0003. Amendment for TMDL for Sediment Toxicity and Pyrethroid Pesticides in the Lower Salinas Watershed. July 14, 2017. (Project Page)
  • Resolution No. R3-2017-0014. Amendment to Update the Turbidity Water Quality Objective Units. July 14, 2017. (See Below - Amendment to Revise Turbidity Water Quality Objective Units)


Previous Editions of the Basin Plan


Adopted Amendments Pending Further Approval

Basin Plan amendments do not become effective until sequentially adopted by the Regional Water Board, and approved by the State Water Board and the California Office of Administrative Law. Amendments containing new or revised water quality standards also require the approval of the U.S. Environmental Protection Agency.

Basin Plan Amendments Approved by the Central Coast Regional Water Board:


Amendments Under Development

Amendment to Improve and Clarify Prohibition Discharge Language

Amendment to Revise Turbidity Water Quality Objective Units

Amending the Water Quality Control Plan for the Central Coastal Basin to Revise Beneficial Use Designations and to Make Editorial Changes.

Triennial Review

The California Water Code and the Clean Water Act and require Basin Plans to be reviewed and updated periodically (at a minimum every three years).

Go to the Central Coast Basin Plan Triennial Review Process page.


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