Triennial Review

The federal Clean Water Act (Section 303 (c)) and the Porter-Cologne Water Quality Control Act require the Basin Plan to be reviewed and updated periodically (at a minimum every three years). The Regional Board review process includes identification of issues that may enhance water quality protection and presentation of a priority list of issues at a public hearing. The priority list of issues, referred to as the Triennial Review Priority List, includes:

• A (generalized) ranking of water quality issues;
• A brief description of each water quality issue;
• Identification of water quality issues that can be completed with existing resource allocations over a three-year period; and
• Identification of water quality issues requiring additional resources to complete.