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The 303(d) List of Impaired Water Bodies
Background:
| Section 303(d) of the Federal Clean Water Act requires that states develop a list of water bodies that do not meet water quality standards, establish priority rankings for waters on the list, and develop action plans, called Total Maximum Daily Loads (TMDL), to improve water quality. The list of impaired water bodies is revised periodically (typically every two years). Read the 303(d) listing policy here. 2010 List: Evaluation of Water Quality Conditions for San Francisco Bay Region. Proposed Revisions to federal Clean Water Act Section 303(d) List of Impaired Waters. View and query the final 2010 303(d) list list on the State Board website. For information about the San Francisco Regional Water Board process in preparing the 2010 303(d) list, see the documents below. |
 A surfer crosses the mouth of San Pedro Creek in Pacifica. Both San Pedro Creek and the Pacific Ocean at Pacifica State Beach are listed as impaired by coliform bacteria. (Photo by Steve Moore) |
Previous Listing Decisions
2006 List:
- 2006 CWA Section 303(d) List of Water Quality Limited Segments Approved by US EPA June 28, 2007
- US EPA's Partial Approval Letter and enclosures describing rationale for partial approval