![[logo] US EPA](http://www.epa.gov/epafiles/images/logo_epaseal.gif){kind=logo}
Return to home page
On This Page
On This Page
- Previously 303(d)-Listed Waters Now Attaining All Applicable Water Quality Standards
- Causes of Impairment for 303(d) Listed Waters
- Cumulative TMDLs by Pollutant
- Cumulative Number of TMDLs
Data are also available for these cycles:
2002
2004
2010
Waterbody Changes from Prior Cycle
For More Information:
California Impaired Waters and TMDL Information
Assessed Waters of California by Watershed
Search for a waterbody within California
Features
- About This Database (Integrated Report)
- Assessing Water Quality (Questions and Answers)
- Integrated Reporting Guidance
- Previous National Water Quality Reports
- EnviroMapper for Water
- AskWATERS
- EPA WATERS Homepage
- Exchange Network
- Assessment Database
- Statewide Statistical Surveys
- How's My Waterway Local Search tool
- Pollution Categories Summary Document
California Previously 303(d)-Listed Waters Now Attaining All Applicable Water Quality Standards
Description of this table| NOTE: Click on the underlined "Number of Waters Attaining" value for a detailed list of those previously 303(d)-listed waters now attaining all applicable water quality standards. | ||
| Year Attaining | Number of Waters Attaining | Number of Causes of Impairment Addressed |
|---|---|---|
| 2011 |  12 |
15 |
California 2006 Causes of Impairment for 303(d) Listed Waters
Description of this table| NOTE: Click on a cause of impairment (e.g. pathogens) to see the specific state-reported causes that are grouped to make up this category. Click on the "Number of Causes of Impairment Reported" to see a list of waters with that cause of impairment. | |
| Cause of Impairment Group Name | Number of Causes of Impairment Reported |
|---|---|
| Pesticides |  312 |
| Pathogens | 245 |
| Metals (other than Mercury) | 228 |
| Nutrients | 140 |
| Salinity/Total Dissolved Solids/Chlorides/Sulfates | 103 |
| Polychlorinated Biphenyls (PCBs) | 103 |
| Mercury | 101 |
| Sediment | 87 |
| Total Toxics | 77 |
| Organic Enrichment/Oxygen Depletion | 47 |
| Toxic Organics | 45 |
| Temperature | 37 |
| Trash | 37 |
| Ammonia | 33 |
| Dioxins | 27 |
| pH/Acidity/Caustic Conditions | 27 |
| Toxic Inorganics | 24 |
| Nuisance Exotic Species | 24 |
| Other Cause | 20 |
| Algal Growth | 17 |
| Taste, Color and Odor | 15 |
| Cause Unknown - Impaired Biota | 12 |
| Turbidity | 8 |
| Flow Alteration(s) | 6 |
| Habitat Alterations | 5 |
| Fish Consumption Advisory | 3 |
| Oil and Grease | 2 |
| Noxious Aquatic Plants | 1 |
| Cause Unknown - Fish Kills | 1 |
Total: 1,787 Causes of Impairment
California Cumulative TMDLs by Pollutant
This chart includes TMDLs since October 1, 1995.
Description of this tableTotal: 1,568 TMDLs; 1,972 Causes of Impairment Addressed
California Cumulative Number of TMDLs
EPA Fiscal Year starts October 1 and ends September 30.
Description of this table
| NOTE: Click on the underlined "Number of TMDLs Completed" value for a detailed list of the TMDLs for the fiscal year. | ||
| Fiscal Year | Number of TMDLs | Number of Causes of Impairment Addressed |
|---|---|---|
| 1998 |  13 |
13 |
| 1999 | 15 |
15 |
| 2000 | 7 |
9 |
| 2001 | 4 |
4 |
| 2002 | 113 |
122 |
| 2003 | 148 |
241 |
| 2004 | 92 |
174 |
| 2005 | 30 |
35 |
| 2006 | 224 |
264 |
| 2007 | 142 |
144 |
| 2008 | 81 |
81 |
| 2009 | 80 |
87 |
| 2010 | 55 |
74 |
| 2011 | 114 |
129 |
| 2012 | 416 |
537 |
| 2013 | 34 |
43 |
Total: 1,568 TMDLs; 1,972 Causes of Impairment Addressed