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- 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
2008
2010
Waterbody Changes from Prior Cycle
For More Information:
Texas Assessment Report
State Water Quality Program
Texas Impaired Waters and TMDL Information
Assessed Waters of Texas by Watershed
Search for a waterbody within Texas
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- Pollution Categories Summary Document
Texas 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 |
|---|---|---|
| 2005 |  7 |
7 |
| 2008 | 22 |
26 |
| 2012 | 42 |
50 |
Texas 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 |
|---|---|
| Pathogens |  437 |
| Organic Enrichment/Oxygen Depletion | 149 |
| Salinity/Total Dissolved Solids/Chlorides/Sulfates | 77 |
| Mercury | 60 |
| Polychlorinated Biphenyls (PCBs) | 38 |
| pH/Acidity/Caustic Conditions | 36 |
| Cause Unknown - Impaired Biota | 29 |
| Dioxins | 28 |
| Total Toxics | 14 |
| Habitat Alterations | 7 |
| Metals (other than Mercury) | 7 |
Total: 882 Causes of Impairment
Texas Cumulative TMDLs by Pollutant
This chart includes TMDLs since October 1, 1995.
Description of this table| NOTE: Click on the underlined "Pollutant" value to see associated listed waters for which a TMDL was developed. Click on the underlined "Number of TMDLs" value to see a listing of those TMDLs for the pollutant. | ||
| Pollutant | Number of TMDLs | Number of Causes of Impairment Addressed |
|---|---|---|
| Escherichia Coli (E. Coli) |  108 |
108 |
| Enterococcus Bacteria | 15 |
15 |
| Nickel | 14 |
14 |
| Fecal Coliform | 11 |
11 |
| Carbonaceous Bod | 10 |
10 |
| Chlordane | 10 |
10 |
| Ammonia Nitrogen | 8 |
8 |
| Polychlorinated Biphenyls (PCBs) | 5 |
5 |
| DDE | 4 |
4 |
| Dieldrin | 4 |
4 |
| Total Dissolved Solids (TDS) | 4 |
4 |
| 1,1,2-Trichloroethane | 2 |
2 |
| 1,2-Dichloroethane | 2 |
2 |
| Ammonia | 2 |
2 |
| Chloride | 2 |
2 |
| DDT | 2 |
2 |
| Dissolved Oxygen | 2 |
2 |
| Heptachlor Epoxide | 2 |
2 |
| Phosphorus | 2 |
2 |
| 4,4'-DDD | 1 |
1 |
| 4,4'-DDT | 1 |
1 |
| Atrazine | 1 |
1 |
| Chlorides | 1 |
1 |
| DDD | 1 |
1 |
| Endrin | 1 |
1 |
| Heptachlor | 1 |
1 |
| Hexachlorobenzene | 1 |
1 |
| Lindane | 1 |
1 |
| Nitrogen, Total | 1 |
1 |
| PCB(s) in Fish Tissue | 1 |
1 |
| Sulfate | 1 |
1 |
| Sulfates | 1 |
1 |
| Toxaphene | 1 |
1 |
| Zinc in Shellfish | 1 |
1 |
Total: 224 TMDLs; 224 Causes of Impairment Addressed
Texas 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 |
|---|---|---|
| 2001 | 26 |
26 |
| 2002 | 2 |
2 |
| 2003 | 23 |
23 |
| 2004 | 8 |
8 |
| 2006 | 5 |
5 |
| 2007 | 35 |
35 |
| 2008 | 1 |
1 |
| 2009 | 54 |
54 |
| 2010 | 38 |
38 |
| 2011 | 17 |
17 |
| 2012 | 15 |
15 |
Total: 224 TMDLs; 224 Causes of Impairment Addressed