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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:
2004
2006
2008
2010
Waterbody Changes from Prior Cycle
For More Information:
Alabama Assessment Report
State Water Quality Program
Alabama Impaired Waters and TMDL Information
Assessed Waters of Alabama by Watershed
Search for a waterbody within Alabama
Features
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- Pollution Categories Summary Document
Alabama 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 |
|---|---|---|
| 2008 |  1 |
1 |
| 2011 | 3 |
3 |
Alabama 2002 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 |
|---|---|
| Organic Enrichment/Oxygen Depletion |  63 |
| Sediment | 58 |
| Pathogens | 57 |
| Nutrients | 36 |
| Metals (other than Mercury) | 19 |
| Habitat Alterations | 17 |
| pH/Acidity/Caustic Conditions | 12 |
| Mercury | 11 |
| Ammonia | 7 |
| Toxic Organics | 6 |
| Total Toxics | 5 |
| Pesticides | 3 |
| Salinity/Total Dissolved Solids/Chlorides/Sulfates | 2 |
| Turbidity | 2 |
| Cause Unknown - Impaired Biota | 1 |
| Taste, Color and Odor | 1 |
| Polychlorinated Biphenyls (PCBs) | 1 |
Total: 301 Causes of Impairment
Alabama 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 |
|---|---|---|
| Carbonaceous Bod |  59 |
60 |
| Fecal Coliform | 48 |
48 |
| Phosphorus, Total | 45 |
61 |
| Nitrogenous BOD | 31 |
31 |
| Sediment | 28 |
31 |
| Nitrogen, Total | 18 |
19 |
| Escherichia Coli (E. Coli) | 15 |
15 |
| NH3-N | 10 |
12 |
| Ammonia | 5 |
5 |
| Enterococcus Bacteria | 5 |
5 |
| Aluminum | 3 |
3 |
| Iron | 3 |
3 |
| Pathogens | 3 |
3 |
| Endosulfan | 2 |
2 |
| Methyl Parathion | 2 |
2 |
| pH | 2 |
2 |
| Atrazine | 1 |
1 |
| Chemical Biological Oxygen Demand 5 Day Average | 1 |
1 |
| Chlorpyrifos | 1 |
1 |
| Copper | 1 |
1 |
| Lead | 1 |
1 |
| Priority Organics - PCBs | 1 |
1 |
| Turbidity | 1 |
1 |
| Zinc | 1 |
1 |
Total: 287 TMDLs; 310 Causes of Impairment Addressed
Alabama 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 |
|---|---|---|
| 1997 | 20 |
22 |
| 2003 | 113 |
116 |
| 2004 | 27 |
27 |
| 2005 | 38 |
41 |
| 2006 | 4 |
4 |
| 2007 | 24 |
24 |
| 2008 | 8 |
9 |
| 2009 | 31 |
45 |
| 2010 | 5 |
5 |
| 2011 | 12 |
12 |
| 2012 | 5 |
5 |
Total: 287 TMDLs; 310 Causes of Impairment Addressed