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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
2008
2010
Waterbody Changes from Prior Cycle
For More Information:
South Carolina Assessment Report
State Water Quality Program
South Carolina Impaired Waters and TMDL Information
Assessed Waters of South Carolina by Watershed
Search for a waterbody within South Carolina
Features
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South Carolina 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 |
|---|---|---|
| 2002 |  8 |
9 |
| 2004 | 38 |
39 |
| 2007 | 46 |
52 |
| 2010 | 98 |
108 |
South Carolina 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 |  359 |
| Mercury | 151 |
| Cause Unknown - Impaired Biota | 147 |
| Metals (other than Mercury) | 131 |
| Organic Enrichment/Oxygen Depletion | 129 |
| pH/Acidity/Caustic Conditions | 75 |
| Turbidity | 50 |
| Nutrients | 49 |
| Algal Growth | 13 |
| Polychlorinated Biphenyls (PCBs) | 4 |
| Ammonia | 2 |
Total: 1,110 Causes of Impairment
South Carolina 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 |
|---|---|---|
| Fecal Coliform |  447 |
453 |
| Biochemical Oxygen Demand (BOD) | 23 |
23 |
| Dissolved Oxygen | 4 |
4 |
| Ammonia | 3 |
3 |
| NH3-N | 2 |
2 |
| Oxygen Demand | 2 |
2 |
| pH | 2 |
2 |
| Chemical Oxygen Demand (COD) | 1 |
1 |
| Phosphorus | 1 |
1 |
| Total Suspended Solids (TSS) | 1 |
1 |
Total: 486 TMDLs; 492 Causes of Impairment Addressed
South Carolina 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 | 4 |
4 |
| 1999 | 20 |
20 |
| 2000 | 1 |
1 |
| 2001 | 15 |
15 |
| 2002 | 14 |
14 |
| 2003 | 16 |
16 |
| 2004 | 172 |
172 |
| 2005 | 135 |
135 |
| 2006 | 25 |
30 |
| 2007 | 6 |
6 |
| 2008 | 4 |
4 |
| 2010 | 29 |
29 |
| 2011 | 22 |
22 |
| 2012 | 16 |
17 |
| 2013 | 7 |
7 |
Total: 486 TMDLs; 492 Causes of Impairment Addressed