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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
2006
2010
Waterbody Changes from Prior Cycle
For More Information:
Indiana Assessment Report
State Water Quality Program
Indiana Impaired Waters and TMDL Information
Assessed Waters of Indiana by Watershed
Search for a waterbody within Indiana
Features
- About This Database (Integrated Report)
- Assessing Water Quality (Questions and Answers)
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- Pollution Categories Summary Document
Indiana 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 |
|---|---|---|
| 2004 |  46 |
63 |
| 2006 | 39 |
44 |
| 2008 | 108 |
159 |
Indiana 2008 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 |  930 |
| Polychlorinated Biphenyls (PCBs) | 654 |
| Cause Unknown - Impaired Biota | 419 |
| Mercury | 320 |
| Nutrients | 113 |
| Salinity/Total Dissolved Solids/Chlorides/Sulfates | 83 |
| Organic Enrichment/Oxygen Depletion | 78 |
| Algal Growth | 20 |
| Toxic Inorganics | 15 |
| Taste, Color and Odor | 12 |
| pH/Acidity/Caustic Conditions | 9 |
| Metals (other than Mercury) | 7 |
| Ammonia | 6 |
| Dioxins | 4 |
| Oil and Grease | 3 |
| Sediment | 3 |
| Pesticides | 1 |
Total: 2,677 Causes of Impairment
Indiana 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) |  800 |
800 |
| Total Suspended Solids (TSS) | 61 |
61 |
| Phosphorus, Total | 59 |
59 |
| Phosphorus | 58 |
67 |
| Nitrite/Nitrate | 22 |
22 |
| Pathogens | 22 |
22 |
| Nitrogen, Total | 20 |
20 |
| Ammonia | 1 |
1 |
| Carbonaceous Bod | 1 |
1 |
| Dissolved Oxygen | 1 |
2 |
Total: 1,045 TMDLs; 1,055 Causes of Impairment Addressed
Indiana 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 |
|---|---|---|
| 2000 | 1 |
2 |
| 2001 | 2 |
2 |
| 2004 | 38 |
38 |
| 2005 | 165 |
165 |
| 2006 | 247 |
256 |
| 2007 | 95 |
95 |
| 2008 | 117 |
117 |
| 2009 | 103 |
103 |
| 2010 | 85 |
85 |
| 2011 | 106 |
106 |
| 2012 | 86 |
86 |
Total: 1,045 TMDLs; 1,055 Causes of Impairment Addressed