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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
2006
2008
2010
Waterbody Changes from Prior Cycle
For More Information:
Utah Impaired Waters and TMDL Information
Assessed Waters of Utah by Watershed
Search for a waterbody within Utah
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Utah 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 |
|---|---|---|
| 2003 |  1 |
2 |
| 2012 | 20 |
42 |
Utah 1998 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 |  117 |
| pH/Acidity/Caustic Conditions | 73 |
| Salinity/Total Dissolved Solids/Chlorides/Sulfates | 59 |
| Nutrients | 52 |
| Turbidity | 49 |
| Temperature | 30 |
| Pathogens | 30 |
| Oil and Grease | 28 |
| Metals (other than Mercury) | 28 |
| Sediment | 27 |
| Toxic Organics | 19 |
| Chlorine | 18 |
| Ammonia | 13 |
| Habitat Alterations | 12 |
| Flow Alteration(s) | 12 |
| Total Toxics | 5 |
| Toxic Inorganics | 5 |
| Radiation | 2 |
| Pesticides | 2 |
| Other Cause | 2 |
| Mercury | 1 |
| Noxious Aquatic Plants | 1 |
Total: 585 Causes of Impairment
Utah 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 |
|---|---|---|
| Dissolved Oxygen |  43 |
46 |
| Phosphorus | 42 |
59 |
| Ammonia | 37 |
37 |
| Total Dissolved Solids (TDS) | 36 |
36 |
| Phosphorus, Total | 20 |
20 |
| Ammonia, Un-ionized | 17 |
17 |
| Total Residual Chlorine | 16 |
16 |
| Chlorine | 13 |
14 |
| Sediment | 10 |
10 |
| Biochemical Oxygen Demand (BOD) | 9 |
9 |
| Chlorine, Residual (Chlorine Demand) | 9 |
9 |
| Copper | 6 |
8 |
| Iron | 6 |
6 |
| Habitat | 5 |
5 |
| Temperature | 5 |
5 |
| Zinc | 5 |
7 |
| Lead | 4 |
6 |
| Selenium | 4 |
4 |
| Escherichia Coli (E. Coli) | 3 |
3 |
| Silver | 3 |
3 |
| Gross Alpha | 2 |
2 |
| Mercury | 2 |
4 |
| Total Suspended Solids (TSS) | 2 |
2 |
| Aluminum | 1 |
1 |
| Boron | 1 |
1 |
| Cadmium | 1 |
1 |
| Chromium, Hexavalent | 1 |
1 |
| Cyanide | 1 |
1 |
| Fecal Coliform | 1 |
1 |
| Salinity/Total Dissolved Solids/Chlorides | 1 |
1 |
| Thermal Modifications | 1 |
1 |
| Total Coliform | 1 |
1 |
Total: 308 TMDLs; 337 Causes of Impairment Addressed
Utah 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 | 15 |
24 |
| 1998 | 22 |
23 |
| 1999 | 16 |
16 |
| 2000 | 28 |
35 |
| 2001 | 12 |
13 |
| 2002 | 35 |
35 |
| 2003 | 8 |
8 |
| 2004 | 44 |
44 |
| 2005 | 68 |
68 |
| 2006 | 11 |
11 |
| 2007 | 38 |
41 |
| 2008 | 4 |
5 |
| 2010 | 6 |
13 |
| 2012 | 1 |
1 |
Total: 308 TMDLs; 337 Causes of Impairment Addressed