Texas Water Quality Assessment Report

Texas Assessment Summary
Water Quality by Waterbody Type
Causes of Impairment
Probable Sources Contributing to Impairments
TMDL Alternatives by Cause of Impairment
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

303(d) Listed Waters for 2010

Data are also available for these cycles:
2002 2004 2006 2008

For More Information:

Texas Assessment Report
State Water Quality Program
Texas Assessment Report
State Water Quality Program
Texas Assessment Report
State Water Quality Program
Texas Assessment Report
State Water Quality Program

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Assessed Waters of Texas by Watershed

Select a watershed from the list:
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Features

Site-specific Targeted Monitoring Summary Results

Texas (2010)

Description of this table

	Rivers and Streams (Miles)	Lakes, Reservoirs, and Ponds (Acres)	Bays and Estuaries (Square Miles)	Coastal Shoreline (Miles)	Ocean and Near Coastal (Square Miles)
	Size of Water
Good Waters	13,225.7	900,088.0	4,320.9		6.6
Previously impaired waters now attaining all uses	1,811.7	57,588.0
Threatened Waters
TMDL completed
TMDL alternative
Non-pollutant impairment
TMDL needed
Impaired Waters	10,320.7	561,908.7	1,690.0	388.2	68.3
TMDL completed	690.2	24,535.0	210.1
TMDL alternative	59.6
Non-pollutant impairment	18.7	232.8	.1
TMDL needed	9,552.2	537,140.9	1,479.8	388.2	68.3
New TMDLs completed	432.4	.0	.0	.0	.0
Remaining TMDLs needed	9,119.8	537,140.9	1,479.8	388.2	68.3

Total Assessed Waters	23,546.4	1,461,996.6	6,010.8	388.2	74.9
Total Waters	191,228.0	1,994,600.0	2,393.0	Unavailable	Unavailable
Percent of Waters Assessed	12.3	73.3	251.2	Unavailable	Unavailable

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Summary of Water Quality Assessments for Each Waterbody Type
for Reporting Year 2010

Site-specific Targeted Monitoring Results

Texas Rivers and Streams 2010

Description of this table

Assessed Status	Miles

Assessed	23,546.4
Unassessed	167,681.6
Total Miles	191,228.0

Description of this table

Attainment Status	Miles

Good	13,225.7
Threatened	.0
Impaired	10,320.7
Total Miles Assessed	23,546.4

Description of this table

TMDL Development Status	Miles

All TMDLs completed	1,122.7
TMDL alternative	59.6
Non-pollutant impairment	18.7
TMDL needed	9,119.8
Total Threatened and Impaired	10,320.7

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
Texas Rivers and Streams 2010

* Waters assessed for more than one designated use are included in multiple designated use groups below.

Description of this table

Designated Use	Miles Assessed	Percent Good	Percent Threatened	Percent Impaired	% Good
					% Threatened
					% Impaired
Aquatic Life Use	19,410.7	88.8	.0	11.2
Domestic Water Supply - Public Water Supply	6,655.7	100.0	.0	.0
Fish Consumption Use	4,014.2	76.0	.0	24.0
General Use	15,132.9	88.4	.0	11.6
Primary Recreation/Swimming	16,734.6	57.8	.0	42.2

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Site-specific Targeted Monitoring Results

Causes of Impairment
Texas Rivers and Streams 2010

Description of this table

Cause of Impairment	Cause of Impairment Group	Miles Threatened or Impaired
Bacteria	Pathogens	7,107.7
Dissolved Oxygen	Organic Enrichment/Oxygen Depletion	1,954.2
Chloride	Salinity/Total Dissolved Solids/Chlorides/Sulfates	1,325.2
Total Dissolved Solids (TDS)	Salinity/Total Dissolved Solids/Chlorides/Sulfates	989.9
PCB(s) in Fish Tissue	Polychlorinated Biphenyls (PCBs)	640.8
Dioxin (Including 2,3,7,8-TCDD)	Dioxins	521.0
Sulfates	Salinity/Total Dissolved Solids/Chlorides/Sulfates	489.3
Mercury in Fish Tissue	Mercury	387.2
Impaired Fish Community	Cause Unknown - Impaired Biota	211.6
Impaired Macrobenthos Community	Cause Unknown - Impaired Biota	206.6
pH	pH/Acidity/Caustic Conditions	176.3
Excess Algal Growth	Algal Growth	92.5
Heptachlor Epoxide	Pesticides	72.6
Chlordane in Fish Tissue	Pesticides	72.6
Dieldrin	Pesticides	72.6
DDE	Pesticides	68.5
Selenium	Metals (other than Mercury)	32.6
Nitrates	Nutrients	27.9
Zinc	Metals (other than Mercury)	26.0
Toxicity	Total Toxics	17.3
Aluminum	Metals (other than Mercury)	6.8
Sediment Toxicity	Total Toxics	5.9
Chlorine Dioxide (As ClO2)	Chlorine	5.0
Mercury in Water Column	Mercury	2.5
Copper	Metals (other than Mercury)	1.4

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Site-specific Targeted Monitoring Results

Probable Sources
Texas Rivers and Streams 2010

Description of this table

Probable Source	Probable Source Group	Miles Threatened or Impaired
Non-Point Source	Unspecified Nonpoint Source	5,960.9
Source Unknown	Unknown	5,473.9
Municipal Point Source Discharges	Municipal Discharges/Sewage	2,161.5
Natural Sources	Natural/Wildlife	1,664.7
Urban Runoff/Storm Sewers	Urban-Related Runoff/Stormwater	1,200.9
Sources Outside State Jurisdiction Or Borders	Other	872.6
Agriculture	Agriculture	855.1
Permitted Runoff From Confined Animal Feeding Operations (Cafos)	Agriculture	739.1
On-Site Treatment Systems (Septic Systems And Similar Decentralized Systems)	Municipal Discharges/Sewage	694.6
Upstream Source	Other	639.3
Natural Conditions - Water Quality Standards Use Attainability Analyses Needed	Natural/Wildlife	568.6
Sanitary Sewer Overflows (Collection System Failures)	Municipal Discharges/Sewage	555.1
Wildlife Other Than Waterfowl	Natural/Wildlife	483.7
Irrigated Crop Production	Agriculture	470.0
Rangeland Grazing	Agriculture	443.9
Flow Alterations From Water Diversions	Hydromodification	392.5
Unrestricted Cattle Access	Agriculture	386.1
Industrial Point Source Discharge	Industrial	383.2
Grazing In Riparian Or Shoreline Zones	Agriculture	370.8
Municipal (Urbanized High Density Area)	Urban-Related Runoff/Stormwater	367.5
Atmospheric Deposition - Toxics	Atmospheric Deposition	318.7
Livestock (Grazing Or Feeding Operations)	Agriculture	225.3
Rural (Residential Areas)	Other	196.8
Animal Feeding Operations (Nps)	Agriculture	182.5
Petroleum/Natural Gas Activities	Resource Extraction	143.7
Internal Nutrient Recycling	Natural/Wildlife	129.3
Channelization	Hydromodification	105.8
Impacts From Hydrostructure Flow Regulation/Modification	Hydromodification	102.8
Manure Runoff	Agriculture	86.3
Wet Weather Discharges (Non-Point Source)	Urban-Related Runoff/Stormwater	83.0
Residential Districts	Urban-Related Runoff/Stormwater	82.0
Sand/Gravel/Rock Mining Or Quarries	Resource Extraction	74.9
Crop Production (Crop Land Or Dry Land)	Agriculture	72.3
Unpermitted Discharge (Industrial/Commercial Wastes)	Spills/Dumping	68.5
Non-Irrigated Crop Production	Agriculture	65.4
Aquaculture (Permitted)	Aquaculture	49.0
Petroleum/Natural Gas Production Activities (Permitted)	Industrial	47.4
Dam Or Impoundment	Hydromodification	46.6
Highways, Roads, Bridges, Infrastructure (New Construction)	Construction	30.2
Municipal Point Source Impacts From Inadequate Industrial/Commercial Pretreatment	Municipal Discharges/Sewage	28.2
Non-Metals Mining Discharges (Permitted)	Resource Extraction	28.2
Wet Weather Discharges (Point Source And Combination Of Stormwater, Sso Or Cso)	Municipal Discharges/Sewage	27.9
Drought-Related Impacts	Natural/Wildlife	27.3
Discharges From Municipal Separate Storm Sewer Systems (Ms4)	Urban-Related Runoff/Stormwater	23.9
Septage Disposal	Municipal Discharges/Sewage	19.0
Land Application Of Wastewater Biosolids (Non-Agricultural)	Land Application/Waste Sites/Tanks	18.6
Industrial Thermal Discharges	Industrial	18.4
Sediment Resuspension (Clean Sediment)	Hydromodification	14.9
Waterfowl	Natural/Wildlife	13.8
Impacts From Land Application Of Wastes	Land Application/Waste Sites/Tanks	13.4
Land Application Of Wastewater (Non-Agricultural)	Land Application/Waste Sites/Tanks	13.4
Impacts From Resort Areas (Winter And Non-Winter Resorts)	Recreation And Tourism (Non-Boating)	12.7
Unspecified Urban Stormwater	Urban-Related Runoff/Stormwater	10.7
Aquaculture (Not Permitted)	Aquaculture	10.6
Loss Of Riparian Habitat	Habitat Alterations (Not Directly Related To Hydromodification)	9.0
Discharges From Biosolids (Sludge) Storage, Application Or Disposal	Land Application/Waste Sites/Tanks	7.8
Streambank Modifications/Destabilization	Hydromodification	7.3
Auction Barns And Off-Farm Animal Holding/Management Area	Agriculture	7.3
Impacts From Abandoned Mine Lands (Inactive)	Resource Extraction	6.8
Habitat Modification - Other Than Hydromodification	Habitat Alterations (Not Directly Related To Hydromodification)	1.7
Littoral/Shore Area Modifications (Non-Riverine)	Habitat Alterations (Not Directly Related To Hydromodification)	1.5
Unspecified Land Disturbance	Other	1.1

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Site-specific Targeted Monitoring Results

Texas Lakes, Reservoirs, and Ponds 2010

Description of this table

Assessed Status	Acres

Assessed	1,461,996.6
Unassessed	532,603.4
Total Acres	1,994,600.0

Description of this table

Attainment Status	Acres

Good	900,088.0
Threatened	.0
Impaired	561,908.7
Total Acres Assessed	1,461,996.6

Description of this table

TMDL Development Status	Acres

All TMDLs completed	24,535.0
TMDL alternative	.0
Non-pollutant impairment	232.8
TMDL needed	537,140.9
Total Threatened and Impaired	561,908.7

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
Texas Lakes, Reservoirs, and Ponds 2010

* Waters assessed for more than one designated use are included in multiple designated use groups below.

Description of this table

Designated Use	Acres Assessed	Percent Good	Percent Threatened	Percent Impaired	% Good
					% Threatened
					% Impaired
Aquatic Life Use	1,122,430.2	97.6	.0	2.4
Domestic Water Supply - Public Water Supply	926,284.2	100.0	.0	.0
Fish Consumption Use	576,283.9	39.7	.0	60.3
General Use	1,423,605.5	84.7	.0	15.3
Primary Recreation/Swimming	930,414.6	99.5	.0	.5

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Site-specific Targeted Monitoring Results

Causes of Impairment
Texas Lakes, Reservoirs, and Ponds 2010

Description of this table

Cause of Impairment	Cause of Impairment Group	Acres Threatened or Impaired
Mercury in Fish Tissue	Mercury	339,710.0
Sulfates	Salinity/Total Dissolved Solids/Chlorides/Sulfates	116,257.4
pH	pH/Acidity/Caustic Conditions	91,801.0
Total Dissolved Solids (TDS)	Salinity/Total Dissolved Solids/Chlorides/Sulfates	60,190.5
Dissolved Oxygen	Organic Enrichment/Oxygen Depletion	25,998.0
Chloride	Salinity/Total Dissolved Solids/Chlorides/Sulfates	24,680.9
PCB(s) in Fish Tissue	Polychlorinated Biphenyls (PCBs)	7,975.4
Bacteria	Pathogens	4,647.3
Impaired Fish Community	Cause Unknown - Impaired Biota	3,731.7
DDT in Fish Tissue	Pesticides	2,433.7
Chlordane in Fish Tissue	Pesticides	2,433.7
DDD	Pesticides	2,433.7
Dieldrin	Pesticides	2,433.7
DDE	Pesticides	2,433.7
Heptachlor Epoxide	Pesticides	2,433.7
Sediment Toxicity	Total Toxics	1,408.7
Copper	Metals (other than Mercury)	1,370.6

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Site-specific Targeted Monitoring Results

Probable Sources
Texas Lakes, Reservoirs, and Ponds 2010

Description of this table

Probable Source	Probable Source Group	Acres Threatened or Impaired
Source Unknown	Unknown	510,566.7
Atmospheric Deposition - Toxics	Atmospheric Deposition	338,869.3
Non-Point Source	Unspecified Nonpoint Source	98,377.7
Natural Sources	Natural/Wildlife	74,907.3
Internal Nutrient Recycling	Natural/Wildlife	37,986.7
Municipal Point Source Discharges	Municipal Discharges/Sewage	37,337.6
Drought-Related Impacts	Natural/Wildlife	30,108.8
Upstream Source	Other	19,550.7
Sources Outside State Jurisdiction Or Borders	Other	16,238.3
Crop Production (Crop Land Or Dry Land)	Agriculture	14,764.9
Natural Conditions - Water Quality Standards Use Attainability Analyses Needed	Natural/Wildlife	12,845.4
Agriculture	Agriculture	11,452.5
Shallow Lake/Reservoir	Other	7,115.3
Petroleum/Natural Gas Activities	Resource Extraction	7,115.3
Industrial Point Source Discharge	Industrial	3,510.4
Non-Irrigated Crop Production	Agriculture	3,312.4
Residential Districts	Urban-Related Runoff/Stormwater	3,312.4
Specialty Crop Production	Agriculture	3,312.4
Nps Pollution From Military Base Facilities (Other Than Port Facilities)	Military Bases	2,433.7
Site Clearance (Land Development Or Redevelopment)	Construction	2,433.7
Irrigated Crop Production	Agriculture	2,101.7
Contaminated Sediments	Legacy/Historical Pollutants	1,385.3
Urban Runoff/Storm Sewers	Urban-Related Runoff/Stormwater	824.1
Sanitary Sewer Overflows (Collection System Failures)	Municipal Discharges/Sewage	800.7
On-Site Treatment Systems (Septic Systems And Similar Decentralized Systems)	Municipal Discharges/Sewage	800.7
Waterfowl	Natural/Wildlife	288.6
Atmospheric Deposition - Acidity	Atmospheric Deposition	262.1
Dam Or Impoundment	Hydromodification	232.8
Industrial Land Treatment	Industrial	38.2
Discharges From Municipal Separate Storm Sewer Systems (Ms4)	Urban-Related Runoff/Stormwater	23.5
Industrial/Commercial Site Stormwater Discharge (Permitted)	Urban-Related Runoff/Stormwater	14.7

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Site-specific Targeted Monitoring Results

Texas Bays and Estuaries 2010

Description of this table

Assessed Status	Square Miles

Assessed	6,010.8
Unassessed	-3,617.8
Total Square Miles	2,393.0

Description of this table

Attainment Status	Square Miles

Good	4,320.9
Threatened	.0
Impaired	1,690.0
Total Square Miles Assessed	6,010.8

Description of this table

TMDL Development Status	Square Miles

All TMDLs completed	210.1
TMDL alternative	.0
Non-pollutant impairment	.1
TMDL needed	1,479.8
Total Threatened and Impaired	1,690.0

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
Texas Bays and Estuaries 2010

* Waters assessed for more than one designated use are included in multiple designated use groups below.

Description of this table

Designated Use	Square Miles Assessed	Percent Good	Percent Threatened	Percent Impaired	% Good
					% Threatened
					% Impaired
Aquatic Life Use	4,101.1	85.0	.0	15.0
Fish Consumption Use	1,201.1	54.9	.0	45.1
General Use	4,141.1	100.0	.0	.0
Oyster Aquatic Life	1,863.4	72.0	.0	28.0
Primary Recreation/Swimming	4,135.1	97.5	.0	2.5
Recreational Beaches	1.3	94.5	.0	5.5

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Site-specific Targeted Monitoring Results

Causes of Impairment
Texas Bays and Estuaries 2010

Description of this table

Cause of Impairment	Cause of Impairment Group	Square Miles Threatened or Impaired
Dissolved Oxygen	Organic Enrichment/Oxygen Depletion	614.4
PCB(s) in Fish Tissue	Polychlorinated Biphenyls (PCBs)	540.5
Dioxin (Including 2,3,7,8-TCDD)	Dioxins	540.5
Bacteria (Oyster Waters)	Pathogens	491.2
Bacteria	Pathogens	105.0
Zinc in Edible Tissue	Metals (other than Mercury)	30.5
Mercury in Fish Tissue	Mercury	1.6

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Site-specific Targeted Monitoring Results

Probable Sources
Texas Bays and Estuaries 2010

Description of this table

Probable Source	Probable Source Group	Square Miles Threatened or Impaired
Source Unknown	Unknown	1,110.5
Non-Point Source	Unspecified Nonpoint Source	1,006.9
Upstream Source	Other	611.9
Industrial Point Source Discharge	Industrial	542.2
Urban Runoff/Storm Sewers	Urban-Related Runoff/Stormwater	361.2
Municipal Point Source Discharges	Municipal Discharges/Sewage	43.7
Irrigated Crop Production	Agriculture	27.6
Wildlife Other Than Waterfowl	Natural/Wildlife	7.0
Natural Sources	Natural/Wildlife	6.6

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Site-specific Targeted Monitoring Results

Texas Coastal Shoreline 2010

Description of this table

Assessed Status	Miles
Pie chart not displayed because total size for Coastal Shoreline is unavailable.
Assessed	388.2
Unassessed	Unavailable
Total Miles	Unavailable

Description of this table

Attainment Status	Miles

Good	.0
Threatened	.0
Impaired	388.2
Total Miles Assessed	388.2

Description of this table

TMDL Development Status	Miles

All TMDLs completed	.0
TMDL alternative	.0
Non-pollutant impairment	.0
TMDL needed	388.2
Total Threatened and Impaired	388.2

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
Texas Coastal Shoreline 2010

* Waters assessed for more than one designated use are included in multiple designated use groups below.

Description of this table

Designated Use	Miles Assessed	Percent Good	Percent Threatened	Percent Impaired	% Good
					% Threatened
					% Impaired
Aquatic Life Use	150.5	100.0	.0	.0
Fish Consumption Use	388.2	.0	.0	100.0
General Use	150.5	100.0	.0	.0
Primary Recreation/Swimming	150.5	82.0	.0	18.0

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Site-specific Targeted Monitoring Results

Causes of Impairment
Texas Coastal Shoreline 2010

Description of this table

Cause of Impairment	Cause of Impairment Group	Miles Threatened or Impaired
Mercury in Fish Tissue	Mercury	388.2
Bacteria	Pathogens	27.0

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Site-specific Targeted Monitoring Results

Probable Sources
Texas Coastal Shoreline 2010

Description of this table

Probable Source	Probable Source Group	Miles Threatened or Impaired
Source Unknown	Unknown	388.2
Atmospheric Deposition - Toxics	Atmospheric Deposition	388.2

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Site-specific Targeted Monitoring Results

Texas Ocean and Near Coastal 2010

Description of this table

Assessed Status	Square Miles
Pie chart not displayed because total size for Ocean and Near Coastal is unavailable.
Assessed	74.9
Unassessed	Unavailable
Total Square Miles	Unavailable

Description of this table

Attainment Status	Square Miles

Good	6.6
Threatened	.0
Impaired	68.3
Total Square Miles Assessed	74.9

Description of this table

TMDL Development Status	Square Miles

All TMDLs completed	.0
TMDL alternative	.0
Non-pollutant impairment	.0
TMDL needed	68.3
Total Threatened and Impaired	68.3

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
Texas Ocean and Near Coastal 2010

* Waters assessed for more than one designated use are included in multiple designated use groups below.

Description of this table

Designated Use	Square Miles Assessed	Percent Good	Percent Threatened	Percent Impaired	% Good
					% Threatened
					% Impaired
Fish Consumption Use	68.3	.0	.0	100.0
Recreational Beaches	6.6	100.0	.0	.0

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Site-specific Targeted Monitoring Results

Causes of Impairment
Texas Ocean and Near Coastal 2010

Description of this table

Cause of Impairment	Cause of Impairment Group	Square Miles Threatened or Impaired
Mercury in Fish Tissue	Mercury	68.3

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Site-specific Targeted Monitoring Results

Probable Sources
Texas Ocean and Near Coastal 2010

Description of this table

Probable Source	Probable Source Group	Square Miles Threatened or Impaired
Source Unknown	Unknown	68.3
Atmospheric Deposition - Toxics	Atmospheric Deposition	68.3

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Texas Causes of Impairment for Reporting Year 2010

Description of this table

Cause of Impairment Group	Size of Assessed Waters with Listed Causes of Impairment
NOTE: Click on the underlined Cause of Impairment Group to see a list of specific state causes of impairment making up the Cause of Impairment Group. See also Pollution categories summary document (PDF) (20 pp, 557K, About PDF) for brief, non-technical descriptions of general cause categories.
Cause of Impairment Group	Rivers and Streams (Miles)	Lakes, Reservoirs, and Ponds (Acres)	Bays and Estuaries (Square Miles)	Coastal Shoreline (Miles)	Ocean and Near Coastal (Square Miles)
Algal Growth	92.5
Cause Unknown - Impaired Biota	243.9	3,731.7
Chlorine	5.0
Dioxins	521.0		540.5
Mercury	389.7	339,710.0	1.6	388.2	68.3
Metals (other than Mercury)	66.8	1,370.6	30.5
Nutrients	27.9
Organic Enrichment/Oxygen Depletion	1,954.2	25,998.0	614.4
Pathogens	7,107.7	4,647.3	596.2	27.0
Pesticides	141.1	2,433.7
pH/Acidity/Caustic Conditions	176.3	91,801.0
Polychlorinated Biphenyls (PCBs)	640.8	7,975.4	540.5
Salinity/Total Dissolved Solids/Chlorides/Sulfates	1,416.2	143,053.8
Total Toxics	23.3	1,408.7

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Texas Probable Sources Contributing to Impairments
for Reporting Year 2010

Description of this table

Probable Source Group	Size of Assessed Waters with Probable Sources of Impairments
NOTE: Click on the underlined Probable Source Group to see a list of specific state Probable Sources making up the Probable Source Group.
Probable Source Group	Rivers and Streams (Miles)	Lakes, Reservoirs, and Ponds (Acres)	Bays and Estuaries (Square Miles)	Coastal Shoreline (Miles)	Ocean and Near Coastal (Square Miles)
Agriculture	2,456.5	16,866.6	27.6
Aquaculture	49.0
Atmospheric Deposition	318.7	338,869.3		388.2	68.3
Construction	30.2	2,433.7
Habitat Alterations (Not Directly Related To Hydromodification)	10.4
Hydromodification	452.1	232.8
Industrial	441.3	3,510.4	542.2
Land Application/Waste Sites/Tanks	18.6
Legacy/Historical Pollutants		1,385.3
Military Bases		2,433.7
Municipal Discharges/Sewage	2,730.2	38,138.3	43.7
Natural/Wildlife	2,414.2	127,609.6	13.7
Other	1,569.5	26,666.0	611.9
Recreation And Tourism (Non-Boating)	12.7
Resource Extraction	253.5	7,115.3
Spills/Dumping	68.5
Unknown	5,473.9	510,566.7	1,110.5	388.2	68.3
Unspecified Nonpoint Source	5,960.9	98,377.7	1,006.9
Urban-Related Runoff/Stormwater	1,543.0	4,174.7	361.2

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Texas TMDL Alternatives by Cause of Impairment 2010

Description of this table

Cause of Impairment	Number of TMDL Alternatives	Rivers and Streams (Miles)	Bays and Estuaries (Square Miles)
NOTE: Click on the underlined "Number of TMDL Alternatives by Cause of Impairment " value to see a listing of those Causes of Impairment.
Chlordane in Fish Tissue	15	73
Dieldrin	15	73
Heptachlor Epoxide	15	73
Bacteria	3	55
Dissolved Oxygen	1	5
Mercury in Fish Tissue	1		2

Total: 50 TMDL Alternatives

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Texas Previously 303(d)-Listed Waters Now Attaining All Applicable Water Quality Standards

Description of this table

Year Attaining	Number of Waters Attaining	Number of Causes of Impairment Addressed
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.
2005	7	7
2008	22	26
2012	42	50

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Texas Causes of Impairment for 303(d) Listed Waters

Description of this table

Cause of Impairment Group Name	Number of Causes of Impairment Reported
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.
Pathogens	418
Organic Enrichment/Oxygen Depletion	130
Polychlorinated Biphenyls (PCBs)	104
Salinity/Total Dissolved Solids/Chlorides/Sulfates	102
Dioxins	90
Mercury	75
pH/Acidity/Caustic Conditions	41
Cause Unknown - Impaired Biota	24
Total Toxics	11
Metals (other than Mercury)	6
Chlorine	1
Pesticides	1

Total: 1,003 Causes of Impairment

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Texas Cumulative TMDLs by Pollutant

This chart includes TMDLs since October 1, 1995.

Description of this table

Pollutant	Number of TMDLs	Number of Causes of Impairment Addressed
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.
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

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Texas Cumulative Number of TMDLs

EPA Fiscal Year starts October 1 and ends September 30.

Description of this table

Fiscal Year	Number of TMDLs	Number of Causes of Impairment Addressed
NOTE: Click on the underlined "Number of TMDLs Completed" value for a detailed list of the TMDLs for the fiscal year.
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

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TMDL Document Search

Full Text Search of TMDL Documents

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