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Impaired Water Bodies in Louisiana



The listing of water bodies which fail to meet water quality standards is required by section 303(d) of the Clean Water Act. Water bodies included on this list receive additional attention and resources to reduce pollution, protect public health, and provide for healthy aquatic life. EPA regularly works with states and local governments to reduce pollution, protect public health and provide for healthy aquatic life in our nation’s waters.

Final Action on the State of Louisiana’s 2012 Clean Water Act §303(d) List

EPA is issuing a complete list of Louisiana’s impaired water bodies for 2012 by adding three Gulf of Mexico near-shore coastal segments. This decision is consistent with the agency’s actions on the state’s 2008 and 2010 lists. These near-shore segments, located west of the Mississippi River mouth, failed to meet the state’s water quality standard for dissolved oxygen, which is necessary to support fisheries and other aquatic life.  Concentrations of low dissolved oxygen in water bodies are referred to as hypoxia.

EPA letter to the Louisiana Department of Environmental Quality (1 p, 53 KB, About PDF)
Federal Register Notice - Clean Water Act Section 303(d): Availability of List Decisions (4 pp, 84 KB About PDF)
Record of Decision (16 pp, 98 KB About PDF)
Responsiveness Summary (9 pp, 76 KB About PDF)

Final Action on the State of Louisiana’s 2010 Clean Water Act §303(d) List

EPA letter to the Louisiana Department of Environmental Quality (1 pp, 285 KB, About PDF)
Federal Register Notice - Clean Water Act Section 303(d): Availability of List Decisions Responsiveness Summary (19 pp, 135 KB, About PDF)

Final Action on the State of Louisiana’s 2008 Clean Water Act §303(d) List

EPA letter to the Louisiana Department of Environmental Quality (1 pp, 277 KB, About PDF)
Federal Register Notice - Clean Water Act Section 303(d): Availability of List Decisions Responsiveness Summary (12 pp, 534 KB, About PDF)

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