Total Maximum Daily Load Section

Mississippi's TMDL program, a branch of the Surface Water Division, is responsible for developing TMDLs. A TMDL reports the acceptable amount of a specific pollutant a stream can handle without a violation of water quality standards. The identification of water bodies not meeting their designated use and the development of total maximum daily loads (TMDLs) for those water bodies are required by Section 303(d) of the Clean Water Act.


Total Maximum Daily Load Program

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What You Will Find on This Link

About TMDLs
TMDLs at Public Notice

Approved TMDLs
303(d)List of Impaired Water Bodies


Section 303(d) of the Clean Water Act requires the state to identify water bodies that do not meet one or more applicable water quality standards and for which TMDLs are needed. Mississippi’s Section 303(d) List of Impaired Water Bodies identifies impaired water bodies and establishes a priority ranking for such waters, taking into account the severity of the pollution and the uses to be made of the water bodies. The Section 303(d) listing requirement applies to water bodies impaired by point and nonpoint sources.

The 2012 Section 303(d) List of Impaired Water Bodies was adopted on June 28, 2012 by the Mississippi Commission of Environmental Quality.

The 2014 Section 303(d) List of Impaired Water Bodies is available for public review and comment. Persons wishing to comment upon the draft list are invited to submit comments in writing to Mr. Greg Jackson at the address shown below or email (gjackson@mdeq.ms.gov) no later than 5 o’clock p.m. on April 10, 2014. A public hearing will be held to receive comments from the public on this draft list on April 10, 2014 at 5:00 p.m. in the MDEQ Commission Hearing Room at 515 Amite Street, Jackson, MS. All comments received during the public notice period and at the public hearing will be considered prior to proposing the list to the Mississippi Commission on Environmental Quality and the Environmental Protection Agency for approval.

The 2014 303(d) List of Impaired Water Bodies was developed, along with the 2014 305(b) Water Quality Assessment, using the Mississippi Consolidated Assessment and Listing Methodology (CALM) 2014 Assessment and Listing Cycle.

Gregory Jackson
Mississippi Department of Environmental Quality
P.O. Box 2261
Jackson, MS 39225