Total Maximum Daily Load Program

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.

The Clean Water Act Mississippi 2018 Section 303(d) List of Impaired Water Bodies
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.

Contact Information

Shawn Clark

Modeling and TMDL Branch Manager

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