Projects of the TMDL Program
The Total Maximum Daily Load Program is communities working together on projects to improve water quality in the streams, lakes, and bays of Texas by reducing pollution.
The TMDL Program works with communities around the state to restore Texas waterways that have limited quality in relation to one or more of their assigned uses, such as recreation, fishing, or a healthy aquatic environment. The latest Index of All Water Quality Impairments, part of the Texas Integrated Report of Surface Water Quality, shows all impaired waterways and the strategies that are planned or under way to improve their quality.
In addition to working with stakeholders to develop and implement TMDLs, the program manages studies that determine the best management strategies for specific waterways.
Learn more about TMDLs and How They Are Implemented.
Read about what it means to participate in TMDL projects.
TMDLs and I-Plans
- TMDLs or I-Plans in Development are listed in alphabetical order by waterway or region name. This includes projects for which TMDLs have been adopted but I-Plans are still in development.
- Completed projects and assessments are listed here in alphabetical order by waterway or region name.
TMDL Summary Table: Download this spreadsheet for a list of all TMDL assessment units, approval/adoption dates and project webpages. (last updated Feb. 13, 2025).
Contact the TMDL Program
Please email tmdl@tceq.texas.gov or call 512-239-6682. Sign up to get News Updates from the TMDL Program to be notified when TMDLs or I-Plans are in public comment, along with notices of adoptions and approvals and other water quality news.
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