Texas Integrated Report of Surface Water Quality for Clean Water Act Sections 305(b) and 303(d)

The Texas Integrated Report evaluates the quality of surface waters in the state and provides resource managers with a tool for making informed decisions when directing agency programs.

The Texas Integrated Report describes the status of Texas’ natural waters based on historical data and the extent to which they attain the Texas Surface Water Quality Standards.

The Texas Integrated Report satisfies the requirements of the federal Clean Water Act Sections 305(b) and 303(d). The TCEQ produces a new report every two years in even-numbered years, as required by law. The 303(d) List must be approved by the EPA before it is final.

An advisory group works with the TCEQ on biennial reviews of the Guidance for Assessing Texas Surface Water Quality. This guidance is included with each Integrated Report.

If you would like to receive notifications concerning the Texas Integrated Report, including notifications about opportunities to provide public comment or notifications about advisory group meetings, then please subscribe to our TCEQ GovDelivery topic “Assessment: Surface Water Quality Assessment Advisory Work Group.” You can find this topic on the TCEQ GovDelivery quick subscribe page under the Water Quality topic group.

2024 Texas Integrated Report

Full 2024 Texas Integrated Report
The state's 2024 assessment of surface water quality was completed in June 2024. Waterways are assigned to various categories (1 through 5) depending on their attainment of the standards established to define and measure their quality.

2024 Texas 303(d) List
Category 5 of the Integrated Report comprises the 303(d) List. The 303(d) list identifies those impaired waters for which the state plans to develop total maximum daily loads (TMDLs).

The 2024 Texas 303(d) List was approved for submission by the TCEQ on June 26, 2024. The Environmental Protection Agency approved the 2024 Texas 303(d) List on November 13, 2024.

2024 Index of All Impaired Waters
Categories 4 and 5 together comprise the list of all impaired waters.

Category 4 includes impaired waters for which TMDLs have already been adopted or for which other management strategies are underway to improve water quality.
Category 5 includes impaired waters for which TMDLs or other management strategies are planned.

Inventories and 303(d) Lists from Prior Years

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For More Information

Please send an e-mail to 303d@tceq.texas.gov.

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