Texas Integrated Report of Surface Water Quality

Formerly called the "Texas Water Quality Inventory and 303(d) List," the Texas Integrated Report of Surface Water Quality evaluates the quality of surface waters in Texas, and provides resource managers with a tool for making informed decisions when directing agency programs. The Texas Integrated Report is a requirement of the federal Clean Water Act Sections 305(b) and 303(d).

The Texas Integrated Report describes the status of Texas’ natural waters based on historical data. It assigns waterways to various categories depending on the extent to which they attain the Texas Surface Water Quality Standards, which were developed to define water quality and the criteria for which that quality is measured..

The Texas Integrated Report satisfies the requirements of 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.

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2014 Texas Integrated Report of Surface Water Quality

2012 Texas Integrated Report of Surface Water Quality

2012 Texas Integrated Report
The state's 2012 assessment of surface water quality. Waterways are assigned to various categories (1 through 5) depending on their attainment of the standards established to define and measure their quality.

2012 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 2012 Texas 303(d) List was approved for submission by the TCEQ on February 13, 2013. It was submitted to the Environmental Protection Agency on February 21, 2013 and approved May 9, 2013.

2012 Index of All Impaired Waters Adobe Acrobat PDF Document
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.