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You are here: Home / Water Quality / Total Maximum Daily Load Program / Upper San Antonio River: Planning to Protect Recreational Uses

Upper San Antonio River: Planning to Protect Recreational Uses

A community project to reduce bacteria levels and protect recreational safety in the river. Stakeholders are working together to develop an I-Plan, which together with the adopted TMDLs is the road map to improving water quality.
photo of the San Antonio River, Texas

San Antonio River

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Watershed Counties: Bexar, Karnes, Wilson
Parameter: Bacteria
Basin: San Antonio River
Segments: 1910, 1910A, 1911

Background and Goals

The goal of this current project is to reduce bacteria levels in parts of the San Jacinto River, making them safer for recreation. High levels of bacteria may pose a risk to people who swim or wade in them—activities called “contact recreation” in the state's standards for water quality.

The stream segments included in the project are Salado Creek (Segment 1910), Walzem Creek (Segment 1910A), and the Upper San Antonio River (Segment 1911). Texas AgriLife Research Exit the TCEQ and the San Antonio River Authority (SARA) Exit the TCEQ are key partners in this project.

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The commission adopted these TMDLs on July 25, 2007.

The EPA approved them on September 25, 2007, at which time they became part of the state's Water Quality Management Plan.

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Updates to TMDLs

From time to time, it is necessary to revise TMDLs to account for changing conditions in the watershed, such as new or amended permits, or urban growth, or to correct oversights in the original TMDL report. Revisions to the load allocations in TMDLs are made via the state’s WQMP, which is updated quarterly.

The WQMP provides projected effluent limits for use in planning and permitting activities under the Texas Pollutant Discharge Elimination System (TPDES). The TCEQ reviews all applications for new and amended permits for conformance with applicable portions of the WQMP, including adopted TMDLs.

Revisions to the TMDL are documented in the approved WQMP updates listed below.

Learn more about WQMP updates and about opportunities to comment on revisions to them.

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Implementation Plan

The TCEQ and Texas AgriLife are working with stakeholders to develop an I-Plan for the project watersheds.

The I-Plan will complement the watershed protection plan (WPP) for the Upper San Antonio River. The WPP, now being updated, was originally developed by SARA in 2007, together with stakeholders, the City of San Antonio, Bexar County, and other partners. The WPP was developed to allow early implementation of measures to reduce pollution; environmental improvement targets were based on data and information in the TMDL report. Get a copy of the WPP Adobe Acrobat PDF Document Exit the TCEQ on the SARA website.

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Get Involved

In all our projects, we seek opinions and information from stakeholders—people who represent government, permitted facilities, agriculture, business, environmental, and community and private interests in the watershed.

All stakeholders are welcome to get involved in developing the strategy to improve water quality. Public meetings about the project are open to everyone. Find out more about what it means to participate in TMDL projects.

Implementation Plan Development

Texas AgriLife is coordinating with people in the watershed to develop the I-Plan. A coordination committee representing diverse interests will develop the plan.

Everyone is welcome to participate in this project to improve the river. Meetings about the project are open to anyone interested.

Meeting Records

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Meeting Records, TMDL Development

A stakeholder committee called the San Antonio Bacteria TMDL Advisory Group assisted the TCEQ in developing the TMDLs. The group included volunteer members who represented government, permitted facilities, agriculture, business, environmental, and community interests.

Advisory Group Meeting Summaries and Presentations

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Reports and Other Documents

The following documents are provided in PDF.

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For More Information

Please e-mail us at, and mention the Upper San Antonio River Bacteria TMDL in the subject line. Or call us at 512-239-6682.

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