Skip to content. | Skip to navigation

Personal tools


Questions or Comments:
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

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

Overview and Goals

The goal of this current project is to reduce bacteria levels in parts of the San Antonio 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.

return to top Return to top

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

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.

return to topReturn to top

Draft 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 Upper San Antonio WPP Adobe Acrobat PDF Document Exit the TCEQ at Bexar Regional Watershed Management.

Updated Information The commission requests comments from the public on the draft implementation plan for the Upper San Antonio River.

return to topReturn to top

Public Meetings

The TCEQ will hold two meetings to provide the public with an opportunity to comment on the draft TMDLs and draft implementation plan.

October 29, 2015
6:00 p.m.
San Antonio Water System Customer Center
Conference Room 145
2800 U.S. Hwy 281 North
San Antonio 78212

November 12, 2015
6:00 p.m.
Floresville Event Center
600 State Hwy 97 West
Floresville 78114

At these meetings, individuals have the opportunity to present oral statements when called upon in order of registration. An agency staff member will give a brief presentation at the start of the meeting and will be available to answer questions before and after all public comments have been received.

Persons with disabilities who have special communication or other accommodation needs who are planning to attend the meeting should contact the TCEQ at (512) 239-6682. Requests should be made as far in advance as possible.

Written Comments

Comments may be submitted in writing by mail, fax, or online. Written comments must be submitted to the TCEQ no later than midnight on November 23, 2015.

Comments should reference the Implementation Plan for Three Total Maximum Daily Loads for Indicator Bacteria in the Upper San Antonio Watershed. 

Submit Comments by Mail

Address your comments to:

Lauren Young
Water Quality Planning Division
Texas Commission on Environmental Quality
MC 203
P. O. Box 13087
Austin, Texas, 78711-3087

Submit Comments by Fax

Attention: Lauren Young
(512) 239-1414

Submit Comments Online

Comment online at our eComments Web page. In the "Your Comments" section, select the report on which you wish to comment from the drop-down menu.

return to top Return to top


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.

Revisions to the TMDLs

From time to time, it is necessary to revise TMDLs to account for changing conditions in the watershed. Revisions to the load allocations in TMDLs are made via the state’s Water Quality Management Plan (WQMP), which is updated quarterly. Revisions are made to TMDLs in one of two ways:

  • Updates are made to account for changing conditions in the watershed, such as new or revised wasteload allocations, permits that have been canceled or have expired, or changed facility names.
  • Addenda are created to add load allocations for assessment units that are impaired by the same pollutant or condition, within the same watershed as in the original TMDL report.

return to top Return to top

Updates to TMDLs

Updates 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.

Updates 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.

return to top Return to top

Background Information

Meeting Records, Implementation Plan Development

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.

Meeting Summaries, 2005Meeting Summary, 2003Meeting Summary, 2002

return to top Return to top

Reports and Other Documents

return to top Return to top

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.

return to top Return to top

communities working together taking care of our rivers, lakes, and bays