Upper San Antonio River: A Community Project to Protect Recreational Uses
San Antonio River
Watershed Counties: Bexar, Karnes, Wilson
Basin: San Antonio River
Segments: 1910, 1910A, 1010D, 1911, 1911B, 1911C, 1911D, 1911E
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 and the San Antonio River Authority (SARA) are key partners in this project.
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 coordinated with people in the watershed to develop the I-Plan. A coordination committee representing diverse interests developed the plan.
All stakeholders are welcome to get involved in implementing 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.
The TCEQ and Texas AgriLife worked with stakeholders to develop an I-Plan for the project watersheds.
The I-Plan will complement the existing watershed protection plan (WPP) for the Upper San Antonio River. The WPP, which was updated in 2014, 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. at Bexar Regional Watershed Management.
On April 5, 2016, the commission approved the I-Plan.
- Implementation Plan for Three Total Maximum Daily Loads for Indicator Bacteria in the Upper San Antonio Watershed
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.
- Three TMDLs for Bacteria in the San Antonio Area , Segments 1910, 1910A, and 1911
- Response to Public Comment
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.
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.
- October 2015, Appendix VI, page 15
- April 2015, Appendix V, page 32
- October 2014, Appendix V, page 17
- July 2014, Appendix VI, page 39
- April 2009, Appendix III, pages 18-19
- April 2010, Appendix IV, pages 19-20
Additional TMDLs for the Upper San Antonio River have been added by addendum:
- TMDL Addendum: Seven TMDLs for Bacteria in the Upper San Antonio River
April 2016 WQMP Update. Approved by EPA August 9, 2016.
Reports and Other Documents
- Technical Support Document for TMDL Additions, January 2015
- BMP Assessment, February 2014
- Site-Specific BMP Assessment , May 2013
- Inventory of Implemented Best Management Practices in the 2006 Watershed Protection Plan
- Upper San Antonio River Watershed Protection Plan , December 2006
For More Information
Please e-mail us at email@example.com, and mention the Upper San Antonio River Bacteria TMDL in the subject line. Or call us at 512-239-6682.