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2000 Texas Surface Water Quality Standards

Documents for the 2000 Texas Surface Water Quality Standards, background information, and effective dates and portions.

2000 Standards as Rule

On July 26, 2000, the three-member commission of TNRCC (now TCEQ) adopted proposed amendments to the 1997 Texas Surface Water Quality Standards, as codified by rule in the Texas Administrative Code (TAC), Title 30, Chapter 307. The three-member commission adopted revisions to the Standards on June 30, 2010.

Status: EPA Approval of the 2000 Standards

EPA must approve the Standards for them to be used for federal permitting programs and other Clean Water Act purposes. EPA completed its final action on all revisions to the 2000 Standards in October 2009. Because EPA took no action or disapproved portions of the 2000 Standards revisions, the temperature criteria listed in Appendix A for the Comal River (Segment 1811) in the 1997 Standards remains in effect for any programs that fall under the Clean Water Act. For more information on more recent revisions to the Standards that are currently being used in federal permitting such as the TPDES program, see the main Water Quality Standards webpage. For non-federal programs, the most current adopted revision of the Standards is in effect. 

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Text of the 2000 Standards

The 2000 Standards, adopted by the commission on July 26, 2000, are available below in PDF. Additional documents related to the rule adoption are also provided.

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For More Information

For more information, e-mail us at or see contact information for staff members.

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