Water Quality Standards Regulations: Texas

Presented below are water quality standards in effect for Clean Water Act (CWA) purposes for this state.

EPA is posting these standards as a convenience to users and has made a reasonable effort to assure their accuracy. Also, for each document listed under "State Standards in Effect for CWA Purposes", EPA has made a reasonable effort to identify parts of the standards that are disapproved or are otherwise not in effect for CWA purposes.

On this page:

State Standards in Effect for CWA Purposes
Federally Proposed or Promulgated Standards

State Standards in Effect for CWA Purposes

[See Texas Surface Water Quality Standards §307.1-307.10 (2018) ]
(Effective May 19, 2020) State regulation establishing water quality standards for surface waters of the state. Please note that not all parts of this document are effective for Clean Water Act purposes. See cover pages for more information. The corresponding provisions which are in effect for Clean Water Act Purposes can be found in:
- [See Texas Surface Water Quality Standards §307.1-307.10 (2014) ]
  (Effective September 23, 2014) Not all standards are in effect for Clean Water Act purposes; See cover pages for more information.
- [See Texas Surface Water Quality Standards §307.1-307.10 (2010) ]
  (Effective July 2, 2013) Not all standards are in effect for Clean Water Act purposes; See cover pages for more information.
- [See Texas Surface Water Quality Standards §307.1-307.10 (2000) ]
  (Effective July 2, 2013) Not all standards are in effect for Clean Water Act Purposes; see cover pages of 2010 and 1997 documents for more information.
- [See Texas Surface Water Quality Standards §307.1-307.10 (1997) ]
  (Effective April 30, 1997) Not all standards are in effect for Clean Water Act purposes; See cover pages for more information.
[See Variances to Texas Surface Water Quality Standards ]
(Effective November 5, 2020) Information detailing EPA-approved variances from water quality standards for dischargers to Texas surface waters.
[See Water Effects Ratios and Site-specific Criteria in the Texas Surface Water Quality Standards ]
(Effective March 5, 2020) Information detailing EPA-approved Water Effects Ratios (WERs) and Site-specific Criteria for Texas water quality standards.

Federally Proposed or Promulgated Standards

None at this time.

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Texas Surface Water Quality Standards §307.1-307.10 (2014) (PDF)(209 pp, 1 MB)
Texas Surface Water Quality Standards §307.1-307.10 (2010) (PDF)(169 pp, 2 MB)
Texas Surface Water Quality Standards §307.1-307.10 (2000) (PDF)(17 pp, 107 K)
Texas Surface Water Quality Standards §307.1-307.10 (1997) (PDF)(35 pp, 148 K)
Variances to Texas Surface Water Quality Standards (PDF)(5 pp, 219 K)
Water Effects Ratios and Site-specific Criteria in the Texas Surface Water Quality Standards (PDF)(2 pp, 64 K)
Texas Surface Water Quality Standards §307.1-307.10 (2018) (PDF)(216 pp, 2 MB)