Repository of Documents

Texas

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Texas Surface Water Quality Standards §307.1-307.10 (2000) (PDF) (144 pp, 419K): (Effective August 6, 2008) 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 info.; The corresponding provisions which are in effect for Clean Water Act Purposes can be found in Texas Surface Water Quality Standards §307.1_307.10 (1997) (PDF) (9 pp, 330K) (Effective April 30, 1997). See cover pages for more info.
Variances to Texas Surface Water Quality Standards (PDF) (3 pp, 54K): (Effective July 8, 2008) Information detailing variances from water quality standards for dischargers to Texas surface waters.
Water-Effects Ratios and Site-specific Criteria in the Texas Surface Water Quality Standards (PDF) (2 pp, 138K): (Effective April 29, 2009)