Repository of Documents

Oklahoma

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Oklahoma's Water Quality Standards (Chapter 45) (PDF) (123 pp., 568 K): (Effective November 21, 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 Action purposes. See cover page for more detail.
Implementation of Oklahoma's Water Quality Standards (Chapter 46) (41 pp., 230 K): (Effective November 21, 2008) State regulation establishing the water quality standards provisions contained in Chapter 45, including implementation procedures for water quality criteria and antidegradation policy.