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Arizona's Integrated 305(b) Assessment and 303(d) Listing Report describes the status of surface in Arizona in relation to state water quality standards. The report also contains a list of Arizona's impaired surface waters, including a list of surface waters requiring the development of a Total Maximum Daily Load (the 303(d) List). The report fulfills requirements of the federal Clean Water Act sections 305(b) (assessments), 303(d) (impaired water identification), and 314 (status of lake water quality).
Please note: This report does not provide information about the quality of water being provided by Arizona's public drinking water systems. See Safe Drinking Water for more information.
2004 Integrated 305(b) Assessment and 303(d) Listing Report
Draft 2006 Integrated 305(b) Assessment and 303(d) Listing Report
Draft Surface Water Assessment Methods and Technical Support
Draft Surface Water Assessment Methods and Technical Support
Watershed Assessments
Submitting Data for the 2008 Report
Credible Data Requirements
See also:
Fact Sheet: Assessing and Protecting Surface Water Quality
TMDL Program
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