Pacific Southwest, Region 9
Serving: Arizona, California, Hawaii, Nevada, Pacific Islands, Tribal Nations
Monitoring, Assessment and TMDLs
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Arizona Water Quality
Arizona Department of Environmental Quality is responsible for conducting monitoring, assessment, reporting under CWA Sections 303(d) and 305(b), and TMDL development for the State of Arizona. More information about Arizona's programs may be found at Arizona Department of Environmental Quality's Water Quality Monitoring and Assessment page. 
Water Quality Standards
Information on Arizona’s Surface Water Quality Standards can be found at the Arizona Water Quality Standards page.
EPA and Arizona Water Quality Contacts
Water Quality Assessment TMDL Summary Information for Arizona
Arizona's Integrated Report
On July 31, 2009, EPA partially approved and partially disapproved Arizona's 2006-2008 303(d) listing submission. EPA identified 23 additional waters and 5 additional pollutants for already-listed waters, for addition to Arizona's 2006-2008 303(d) list, dated November 2008.
EPA reviewed public comments received, and determined that the additional listings identified in the July 31, 2009 listing decision are appropriate. EPA’s letter of November 3, 2009 presents this final decision, and includes a responsiveness summary (summary of the comment received and EPA’s responses) and the additional waters and pollutants being added by EPA to Arizona’s 2006-2008 Section 303(3) list.
EPA Documents
- July 31, 2009: Staff report (PDF) (19 pp, 176K) and letter (PDF) (2 pp, 116K) regarding EPA's decision on Arizona's 2006-2008 Section 303(d) list submittal, and EPA's list of waters proposed for addition (PDF) (3 pp, 192K) to Arizona's list.
- November 3, 2009: EPA's final letter (PDF) (2 pp, 131K) regarding the decision on Arizona's 2006-2008 Section 303(d) list submittal, Responsiveness Summary (PDF) (10 pp, 86K), and EPA's list of waters proposed for addition (PDF) (3 pp, 49K) to Arizona's list.
State Documents
Arizona's most recent Integrated Report (305(b) Water Quality Assessment and 303(d) list) is available from the Arizona Department of Environmental Quality (ADEQ)
Questions concerning Arizona's 2006-2008 list should be directed to:
Jason Sutter (js9@azdeq.gov)
TMDL and Assessment Unit Supervisor
602-771-4468
Contacts for questions concerning Arizona's Integrated Report
TMDLs in Arizona
Information on the status of TMDLs being developed or previously developed by Arizona DEQ can be found on Arizona DEQ's TMDL Program Monitoring and Assessment page and EPA's Water Quality Assessment Report for Arizona. (Please note that the EPA TMDL tracking system is updated periodically but may not include all approved TMDLs.) In addition, EPA completed one TMDL for copper in Pinto Creek, AZ at the request of the State of Arizona.
Pinto Creek Copper TMDL
- Final TMDL (PDF) (47 pp, 155K)
- Appendices (PDF) (53 pp, 628K)
- Summary of Comments and Responses (PDF) (35 pp, 93K)
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