On August 7, 2015 EPA approved Arizona’s 2012/2014 Section 303(d) list. The approval letter and enclosure are provided below.

• EPA Approval Letter to Arizona Department of Environmental Quality (ADEQ) (PDF)(1 pg, 281 K, 08/07/2015)
  EPA’s approval of Arizona's 2012/2014 303(d) list.
• Enclosure: Review of Arizona’s 2012-2014 Section 303(d) List (PDF)(12 pp, 82 K, 07/07/2015)
  The purpose of this document is to describe the rationale for EPA's approval of Arizona’s 2012-2014 list of water quality limited segments requiring a Total Maximum Daily Load (TMDL) under Clean Water Act, Section 303(d).