{"data":{"id":"us/40-cfr-131.31","jurisdiction":"us","citation":"40 CFR 131.31","heading":"Arizona.","body":"(a) [Reserved]\n(b) The following waters have, in addition to the uses designated by the State, the designated use of fish consumption as defined in R18-11-101 (which is available from the Arizona Department of Environmental Quality, Water Quality Division, 3033 North Central Ave., Phoenix, AZ 85012):\nCOLORADO MAIN STEM RIVER BASIN:\nHualapai Wash\nMIDDLE GILA RIVER BASIN:\nAgua Fria River (Camelback Road to Avondale WWTP)\nGalena Gulch\nGila River (Felix Road to the Salt River)\nQueen Creek (Headwaters to the Superior WWTP)\nQueen Creek (Below Potts Canyon)\nSAN PEDRO RIVER BASIN:\nCopper Creek\nSANTA CRUZ RIVER BASIN:\nAgua Caliente Wash\nNogales Wash\nSonoita Creek (Above the town of Patagonia)\nTanque Verde Creek\nTinaja Wash\nDavidson Canyon\nUPPER GILA RIVER BASIN\nChase Creek\n(c) To implement the requirements of R18-11-108.A.5 with respect to effects of mercury on wildlife, EPA (or the State with the approval of EPA) shall implement a monitoring program to assess attainment of the water quality standard.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER D—WATER PROGRAMS","PART 131—WATER QUALITY STANDARDS","Subpart D—Federally Promulgated Water Quality Standards"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"ad02cc1282db8ef738d07762b60a670bf71a2361f26876469fa0f4e778dcad13","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-131.22","next":"us/40-cfr-131.32"},"notice":"GroundRules: Original legal text. Not legal advice."}