Guidance – Water Quality Standards

• 2017 Utah Implementation Guidance for the 2013 USEPA Ammonia Criteria for the Protection of  Aquatic Life (1.52 MB)
• Waste Load Allocation Procedures (1.06 MB)

Standards Support Documents

• 2020 Kanab Creek Use and Value Assessment and Revised Criteria for Dissolved Solids (17 MB)
• 2019 Standards Revisions Support Document (2 MB)
  • Attachment 2: Criteria Support Document: Site-specific criteria based on recalculated aquatic life water quality criteria for ammonia for a segment of Mill Creek and the Jordan River, Salt Lake County, Utah (2 MB)
  • Attachment 3: Criteria Support Document: Use and Value Assessment and Site-specific Criteria for Total Dissolved Soils (TDS): Silver Creek, Version 2.2 (2 MB)
• 2018 Standards Revisions Support Document (49.7 MB)
• 2017 Historical Survey of Unionid Mussels and Nonpulmonate Snails for Utah and Colorado (1.34 MB)
• 2017 Study Plan for Historical Surveys of Unionid Mussels and Nonpulmonate Snails (284.54 KB)
• 2013 Site-specific TDS criteria for Blue Creek and Blue Creek Reservoir (5.53 MB)
• 2009 Site-specific TDS and Sulfate Criteria for Quitchupah Creek, Emery County, Utah (38.55 KB)
• 2008 Selenium Standard for Great Salt Lake (49.69 MB)