COVID-19: Offices of the Utah Department of Environmental Quality are open. In an effort to reduce the spread of COVID-19, we are limiting person-to-person contact. Please contact DEQ here to conduct business.

Guidance – Water Quality Standards

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)

Quick Links Menu Graphic