Water Quality

​The Oregon Department of Environmental Quality uses water quality standards to assess whether the quality of Oregon's rivers and lakes is adequate for fish and other aquatic life, recreation, drinking, agriculture, industry and other uses. DEQ also uses the standards as regulatory tools to prevent pollution of the state's waters. The Clean Water Act requires states to adopt water quality standards designating beneficial uses of the state's waters and setting criteria designed to protect those uses. States submit their standards to the federal Environmental Protection Agency for approval.

Ab​​out Water Quality Standards

Find the Water Quality Standards at Oregon Administrative Rules 340, Division 41

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decorative image: hosmer lake
Hosmer Lake

Debra Sturdevant, 503-229-6691
Toll-Free in Oregon at 800-452-4011, ext. 6691