303(d) List

The 303(d) List is a compilation maintained by environmental agencies that identifies water bodies, such as rivers and lakes, which do not meet water quality standards for specific pollutants. These water bodies are called "impaired" because pollution or other issues prevent them from supporting their designated uses, like swimming or fishing. Listing them helps prioritize cleanup efforts and funding to improve water quality. By addressing these impairments, agencies work to restore healthy and safe water environments for people, wildlife, and recreation.