EPA National Recommended Water Quality Criteria - Aquatic Life
Federal recommended water quality criteria for the protection of aquatic life under the Clean Water Act.
EPA’s recommended water quality criteria for the protection of aquatic organisms. These criteria are used by states to establish water quality standards under the Clean Water Act (CWA) and are referenced in NPDES (National Pollutant Discharge Elimination System) discharge permits. Includes both acute (short-term) and chronic (long-term) criteria for freshwater and saltwater. Note: the full table spans multiple pages on the EPA site.