303(d) Threatened and Impaired Waters List

{
  "id": "MLC-T-ENV-000051",
  "term": "303(d) Threatened and Impaired Waters List",
  "field": "Environment",
  "definition": "Under Section 303(d) of the Clean Water Act (CWA) or Act, states, territories, and authorized tribes are required to develop lists of impaired waters every two years (i.e., Section 303(d) list). The states identify all waters where required pollution controls are not sufficient to attain or maintain applicable water quality standards. States are required to establish priorities for development of TMDLs for waters on the 303(d) List (40C.F.R. §130.7(b)(4)).",
  "subject": "Water",
  "references": [
    "Impaired Waters and Total Maximum Daily Loads Glossary"
  ],
  "url": "https://mlchart.com/terminology/environment/303-d-threatened-and-impaired-waters-list/"
}