NVRC Northern Virginia Regional Commission
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What's a Total Maximum Daily Load (TMDL)?
  • TMDL is federal jargon for a "water pollution budget" for a particular water quality standard.
  • A TMDL is developed when that waterbody does not meet a specific water quality standard.
  • Results tell how much of each pollutant all of the contributors in a watershed can contribute and still ensure the waterbody meets water quality standards for that pollutant.
  • Each TMDL is specific to the waterbody / watershed of interest and a particular water quality standard.
  • Each TMDL is developed though both technical and scientific study and public participation.

Northern Virginia Regional Commission  3040 Williams Drive, Suite 200  Fairfax, VA 22031  703-642-0700 (Voice)  703-642-5077 (FAX)  Email Us