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Lake Superior Zero Discharge Demonstration Program and Critical Chemical Reduction Milestones

The goal of the Zero Discharge Demonstration Program is to achieve zero release of certain designated persistent bioaccumulative toxic substances in the Lake Superior basin.

In 1990, the International Joint Commission challenged the governments of Canada and the United States to develop a program to virtually eliminate a group of “The Nine” persistent, bioaccumulative and toxic pollutants. The Nine pollutants are:

  • chlordane
  • DDT
  • dieldrin
  • dioxin
  • hexachlorobenzene
  • mercury
  • octachlorostyrene
  • PCBs
  • toxaphene
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