As in the United States and European countries, Canada screens all new chemical substances before allowing their manufacture or import. Canada has been doing this since 1994. However, many chemical substances were introduced prior to that time. Many of these older, or "existing substances," have not been examined by environmental and health scientists in government.
The Canadian Environmental Protection Act, 1999 (CEPA 1999) requires that all 23,000 existing substances be sorted or "categorized" to determine which need further attention.
In September 2006, Canada completed this scientific evaluation. The information is being used to focus on those chemical substances of highest priority.
On this page, you will find links to information on Canada's categorization of existing substances:
These fact sheets provide general information on various aspects of categorization under CEPA 1999.
The following links go to information (some technical), published by key groups involved categorization under CEPA 1999.