Fish contaminants

Data on fish contaminants is collected across Ontario. Contaminants are chemicals that could be harmful to environment and human health. Toxic contaminants can enter in waterbodies in different ways and can accumulate in fish. Contaminants include:

  • mercury
  • polychlorinated biphenyls (PCBs)
  • dioxins/furans
  • organochlorine pesticides and others.

We collect this data to:

  • track long-term trends in fish contaminant levels across the province
  • provide site-specific assessments
  • evaluate the success of remedial measures put in place to reduce contaminants
  • provide fish consumption (eating) advice

For more information


Data Available

The data described here is available for you to use. [Learn more]
[See the licence for how you're allowed to use this data.]

2005 - 2018

Supporting Files

Additional Info

Field Value
Geographic coverage Ontario
Geography Breakdown None
Source URL/Address
Author Email
Maintainer branch Environmental Monitoring and Reporting Branch
Last Validated Date 2021-05-31
Update frequency Biannually
Access instructions