While MassDEP has made enormous strides in reducing mercury emissions from facilities across the state, significant levels of the toxic heavy metal still persist in the environment - particularly in certain lakes and streams, making the fish that inhabit them less healthy to eat. Learn about agency monitoring and research initiatives, as well as Department of Public Health (DPH) advisories on eating fish taken from bodies of water across Massachusetts.

Environmental Monitoring

Fish Consumption Advisories

  • Massachusetts Department of Public Health

    Database of freshwater fish consumption advisories, searchable by community.

  • Fish Testing Request Form pdf format of Fish Testing Request Form
doc format of Fish Testing Request Form
    Ask for testing of fish from a specific lake, pond, river, or stream. Samples are generally tested for mercury and other metals, pesticides, and PCBs. February 1 is the annual deadline for fish testing requests.