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Fish Contaminant Monitoring Program
Online Database


The Fish Contaminant Monitoring Program is part of MDEQ's comprehensive water quality monitoring strategy. Edible portion fish contaminant data are used by the MDCH to develop the Michigan Fish Advisory. Whole fish data are used to track contaminant trends and caged fish data are used to identify sources of pollutants and evaluate spatial trends of contaminant concentrations.
The MDEQ produces annual reports describing the results of fish contaminant monitoring conducted in the waters of the state. However, this site provides raw data without interpretation, conclusions or recommendations. Please contact Mr. Joe Bohr at or (517) 284-5525 if you would like additional information about the data available on this site.
To locate fish tissue sample contaminant information, start by choosing which type of fish samples you wish to view. Then narrow down your search to a specific location. Use any combination of criteria below to find locations in Michigan where fish samples have been collected.

Step 1: Choose Sample Types

Caged Fish

Caged Fish Studies are used to measure the presence or absence of some pollutants in waters of the state. Channel catfish measuring four to six inches, purchased from a commercial hatchery, are placed in stainless steel cages at various locations for 28 days.

Edible Portion

Edible portion samples are used to determine the need for sport fish consumption advisories and commercial fishing regulations.

Whole Fish

Whole fish samples are used to determine spatial and temporal trends and assess ecological risk to fish-eating birds and mammals.

Step 2: Find Location

County:(Leave blank if unknown)

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