Locally caught fish are nutritious, but some fish contain chemicals such as polychlorinated biphenyls (PCBs), chlordane, and mercury. These chemicals get into the water fish live in and the food they eat. Some of these chemicals build up in fish and can cause harm to people who eat them over extended periods of time. It is important to keep your exposure to these chemicals as low as possible.
Illinois issues fish advisories to help you plan what sport fish to eat and how often they can be eaten. Advisories are not intended to discourage you from eating fish but should be used as a guide to eating fish low in contaminants. You can access meal specific advice for Illinois water bodies through the interactive fish advisory map here. Additional fish related information can be accessed under the RESOURCES and PUBLICATIONS sections of this page.