Last week, the Illinois Department of Public Health released an updated consumption advisory for sport fish caught in Illinois.

Changes are the result of continued sampling by the Fish Contaminant Monitoring Program and do not suggest that Illinois fish are becoming more or less contaminated, the announcement stated.

"The advisories are not meant to discourage people from eating fish, but should be used as a guideline to help anglers and their families decide the types of fish to eat, how frequently and how to prepare fish for cooking to reduce possible contaminants," said Public Health Director Nirav D. Shah.

"There is no known immediate health hazard from eating contaminated fish from any body of water in Illinois," IDPH noted. "The main concern for regularly eating fish listed on the advisories is the effect of long-term exposure to low levels of pesticides and chemicals, such as polychlorinated biphenyls (PCBs), dioxins, chlordane and methylmercury.

The updated advisory and detailed information can be found on the IDPH website: dph.illinois.gov/topics-services/environmental-health-protection/toxicology/fish-advisories/map.

Kankakee carp

For the Kankakee River, IDPH's advisory applies only to carp caught downstream from the Kankakee dam, because of PCB contamination. From the Kankakee dam to the Wilmington dam, the advisory is no more than one meal of carp per week. For carp caught from the Wilmington dam downstream to the Illinois River, one meal per month.

Monee Reservoir

For the Forest Preserve District of Will County's Monee Reservoir, the only warning is a special mercury advisory for largemouth bass of all sizes — one meal per week for women beyond child-bearing years and males age 15 and older; one meal per month for children younger, women of childbearing years and those pregnant or nursing.

Heidecke Lake

For Heidecke Lake in Grundy County, special mercury advisories are in place for largemouth bass, channel catfish and crappie.

For largemouth bass less than 19 inches — one meal per week for women beyond childbearing years and males age 15 and older; one meal per month for children younger, women of childbearing years and those pregnant or nursing. A "do not eat" advisory is in place for largemouth bigger than 19 inches.

For channel catfish of all sizes — one meal per month for children younger, women of childbearing years and those pregnant or nursing.

For crappie — one meal per week for women beyond childbearing years and males age 15 and older; one meal per month for children younger, women of childbearing years and those pregnant or nursing.

Mazon River

For the Mazon River, because of PCBs — carp and channel cat of all sizes, one meal per week.

Des Plaines River

Advisories for the Des Plaines River from Lockport to the Kankakee River, PCB advisories are in place for carp, channel catfish and freshwater drum.

For carp less than 18 inches — six meals per year. For larger carp, "do not eat."

For channel catfish of all sizes, one meal per month. For freshwater drum of all sizes, one meal per month.

Illinois River

For the Illinois River, from the headwaters to the dam at Marseilles, advisories are in place because of PCBs for channel cat, carp, smallmouth and white bass.

The advisory for channel cat of all sizes is "do not eat."

For carp of all sizes, six meals per year.

For smallmouth bass of all sizes, one meal per month.

For white bass of all sizes, one meal per month.

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