Illinois

Grundy County

2 of the 9 named waters in Grundy County carry a fish consumption advisory. Those are listed first below — the rest have no advisory on file.

Contaminants found here: Mercury, PCBs

Waters with advisories

• Heidecke Lake lake
• Mazon River river

Other named waters in Grundy County

7 waters with no advisory on file. Listed so you can confirm we've looked — not as evidence the fish are safe.

• Aux Sable Lake
• Collins Cooling Pond
• Dresden Island Pool
• East Fork Mazon River
• Goose Lake
• Negro Slough
• West Fork Mazon River