The city's utility department claimed Cook used 10 million gallons of water last month, charging her $29,787 for water, $43,581 for sewer, plus $893 for municipal tax.
"Luckily, when I opened the bill, I was sitting down," Cook said.
"I could have filled every pool in southern Illinois and still not used that much water."
Cook presented the bill to a public works employee at City Hall.
Officials quickly determined the whopping fee was the result of a broken meter and issued a corrected bill for $32.66 -- waiving Cook's monthly water and sewer charges for her troubles.