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How much does a Water treatment plant operator make in Illinois?
$55,556
/ Annual
Based on 22 salaries
The average water treatment plant operator salary in Illinois is $55,556 per year or $26.71 per hour. Entry level positions start at $43,017 per year while most experienced workers make up to $71,356 per year.
Median
$55,556
chart
Low
$43,017
High
$71,356

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