Water and Wastewater Treatment Plant and System Operators in Illinois
Local pay for water and wastewater treatment plant and system operators in Illinois, on the same wage scale as the U.S. Growth and openings are national.
SOC 51-8031
$67,810
median pay, Illinois
3,500
employed in Illinois
+13.0%
vs U.S. median
-6.5%
growth, 2024–34 (U.S.)
What water and wastewater treatment plant and system operators earn in Illinois
Illinois · annual wage · OEWS May 2025
Half of water and wastewater treatment plant and system operators in Illinois earn between $55,260 and $83,140 a year; the U.S. median is $60,020.
$42,240
P10
$55,260
P25
$67,810
MEDIAN
$83,140
P75
$103,690
P90
Pay by metro in Illinois
$79,290
$79,220
$77,830
$62,150
$61,720
$60,380
$59,870
$58,990
$20k $70k $120k