Water and Wastewater Treatment Plant and System Operators Salary in Missouri

State wage data from the BLS OEWS survey, May 2025.

Median annual

$49,940

Median hourly

$24

Average annual

$53,190

Employed in state

3.0K

The median annual salary for Water and Wastewater Treatment Plant and System Operators in Missouri is $49,940, or about $24 an hour. That is 17% lower than the national median.

Pay in Missouri ranges from $38,600 at the 10th percentile to $64,930 at the 90th percentile. Roughly 3.0K people work as water and wastewater treatment plant and system operators in the state.

Pay distribution in Missouri

10th$38,600

25th$45,460

Median$49,940

75th$58,400

90th$64,930

Salary calculator

Pay amountPay period

Hours / weekWeeks / year

Hourly: $24.01
Daily: $192
Weekly: $960
Bi-weekly: $1,921
Monthly: $4,162
Annual: $49,940

$49,940 a year is around the 50th percentile for Water and Wastewater Treatment Plant and System Operatorss in Missouri. The median is $49,940.

Water and Wastewater Treatment Plant and System Operators — Missouri
Percentile	Hourly	Annual
10th percentile	$18.60	$38,600
25th percentile	$21.90	$45,460
Median	$24.00	$49,940
75th percentile	$28.10	$58,400
90th percentile	$31.20	$64,930
Average (mean)	$25.60	$53,190
Employment	3,000 people

Water and Wastewater Treatment Plant and System Operators pay by metro area in Missouri

Metro area	Median annual	Employment
St. Louis, MO-IL	$57,850	1.2K
Kansas City, MO-KS	$52,770	740
Cape Girardeau, MO-IL	$50,960	60
St. Joseph, MO-KS	$50,670	90
Columbia, MO	$50,270	90
Joplin, MO-KS	$49,750	100
Springfield, MO	$49,270	150
Jefferson City, MO	$48,550	70

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