Water and Wastewater Treatment Plant and System Operator Salary Information in Washington

The average annual and hourly salaries for water and wastewater treatment plant and system operators in the state of Washington are shown in Table 1 and Table 2, respectively. The comparison of the salary statistics of water and wastewater treatment plant and system operators among Washington cities is shown in Table 3. The salary statistics are based on the national compensation survey conducted by the U.S. Bureau of Labor Statistics in 2017 and published in April 2018 [1].

Table 1 & 2. Annual & Hourly Salary of Water and Wastewater Treatment Plant and System Operators in Washington

Percentile BracketAverage Annual Salary
10th Percentile Wage
$42,350
25th Percentile Wage
$51,330
50th Percentile Wage
$60,610
75th Percentile Wage
$72,270
90th Percentile Wage
$81,080

Table 1 shows the average annual salary for water and wastewater treatment plant and system operators in Washington in 5 percentile scales. The average annual salary for the 90th percentile (the top 10 percent of the highest paid) is $81,080. The median (50th percentile) annual salary is $60,610. The average annual salary for the bottom 10 percent is $42,350.

Salary Trend (2012 to 2017)

The table and chart below show the trend of the median salary of water and wastewater treatment plant and system operators from 2012 to 2017.

YearMedian SalaryYearly Growth5-Year Growth
2017
$60,610
-0.64% 6.62%
2016
$61,000
-2.49% -
2015
$62,520
1.10% -
2014
$61,830
0.08% -
2013
$61,780
8.38% -
2012
$56,600
- -

Table 3. Median Annual Salary of Water and Wastewater Treatment Plant and System Operators in Washington Cities

Table 3 shows the median annual salary of water and wastewater treatment plant and system operators in some Washington cities and metropolitan areas. We note that the median annual salary of water and wastewater treatment plant and system operators in state of Washington ranges from $44,790 to $70,080. The highest paying area for water and wastewater treatment plant and system operators in Washington is Olympia with a median annual salary of $70,080. The second highest paying city/area in Washington State is Seattle-Bellevue-Everett (mean annual salary $68,930). The lowest paying area is Lewiston with a median annual salary of $44,790.

Cities/Areas Median Annual Salary
Olympia
$70,080
Seattle-Bellevue-Everett
$68,930
Seattle-Tacoma-Bellevue
$66,470
Bremerton-Silverdale
$65,590
Portland-Vancouver-Hillsboro
$62,560
Tacoma
$61,800
Longview
$60,210
Bellingham
$59,030
Kennewick-Pasco-Richland
$57,650
Spokane
$57,570
Southwestern Washington nonmetropolitan area
$57,320
Mount Vernon-Anacortes
$55,670
Northwestern Washington nonmetropolitan area
$55,420
Wenatchee-East Wenatchee
$54,830
Central Washington nonmetropolitan area
$53,240
Eastern Washington nonmetropolitan area
$48,900
Yakima
$48,690
Lewiston
$44,790




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