Wastewater Treatment Plant Operator salary at Washington State Department of Corrections

The average wastewater treatment plant operator salary at Washington State Department of Corrections was $80,515 , which is 3 percent higher than the average salary for this job in Washington, and 12 percent higher than the national average for this job . Wastewater Treatment Plant Operator salaries at Washington State Department of Corrections typically range from $76,200 to $101,700 (25th to 75th percentile). The highest reported wastewater treatment plant operator salary was $103,200. There are 8 employees at Washington State Department of Corrections with the job title wastewater treatment plant operator.