Treatment Plant Operator salary at City of Marlborough

The average treatment plant operator salary at City of Marlborough was $87,433 , which is 1 percent higher than the average salary for this job in Massachusetts, and 11 percent higher than the national average for this job . Treatment Plant Operator salaries at City of Marlborough typically range from $85,125 to $99,894 (25th to 75th percentile). The highest reported treatment plant operator salary was $100,698. There are 8 employees at City of Marlborough with the job title treatment plant operator.