Treatment Plant Operator salary at Grass Valley

The average treatment plant operator salary at Grass Valley was $113,403 , which is 23 percent lower than the average salary for this job in California, but 44 percent higher than the national average for this job . Treatment Plant Operator salaries at Grass Valley typically range from $100,042 to $126,764 (25th to 75th percentile). The highest reported treatment plant operator salary was $126,763. There are 2 employees at Grass Valley with the job title treatment plant operator.