Senior Wastewater Treatment Plant Operator salary at Modesto

The average senior wastewater treatment plant operator salary at Modesto was $83,293 , which is 46 percent lower than the average salary for this job in California, and 42 percent lower than the national average for this job . Senior Wastewater Treatment Plant Operator salaries at Modesto typically range from $81,915 to $84,457 (25th to 75th percentile). The highest reported senior wastewater treatment plant operator salary was $87,456. There are 7 employees at Modesto with the job title senior wastewater treatment plant operator.