Wastewater Treatment Plant Operator salary at County Of Frederick

The average wastewater treatment plant operator salary at County Of Frederick was $50,168 , which is 11 percent lower than the average salary for this job in Maryland, and 30 percent lower than the national average for this job . Wastewater Treatment Plant Operator salaries at County Of Frederick typically range from $43,582 to $54,804 (25th to 75th percentile). The highest reported wastewater treatment plant operator salary was $74,541. There are 19 employees at County Of Frederick with the job title wastewater treatment plant operator.