Treatment Plant Operator salary at Eureka

The average treatment plant operator salary at Eureka was $76,734 , which is 48 percent lower than the average salary for this job in California, and 3 percent lower than the national average for this job . Treatment Plant Operator salaries at Eureka typically range from $77,113 to $90,425 (25th to 75th percentile). The highest reported treatment plant operator salary was $105,462. There are 7 employees at Eureka with the job title treatment plant operator.