Water Plant Operator salary at City of Thornton

The average water plant operator salary at City of Thornton was $75,469 , which is 34 percent higher than the average salary for this job in Colorado, and 37 percent higher than the national average for this job . Water Plant Operator salaries at City of Thornton typically range from $73,441 to $77,639 (25th to 75th percentile). The highest reported water plant operator salary was $77,639. There are 3 employees at City of Thornton with the job title water plant operator.