Water Treatment Plant Supervisor salary at Marin Municipal Water District

The average water treatment plant supervisor salary at Marin Municipal Water District was $199,435 , which is 38 percent higher than the average salary for this job in California, and 195 percent higher than the national average for this job . Water Treatment Plant Supervisor salaries at Marin Municipal Water District typically range from $193,310 to $205,559 (25th to 75th percentile). The highest reported water treatment plant supervisor salary was $205,559. There are 2 employees at Marin Municipal Water District with the job title water treatment plant supervisor.