Mailroom Assistant salary at Metropolitan Water District of Southern California

The average mailroom assistant salary at Metropolitan Water District of Southern California was $106,902 , which is 68 percent higher than the average salary for this job in California, and 441 percent higher than the national average for this job . Mailroom Assistant salaries at Metropolitan Water District of Southern California typically range from $98,271 to $115,532 (25th to 75th percentile). The highest reported mailroom assistant salary was $115,532. There are 2 employees at Metropolitan Water District of Southern California with the job title mailroom assistant.