Administrative Assistant salary at Costa Mesa Sanitary District

The average administrative assistant salary at Costa Mesa Sanitary District was $76,107 , which is 19 percent lower than the average salary for this job in California, but 1 percent higher than the national average for this job . Administrative Assistant salaries at Costa Mesa Sanitary District typically range from $71,183 to $81,030 (25th to 75th percentile). The highest reported administrative assistant salary was $81,030. There are 2 employees at Costa Mesa Sanitary District with the job title administrative assistant.