Highest salary at Waterville Csd in year 2018 was $93,362. Number of employees at Waterville Csd in year 2018 was 71. Average annual salary was $23,608 and median salary was $22,691. Waterville Csd average salary is 50 percent lower than USA average and median salary is 48 percent lower than USA median salary. From 2017 to 2018, the median salary increased 2.4 percent.