Wastewater Engineer - Entry salary at King County

The average wastewater engineer - entry salary at King County was $96,705 , which is 41 percent higher than the average salary for this job in Washington, and 41 percent higher than the national average for this job . Wastewater Engineer - Entry salaries at King County typically range from $102,436 to $105,860 (25th to 75th percentile). The highest reported wastewater engineer - entry salary was $115,088. There are 5 employees at King County with the job title wastewater engineer - entry.