Environmental Engineering Senior Supervisor Salary in Washington

How much does an Environmental Engineering Senior Supervisor make in Washington? (2025)

As of November 01, 2025, the average salary for an Environmental Engineering Senior Supervisor in Washington is $114,221 per year, which breaks down to an hourly rate of $55.

However, an Environmental Engineering Senior Supervisor's salary can vary significantly. Here’s a look at the typical salary range:

• Top Earners (90th percentile): $136,482
• Majority Range (25th-75th percentile): $103,425 to $125,873
• Entry-Level (10th percentile): $93,595