As of September 01, 2026, the average annual salary for Wastewater Engineer in Washington is $56,940, equivalent to $27 per hour, $1,095 weekly, or $4,745 monthly. These figures, sourced from Salary.com’s real-time job posting scans, highlight competitive earning potential for Wastewater Engineer in cities like San Jose, Santa Clara, and San Francisco.
Annually Salaries for Wastewater Engineer in Washington vary widely, spanning from $46,879 to $67,145. Most professionals fall between the 25th percentile ($51,674) and 75th percentile ($62,282), while top earners (90th percentile) make $67,145 per year. This $10,608 pay gap underscores opportunities for salary growth through certifications, specialized skills like Customer Service or Environmental Science, or targeting high-paying regions like District of Columbia or California.
Location and experience significantly influence earnings. For example, Washington Wastewater Engineer often earn 8.4% higher than national averages due to demand from Fortune 62 companies. However, Washington currently ranks 4 nationwide for Wastewater Engineer job salary. Professionals are advised to focus on high-growth sectors like to offset market challenges.
