Earnings
Water/wastewater engineers earned a median salary of $87,000 in June 2025, as reported by Glassdoor.com. Salaries ranged from $68,000 to $111,000 or more. Environmental engineers employed in May 2024 earned a median salary of $104,170, according to the Department of Labor. Salaries ranged from $64,950 or less to $161,910 or more. Those who worked in waste treatment and disposal averaged $124,740 per year.
In addition to their pay, most water/wastewater engineers receive benefits such as paid vacation, holiday, and sick time; life and health insurance, a pension plan, and reimbursement for education and training related to their job.
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