Average Base Salary
Average Hourly Rate
The average wastewater treatment engineer salary in Arkansas, United States is $74,524 or an equivalent hourly rate of $36. This is 9% lower (-$7,407) than the average wastewater treatment engineer salary in the United States. In addition, they earn an average bonus of $2,295. Salary estimates based on salary survey data collected directly from employers and anonymous employees in Arkansas, United States.