Average Base Salary
Average Hourly Rate
The average water treatment plant engineer salary in Arkansas, United States is $79,264 or an equivalent hourly rate of $38. This is 12% lower (-$10,936) than the average water treatment plant engineer salary in the United States. In addition, they earn an average bonus of $2,663. Salary estimates based on salary survey data collected directly from employers and anonymous employees in Arkansas, United States.