What is the highest and lowest hourly pay for Plumbing Engineer?
As of May 01, 2026, the average hourly pay of Plumbing Engineer in the United States is $35. While Salary.com is seeing that the highest pay for Plumbing Engineer in the US can go up to $42 and the lowest down to $26, but most earn between $31 and $39. Salary.com shows the average base salary (core compensation), as well as the average total cash compensation for the job of Plumbing Engineer in the United States.