The average plumber salary at Austin Isd was $54,015 , which is 4 percent higher than the average salary for this job in Texas, but 39 percent lower than the national average for this job . Plumber salaries at Austin Isd typically range from $49,171 to $59,966 (25th to 75th percentile). The highest reported plumber salary was $64,022. There are 14 employees at Austin Isd with the job title plumber.