Question
Will the root system of the Golden Rain Tree cause damage to my sewer lines?

Answer
The major roots of Golden rain tree is a tap root system. The side roots are fibrous and cause no problem with sidewalks or foundations or sewer lines.. The roots will extend about twice the size of the width of the foliage and be about 6-18 inches under the ground. Their roots do not have a reputation of causing any problems.

New sewer lines are sealed and roots can not enter them. If you have the older type lines and if the tree is planted over a line you could have root clogs down the line. All trees would have this problem if planted over a line that they can enter. Newer lines household sewer pipes are generally made of either PVC (polyvinyl chloride) or ABS (acrylonitrile butadiene styrene) hard plastic, are very resilient and come in diameters ranging from 1 1/2 to 4 inches to fit different water fixtures. The pipe sections join to one another with cement and couplings

I would not expect any problems with golden rain tree and sewer lines.