What is the name of the black and white pipe used for the lines? Why do pool contractors prefer the white pipe even though termites will eat it? About how long will the black pipe last? I just bought a house last year that has an old pool. I don't know if the pipes have ever been replaced but if I assume no then its about 40 years old. I dug up part of the pipes and they seem fine to me. Should I bother replacing them?