Quote Originally Posted by Grace47 View Post
Pipes for intake of water do not connect with the pipes for outtake. In my house they are even different colors. The intake pipes are white, the outtake pipes are black. I grew up in an old house on a farm and we often had problems with brown water. It was rust 100% of the time. This is a rather common water problem in houses with metal pipes. At any rate, at no point do the intake and outtake pipes connect. If sewage should get into the water supply, it would be at the source and there would be a boil water alert for your area. I have lived in areas where this happened.

Thank you, this is helpful. I do live in an older house (70's) so it is probably rust.