Was copper the correct pipe to be used? Should I be worried about it's life? I know my house had copper water pipes, of which the main feed was exposed to the sun and burried in the ground uncoated. It lasted 20 yrs with acidifc FL water. Would a copper pipe, which only has exposure externally to ground water, last "forever"? My water pipes only went bad because of internal corrosion caused by city water, not rainw ater.
In any event, should the exposed portions be coated/painted with anything to help protect them? What should be used?