The answer to 'types of water line replacement' is that there are several common methods for replacing a home's water supply line. The most common options are repiping, pipe relining, and pipe bursting.
Repiping involves completely removing and replacing the old water pipes with new ones, typically made of copper, PEX, or CPVC. This is the most comprehensive but also the most disruptive and expensive option. Pipe relining involves inserting a new lining material into the existing pipes to create a smooth, sealed interior without having to dig up the old pipes. Pipe bursting uses specialized equipment to break up the old pipes while simultaneously inserting new pipes, minimizing the need for excavation.