The answer to 'how much is water line replacement' is that the cost can vary widely depending on several factors. Typically, water line replacement can range from a few hundred dollars for a simple DIY job up to $5,000 or more for a professional full-service replacement, especially for longer runs or more complex installations.
The main factors that influence the cost include the length of the water line, the material (copper, PEX, etc.), the accessibility and location of the line, any necessary excavation or landscaping work, and whether you hire a professional plumber or attempt a DIY project. Getting multiple local quotes is essential to understanding the specific costs for your home.