The answer to 'water line replacement frozen' is that frozen water lines can be a common problem, especially in colder climates. This occurs when the water inside the pipes freezes, causing the pipes to expand and potentially burst. Common causes include lack of insulation, drafty areas, and extreme cold temperatures.
Symptoms of frozen water lines include no water flow, frost on the pipes, and potentially burst or leaking pipes. Solutions can include thawing the pipes using a space heater, heat lamp, or warm water, as well as insulating the pipes to prevent future freezing. However, if the pipes have already burst, it's best to call a professional plumber to assess the damage and replace the affected sections.