The answer to 'lifespan of water line' is that the average lifespan of a water line in a home is 50-80 years, depending on the material and local conditions. Copper and galvanized steel water lines typically last 50-70 years, while PVC and polyethylene pipes can last 70-80 years with proper installation and maintenance.
The lifespan of a water line can be affected by factors like water quality, soil conditions, and the quality of the original installation. Homeowners should inspect their water lines periodically for signs of corrosion, leaks, or other damage, and be prepared to replace the line if needed to avoid costly water damage or water loss.