The answer to 'how long does water line replacement last' is that a properly installed new water line can last 50-100 years or more with proper maintenance. Water line materials like copper, PEX, and polyethylene are highly durable and resistant to corrosion, freezing, and other common issues that can affect older galvanized steel or lead pipes. With regular inspections and prompt repairs, a new water line can provide reliable service for decades.
The lifespan of a water line depends on factors like the material, soil conditions, water quality, and how the line was installed. Copper pipes tend to last the longest, often over 70 years, while PEX and polyethylene may need to be replaced after 50-70 years. Proper installation by a licensed plumber is crucial to maximize the lifespan of a new water line.