The answer to 'lifespan of water line' is that the typical lifespan of a water line is 50-100 years, depending on the material and installation quality. Copper water lines tend to last the longest, often 70-100 years, while galvanized steel lines may only last 40-50 years. Plastic PEX lines can last 50-70 years when installed properly. Proper maintenance and regular inspections can help maximize the lifespan of your home's water lines.
It's important to have your water lines inspected by a professional plumber every 10-15 years to check for any signs of corrosion, leaks, or other issues that could lead to a premature failure. Catching problems early can save you from costly water damage down the road.