The answer to 'how long does pipe last' is that the lifespan of pipes can vary significantly, but with proper installation and maintenance, most pipes can last 50-100 years or more. The actual lifespan depends on the material, installation quality, water quality, and environmental factors.
Copper pipes typically last 50-100 years, while PVC and PEX pipes can last 70-100 years. Cast iron pipes may last 50-75 years, and galvanized steel pipes usually need replacement after 40-50 years. Proper installation, avoiding corrosive water, and regular maintenance like cleaning and inspections can help extend the life of pipes in your home.