The average lifespan of a residential sewer drain pipe depends heavily on its material construction. Modern PVC and ABS plastic sewer pipes last 100 years or more, while traditional cast iron lateral lines typically last 50 to 75 years before succumbing to internal corrosion and rust scaling. Older Orangeburg bituminous fiber pipes or fragile clay tiles often require complete replacement after only 30 to 50 years due to root infiltration and structural crushing. Verification: Schedule a professional sewer scope inspection to evaluate the current material integrity of your underground lines.
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