The answer to 'when to replace water line replacement' is that homeowners should consider replacing their water lines every 20-50 years, depending on the material and condition. Older galvanized steel or lead pipes are more prone to corrosion, mineral buildup, and leaks over time and may need to be replaced sooner. Newer PEX or copper pipes can last 30-50 years with proper maintenance.
Signs it's time to replace your water lines include low water pressure, discolored or smelly water, frequent leaks, and old age. Calling a professional plumber to inspect the lines and provide recommendations is the best way to determine if replacement is needed.