On an average, CPVC pipes can last for a minimum of 50 under normal operating conditions. Proper installation, and compliance with recommended operating temperatures and pressures contribute to the longevity of CPVC pipes. CPVC is resistant to corrosion and scaling buildup which helps maintain the integrity of the pipes over time.
https://www.truflopipes.com/blog/how-long-does-cpvc-pipe-last/
https://www.truflopipes.com/blog/how-long-does-cpvc-pipe-last/