Sudden hot water failures are common as storage tanks age; mineral accumulation from difficult water in parts of Geelong decreases

https://academy.educause.edu/eportfolios/12410/home/reasons-why-homeowners-trust-plumbers

Unexpected hot water failures prevail as storage tanks age; mineral accumulation from difficult water in parts of Geelong lowers effectiveness, creates roaring noises, and can cause leaks or irregular water temperature levels.