Catastrophic tank bursts where a water heater ruptures and floods a home are relatively rare, typically occurring only when an aging steel tank (older than 10 to 15 years) suffers from severe internal rust corrosion, or when a malfunctioning temperature and pressure (T&P) relief valve fails to discharge dangerous thermal pressure spikes. Routine maintenance, annual flushing, and replacing sacrificial anode rods dramatically reduce the risk of tank failure. Verification: Inspect the base of your water heater tank regularly for rust streaks, dampness, or weeping leaks.
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