Rusty or reddish-brown water coming exclusively from your hot water taps is typically caused by advanced internal corrosion and electrochemical oxidation inside your water heater tank. Over time, as the sacrificial anode rod becomes completely depleted, oxygenated water reacts directly with the bare steel tank walls, causing rust flakes to mix into the stored water supply. Alternatively, deteriorating galvanized steel supply pipes or heavy sediment accumulation can also discolor hot water. Verification: Flush your water heater tank; if rusty water persists, the tank interior is severely rusted and requires replacement.
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