If your toilet is flooding clean water onto the bathroom floor while the bowl and trapway are completely unblocked, the issue is caused by a mechanical failure in the water supply system. This typically happens when the fill valve gets stuck open, a high-pressure supply hose bursts or detaches from the tank inlet, or the tank itself develops a major structural crack. Callout type="warning" title="Hygiene Warning": Shut off the wall water supply valve immediately to stop incoming flooding. Verification: Inspect the supply line connection and fill valve mechanism to identify the exact source of the water leak.
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