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What causes a toilet to leak from the base when flushing?

Leaks from the base during a flush usually mean the wax ring seal has failed or the closet bolts are loose. A cracked or misaligned toilet flange can cause the same symptom. Sometimes water from a dripping supply line or tank-to-bowl bolts runs to the base and looks like a wax-ring leak. In Bastrop and Elgin homes, we confirm the cause with inspection and give clear, upfront repair options.


Updated: 2025-12-29 00:00:00


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