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

A toilet leaking from the base when flushing usually means the wax ring seal has failed. Rocking or loose closet bolts can break that seal and let water out at the floor. A cracked toilet base or a misaligned toilet can also cause base leaks. Sometimes a tank‑to‑bowl gasket leak runs down and looks like a base leak. In Marion and Gas City homes, prompt repair prevents subfloor damage.

Quick steps:

  • Shut off the toilet’s supply valve.
  • Avoid flushing.
  • Call for service to reseat and reseal.

Updated: 2025-12-21 00:00:00

Need help in Marion, IN? Call (765) 613-0053 or book online.

"They provided a same day service for a leaking toilet." — Wesley and Marlin customer

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