What should I do if my toilet won't flush but is not clogged?

If your toilet won’t flush and the bowl isn’t clogged, check the tank parts and water supply first.

• Lift the lid and make sure the flapper seals and the chain isn’t too tight or detached.
• Check the handle arm/lever connection.
• Confirm the shutoff valve is fully open and the tank fills to the marked level.
• Adjust the float. Replace the fill valve if the tank won’t refill.
• Pour 1 gallon of water into the bowl; if it flushes, the issue is in the tank.
• For leaks, constant running, or no water, call for service. We offer same-day and 24/7 emergency plumbing across Chicago.

<br/> Updated: 2025-12-26 <br/>

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