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

If the toilet won’t flush and the bowl isn’t clogged, the problem is usually in the tank. Check the handle, flapper, chain, and water level. Make sure the water shutoff valve is fully open and the float isn’t set too low.

Quick checks:

• Lift the tank lid and confirm the chain isn’t tangled and the flapper seals and lifts.
• Verify water reaches the marked fill line.
• Tighten a loose handle or adjust the chain length.
• Clean mineral buildup on the fill valve or rim holes.

Updated: 2025-12-24

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