A toilet that will not flush may have an empty tank, a disconnected chain or mechanism, a flapper that does not lift, or a clog that prevents drainage. Before flushing repeatedly, check the bowl and tank water levels so a blockage does not turn into an overflow.
If the bowl is high, do not keep flushing
A bowl already close to the rim indicates that water is not leaving normally. Close the toilet shutoff valve if the level keeps rising and address the clog before triggering another flush.
If the tank is empty, check the fill system
Make sure the shutoff valve is open and the float is not stuck. If no water enters despite available supply, the fill valve or supply connection may need cleaning or replacement.
If the tank is full but the handle does nothing, inspect the chain and flapper
Carefully remove the tank lid and see whether the handle moves the chain and lifts the flush valve or flapper. A detached or overly long chain or a broken lever is usually visible and can be repaired without working on the drain.
A weak flush with normal tank parts points toward flow restriction
If the tank operates normally but bowl water barely moves, a partial clog or blocked rim jets may be involved. Do not keep adding chemicals; use appropriate mechanical methods and get help when multiple drains are also slow.
Sources
- U.S. Environmental Protection Agency WaterSense — Home Maintenance — Household maintenance related to water, leaks, and efficient use.