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Why Isn't My Toilet Flushing?

Writer: Chris Roeder
Chris Roeder
Sep 28
5 min read

When you push the toilet handle, everything in the bowl is supposed to disappear. What if it doesn’t, though? Maybe the water swirls, or the bowl starts filling, instead. Or, the handle might move without triggering any type of flush at all. 


Are you wondering, “Why isn’t my toilet flushing?” If so, the problem could be a very simple fix. Other causes, however, might require the help of a plumber. They can also help with qiestions such as why does my toilet whistle?


Before reaching for the phone, however, it’s best to check a few things first.


Is the Toilet Clogged?

Is the Toilet Clogged?


One of the most common reasons a toilet won’t flush is because of a clog. If you flush the toilet and the water rises instead of draining, stop trying to flush. The more you flush, the more likely it is that the bowl will overflow. 


Start with a toilet plunger. This is a flange-style flusher that has an extended rubber part that is meant to fit into the toilet bowl drain. Usually these create a better seal than a flat plunger. 


Place the plunger over the drain opening and plunge the tool firmly several times. If the clog is minor, it may clear. 


If a plunger doesn’t work, a toilet auger may be able to reach a blockage that is further in the trap. If that doesn’t work, then call emergency plumbers in Madison MS. 


Is There Enough Water in the Tank?


To flush effectively, you need to make sure there is enough water in the tank. Remove the lid and look at the water level. In many toilets, the correct level is about an inch below the top of the overflow tube. Though, some toilets actually have a fill line to show where the water should lie. 


If the tank isn’t filling enough, the toilet can produce a weak or incomplete flush. There are several things that can cause a low water level, including a float that needs to be adjusted or an issue with the fill valve. 


Adjusting the float may allow more water into the tank. If the tank still won't fill properly, the fill valve may need attention.


Check the Toilet Handle and Chain


If you push the handle and nothing happens, look inside the tank. The handle is connected to a level, which uses a chain to lift the flapper at the bottom of the tank. When the flapper rises, water rushes into the bowl and creates a flush. If the chain is loose or broken, when you push the handle, the flapper will not lift. 


The chain can also cause problems if it has too much slack. It needs to be long enough for the flapper to close completely but short enough to lift it properly when you press the handle.


Reconnecting or adjusting the chain may be all that's necessary to restore the flush.


Is the Flapper Working Properly?


The flapper controls the release of water from the tank into the toilet bowl.


Over time, rubber flappers can deteriorate, warp, or become damaged. A flapper that doesn't lift properly may prevent enough water from entering the bowl to produce a complete flush.


Watch the flapper while someone presses the toilet handle. It should lift enough to allow the tank to drain and then fall back into place.


If it closes too quickly, the chain may need adjustment. If the flapper itself is worn or damaged, replacing it is generally an inexpensive repair.


Make sure you purchase the correct flapper for your particular toilet.


Why Does My Toilet Flush, but Only Weakly?


Sometimes the toilet technically flushes, but the water moves slowly or doesn't completely clear the bowl.


A partial clog is one possibility. Unlike a complete blockage, a partial clog may allow water to pass while restricting the flow enough to produce a weak flush.


Another potential problem involves the openings that deliver water into the bowl.


Mineral deposits can gradually accumulate in the small rim jets located underneath the toilet bowl rim. Deposits can also affect the siphon jet found near the bottom of some toilets.


When these openings become restricted, the toilet may not receive the forceful flow of water needed for an effective flush.


Cleaning mineral buildup may help restore performance.


What if the Toilet Keeps Clogging?


An occasional toilet clog isn't necessarily a sign of a larger plumbing problem. Frequent clogs are different.


If you're reaching for the plunger every few days, there may be an underlying issue.

Possible causes include excessive toilet paper, items being flushed that shouldn't be, an older low-performing toilet, or a blockage farther down the drain line.


Only human waste and toilet paper should generally be flushed. Items marketed as "flushable," including some wipes, may not break down as readily as toilet paper and can contribute to plumbing problems.


Recurring clogs warrant a closer look rather than simply plunging the toilet every time it happens.


Could Something Be Stuck in the Toilet?


Households with young children are particularly vulnerable to mysterious toilet clogs.


Small toys, toothbrushes, personal care products, and other objects can accidentally end up in the bowl. Unlike toilet paper, these objects don't dissolve and may become lodged inside the toilet trap.


A plunger might not remove a solid object and could potentially push it farther into the toilet.


A toilet auger may help retrieve or dislodge certain objects. In other cases, the toilet may need to be removed to access the obstruction.


If you suspect something solid was flushed, tell your plumber what may have gone down the toilet. That information can make diagnosing the problem easier.


Could the Problem Be Deeper in the Plumbing?


If more than one plumbing fixture is having trouble draining, the problem may not be the toilet itself.


A blockage in a branch drain or main sewer line can affect multiple fixtures in your home. You might notice toilets bubbling, sinks draining slowly, or water backing up into a bathtub or shower.


Those symptoms deserve prompt attention.


A deeper drain or sewer problem generally requires professional equipment to locate and clear the obstruction. Continuing to use plumbing fixtures when wastewater is backing up can lead to a much larger and messier problem.


When Should You Call a Plumber?

When Should You Call a Plumber?


Simple issues such as a disconnected chain or minor clog can often be handled without professional help. But if basic troubleshooting doesn't restore the toilet's normal operation, calling a plumber can save time and prevent further problems. They can also help with situations like how to fix running toilet?


Professional service may be appropriate when:


  • The toilet repeatedly clogs

  • Plunging doesn't clear the blockage

  • Multiple drains are slow

  • The toilet bubbles or gurgles

  • Water backs up elsewhere

  • Internal toilet components need replacement

  • You suspect a sewer-line problem


The important thing is determining whether you're dealing with a minor toilet issue or a symptom of a larger plumbing problem.


If your toilet won't flush or keeps giving you trouble, Roeder's Plumbing can diagnose the cause and provide the appropriate repair. Whether the solution is clearing a stubborn clog, replacing worn toilet components, or addressing a problem farther down the drain line, fixing the underlying issue can get your bathroom back to normal and help prevent another unpleasant surprise.


 
 
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