We’ll help you solve the most troublesome problems with your toilet
Have you ever encountered a situation where the level of water in your toilet bowl stands lower than normal? And how about a situation where there is no apparent leakage on the floor? There could be many possible reasons behind such a fall in the water level. There could be a small crack in your toilet’s porcelain or the air vent could be blocked.
It is important that you figure out why water not staying in toilet bowl. This problem is usually recognized when you flush the toilet. The level of water seems normal right after you flush and then it drops. This situation can be quite tricky if you don’t see any leaked water on the floor. Before you fix this problem, it is important to find the reason behind it.
Find out the reason why the Water Not Staying In Toilet Bowl
There could be many possible reasons behind the fall in the water level of your toilet bowl. Get to know the most common reasons behind this event.
The filler tube may be damaged
This is probably the most frequently encountered reason behind the falling water levels in a toilet bowl. A damaged filler tube could be the reason why the water level in your bowl is falling but the water isn’t appearing on the floor.
A filler tube is a small hose made of plastic. It is quite flexible and is connected to a wider overflow tube that is also made of plastic. Both these tubes are situated in the toilet tank. This small and flexible tube is responsible for ensuring the adequate flow of water into the toilet bowl. So every time you flush the toilet, the water in the bowl is supplied through this tube.
It is possible for this small tube to get detached from the overflow tube. An old filler tube could also succumb to wear and tear. When this happens, water will enter the toilet bowl after you flush but it wouldn’t get filled completely because of the early shut down of a valve.
Correct the damaged fill tube
Whenever you encounter this problem, your first step should be to inspect the filler tube and see whether it is normal. There could be some damage due to wear and tear or the tube may have shifted from its normal position. You can repair this issue immediately if the filler tube is in a good condition and can be simply reattached to the overflow pipe. A damaged tube will have to be replaced. You can get a new fill tube from any hardware store.
There may be a blockage in the sewer line
There could be an issue with the sewer line. This is also a common reason behind falling water levels in a water bowl. The sewing line is an essential component of plumbing and it runs within the walls of your bathroom. Every time your toilet flushes, the sewer line works in removing the sewer gases from the toilet.
The free circulation of air in the sewer line is extremely important. The absence of free air flow could result in low water levels in the toilet. There could be many reasons behind the blockage in the sewer line. It can obviously be related to the inappropriate material you may have flushed in your toilet.
It can also be related to the debris and waste present on your roof. Note that the sewer line runs through the walls of your bathroom up to your house’s roof. Any waste material on the roof could also have a role in this. There could be branches, leaves, and other such waste materials. It is also possible that a bird has made a nest on your roof and blocked the sewer. Another possible reason could be a dead animal. There could be a dead mouse or a rat blocking the sewer line.
Another evidence of sewer line blockage is the presence of gurgling noises in the toilet when the other toilet is flushed. These noises are characteristic of blocked vents and are caused by the air being sucked through the toilet.
Correct the blockage in the sewer line
One obvious solution to this problem is to remove the waste and debris from the roof and thoroughly check the sewer vent. Any blockage can be removed with the help of proper instruments. The cap of the vent can be removed with the help of a screwdriver.
The blockage can be adequately cleared by spraying water with the help of a water hose. However, it is also possible for the water to overflow and create even more mess. If the blockage seems too difficult to be handled on your own, take the help of a plumber.

There might be a crack in the toilet bowl
This is not a common reason behind such a problem. The typical signs of a cracked toilet include sponginess, a wobbly floor, the formation of a mold. If there is a crack in the toilet bowl, water will leak down from the bottom and collect on the floor. You’ll see lower water levels in your toilet bowl. The crack could be small in size, a hairline fracture, or a relatively larger crack. In any case, it must be investigated by a plumber.
Correct the cracked toilet bowl
A cracked toilet bowl will have to be replaced. If the water leaks out indefinite puddles, you can easily identify the location of these cracks. However, a cracked toilet bowl cannot be repaired. It has to be replaced. Although, you can look for possible repair options by discussing the issue with your plumber.
There may be a problem with the fill valve
It is also possible that there’s a problem with your toilet’s fill valve. A problem with the fill valve of your toilet would cause issues in draining the toilet and also result in waste of water.
Correct the problem in the toilet’s fill valve
You need to turn off your toilet’s water supply to solve the problem with the fill valve. You ought to take the lid off and flush it so that all water is removed. Pull the valve up from its base and replace it with a new valve.
Once damaged, this valve cannot be repaired but it can be easily replaced. You can get an adequate replacement for this valve at any nearby hardware store. The new valve can be adequately secured under the tank with the help of a wrench.
Your pets may be drinking from the toilet bowl
However gross this sounds, it’s absolutely common and true. No matter how many amenities we provide for our pets, many of them prefer to dip their nose into the toilet bowl. To check this, you must keep an eye on your pet’s activities and see if they do this.
Stop your pets from drinking from the toilet bowl
To solve this problem, you can start covering the toilet bowl with its lid. Unless you have a very smart cat or dog who would lift the lid to drink water. You can also set up baby-proof devices to keep the lid down.
There may be a blockage in the back of the P-trap
It is possible that there is a blockage in the P-trap of your toilet bowl. If you flush hard things down the toilet, they could someday cause an obstruction and affect the bowl’s water level. If you dispose of objects like tampons, diapers, or other insoluble things in your toilet, they could block the P-trap and prevent the water in the bowl from draining.
Correct the blockage in the P-trap
Such an obstruction can be removed by disconnecting the toilet and clearing it with the help of simple plumber tools. You can also take the help of a professional plumber in this aspect.
There may be a build-up of sediments along the rim
If the water level in your toilet bowl is falling, one probable reason could be the formation of sediments along the rim. These sediments tend to reduce the water pressure that is released with each flush of the toilet. This issue should be inspected and treated by a plumber.
Correct the build-up of sediments around the rim
One method of clearing this build-up is by employing a mixture of dish soap and regular toilet cleaner and letting it remain in the bowl for some time. Another method involves a screwdriver and a mineral removing agent. With the help of these materials, the sediments can be scraped away mechanically.
Conclusion
You can definitely find solutions for the falling water levels in your toilet bowl. Your first step would be to find the reason behind this blockage. Then you can apply the apt correction procedure. In extreme cases, you might have to take the help of a plumber. Anyhow, all of such issues can be repaired.
