Four Common Reasons Why Your Toilet Doesn’t Flush

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Four Common Reasons Why Your Toilet Doesn’t Flush

Are you wondering why your toilet won’t flush? These four common causes will help you understand why your toilet won’t flush. It’s a nuisance when your toilet doesn’t flush. This is one of the most common calls we receive here in Los Angeles.

911 Restoration LA area has been to over 2,700 “my bathroom won’t flush” service call. We are experts in our field and would love to share some tips with you that will save you money and not have to call a plumber. Let’s start by showing you the anatomy of a toilet so that you can refer back to it while you read the post below.

These are some of the most common problems we’ve encountered with toilet flushing issues:

Water Just Rises When I Flush.

This is a sign that your outlet, trapway, or weir has become clogged. Be very careful if this happens. Our clients have been known to flush their homes, then walk off and flood their homes. Turn the little valve at the bottom of your toilet quickly.

The Tank Doesn’t Have Enough Water

This can lead to toilet problems. Low water levels can cause a weak flush that is not strong enough for solids to be flushed away.

How It Creates A Weak Flush

You are actually letting water out of the tank when you flush your toilet. The toilet will not flush if there is too much water in the tank.

Tip: Flush the toilet for an additional 10 to 15 seconds. If the tank isn’t stocked with enough water, it won’t flush as much water. A weaker flush will be noticed or water could enter the toilet bowl without it starting to flush.

Here’s How You Can Fix It

To indicate how much water the tank should hold, most toilet manufacturers place a mark in it. Take off the tank lid and locate the mark in the tank. After each flush, make sure that the water level is at its highest.

If you are unable to find the manufacturer’s mark on your tank, ensure that water levels rise just below the overflow tube. Adjust the tank if the water level is not at the mark. Different toilets have different components that adjust the tank’s water level. The majority of older toilets have a rod and float ball. The vertical fill valve will stop filling the tank when water touches the bottom. You can adjust the water level depending on what you have.

My Toilet Tank Will Not Fill

If you find yourself in this situation, it is more likely that there is debris between the shutoff valve and the tank’s bottom. Turn off the water supply and disconnect the water flexible hose from the tank. Use a small bucket to clean out any debris. If this doesn’t work, it could be your fill valve.

My Toilet Tank Water is All the Way to The Top. I don’t have a clog. However, it’s still very slow. Calcium deposits build up in the rim holes can cause this problem. Restoring water flow can be done by cleaning the bowl ports/rim flush holes.


Toilets are made up of many parts. It’s not difficult to see. You may want to replace your toilet if you are constantly dealing with issues with the flushing. It’s especially important if the toilet is older. We hope you found this helpful. If you have any questions or need assistance, please contact them here:

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