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Why Does My Toilet Keep Running?

Why Does My Toilet Keep Running?

When you flush your toilet, does it run for about a minute afterward just enough to fill up the tank? Or does it continue to run for long periods of time without stopping? A running toilet is not only aggravating to listen to but is also wasting a significant amount of water (and money)! On average, a toilet that runs consistently throughout the day can waste up to 200 gallons a day. With that being said, this is a problem that should never be ignored. The first step is getting to the root of the problem, and discovering what’s causing it to continuously run. Below are some common issues that we often find are the root of the problem.


Chain of Flapper is Caught/Tangled

One of the most common issues is that something is wrong with the chain that lifts the flapper when the toilet is flushed. It can either be caught on another component in the toilet or become tangled, making it so the flapper cannot close all the way. This allows the water to continuously run from the tank to the bowl, without ever filling up completely. Luckily, this is an easy fix. Just lift the lid of the tank and get the chain to be free again.


Decaying Flapper

This is a common issue in older toilets. The rubber of the flapper can deteriorate, making it unable to create an effective seal. In this case, the flapper will need to be replaced. If your toilet is very old, you may want to replace it with a new model that will allow for additional water savings.


Leaky Fill Valve

The fill valve is the part that’s responsible for the flow of water into the tank after each flush and shuts it off when the water level is high enough. Over time, it can become worn, or out of alignment causing it to leak. A leaky fill valve will cause the water to continue running even after the tank is full. Although it may not overflow, you’re still wasting a significant amount of water. Replacing the fill valve is the best solution.


Leaky Gasket

The gasket is another part that can be worn over time and allow water to seep into the bowl from the tank. A plumber will need to separate the tank from the bowl and replace the gasket to solve this issue.


Broken Float

If your toilet is a bit older, it may still use a float to register the water level and shut the fill valve. The float can become punctured or waterlogged, which would prevent it from rising and activation the fill valve. This may be a sign that it’s time for a new toilet.


Contact Daigle Plumbing, Heating & Cooling

If you have a continuously running toilet, we can help! Fill out a contact form or give us a call today at 603.434.6353


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"Your mechanic did a great and thorough job. He explained everything in detail, and really went the extra mile on this job. Please thank him for his thoughtfulness!"Bob G., Fremont, NH
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