Why Does My Toilet Keep Running?

absolute plumbing Inc.


Back to Blog

A side-view shot of a man standing in his bathroom looking at his toilet, there is a problem, he is on the phone trying to call a plumber.

Why Does My Toilet Keep Running?


A running toilet is more than just a nuisance—it’s a silent water waster that can significantly increase your utility bills. Understanding the common causes behind a continuously running toilet can save you time, money, and frustration. At Absolute Plumbing, we’re here to help you diagnose and resolve this pesky plumbing issue.

Common Causes of a Running Toilet

A running toilet can be caused by several underlying issues, most of which are related to the internal components of the toilet tank. Understanding these common culprits can help you diagnose the problem quickly and determine whether a simple fix or professional repair is needed.

Faulty Flapper

The flapper is a rubber seal that covers the opening of the flush valve, controlling the flow of water from the tank to the bowl. Over time, the flapper can become worn or damaged, causing water to continuously leak into the bowl. If your toilet won’t stop running, inspecting the flapper is a good place to start.

Chain Issues

The chain connecting the flush handle to the flapper can sometimes get tangled or become too short or too long. This can prevent the flapper from sealing correctly, allowing water to escape. Adjusting or replacing the chain can often solve this issue.

Fill Valve Problems

The fill valve is responsible for refilling the toilet tank after a flush. If it’s not functioning properly, it may fail to shut off the water supply, causing the tank to overflow or run continuously. Replacing a faulty fill valve is a common fix for a running toilet.

Float Misalignment

The float determines the water level in your toilet tank. If the float is set too high, water will continuously overflow into the overflow tube. Adjusting the float height can help maintain the correct water level and stop your toilet from running unnecessarily.

Worn-Out Flush Valve Gasket

The flush valve gasket forms a seal around the flush valve. If this gasket becomes worn or damaged, it can lead to leaks that cause the toilet to keep running. Replacing the gasket is often a simple and effective solution.

Why Fixing a Running Toilet Matters

Ignoring a running toilet may seem like a small inconvenience, but the consequences can be significant:

  • Increased Water Bills: A running toilet can waste hundreds of gallons of water daily, leading to higher utility costs.
  • Environmental Impact: Water conservation is crucial, and fixing a running toilet helps minimize water waste.
  • Potential Damage: Continuous leaks can damage the internal components of your toilet and lead to more costly repairs over time.

When to Call a Professional Plumber

If you’ve tried troubleshooting your toilet and it still won’t stop running, it’s time to call a professional plumber. Issues like hidden leaks, incorrect installation, or aging components can be difficult to diagnose without the proper tools and expertise.

At Absolute Plumbing, we specialize in identifying and fixing all types of toilet issues. From simple repairs to full replacements, we ensure your toilet functions efficiently and reliably.

Toilet Repair in Flower Mound, TX

Don’t let a running toilet drain your wallet or waste precious water. Absolute Plumbing in Flower Mound, TX, is your trusted partner in resolving all toilet repair needs. Contact us today to schedule an appointment and restore peace to your home. Whether it’s a quick fix or a more in-depth repair, we’re here to help!