May 21, 2025

How to Repair a Running Toilet in Simple Steps

A running toilet isn't just an annoyance—it can waste hundreds of gallons of water daily, leading to increased utility bills and potential water damage. Fortunately, fixing a running toilet is often a straightforward DIY task. This guide will walk you through simple steps on how to repair a running toilet and common issues causing your toilet to run continuously.

Key Takeaways

  • Common culprits for a running toilet include faulty flappers, fill valves, and improperly set floats.
  • Many issues can be fixed with basic tools and replacement parts available at hardware stores.
  • Routine checks can prevent minor issues from escalating into major problems.
  • Don't hesitate to call professionals like Express Plumbing and Drain Service for complex issues.
  • Prompt repairs not only save money but also conserve water, benefiting the environment.​

Understanding the Problem

Before diving into toilet repair, it's essential to understand how a toilet operates. When you flush, water from the tank flows into the bowl, facilitated by a flapper valve. As the tank empties, the flapper closes, and the fill valve refills the tank to a set level. If any component malfunctions, it can cause the toilet to run continuously.​


Tools and Materials Needed

  • Adjustable wrench
  • Screwdriver
  • Replacement flapper or fill valve (if necessary)
  • Towel or sponge
  • Bucket​


Step-by-Step Repair Guide

1. Turn Off the Water Supply

Locate the shut-off valve behind the toilet near the floor. Turn it clockwise to stop the water flow. Flush the toilet to drain the tank, and use a towel or sponge to remove any remaining water.


2. Inspect the Flapper

The flapper is a rubber valve at the bottom of the tank. If it's warped, cracked, or doesn't seal properly, water will leak into the bowl, causing the toilet to run. Replace the flapper if it's damaged.​


3. Check the Chain

Ensure the chain connecting the flapper to the flush handle isn't too short or tangled, preventing the flapper from sealing. Adjust the chain length so there's a slight slack when the flapper is closed.​


4. Examine the Fill Valve

If the flapper isn't the issue, the fill valve might be faulty. The fill valve controls the water level in the tank. If it's not shutting off properly, water will continue to flow. Consider replacing the fill valve if it's malfunctioning.​


5. Adjust the Float

The float determines the water level in the tank. If it's set too high, water will spill into the overflow tube, causing the toilet to run. Adjust the float to ensure the water level is about an inch below the top of the overflow tube.

How Express Plumbing and Drain Can Help You

While many running toilet issues can be resolved with DIY methods, some problems may require professional assistance. Express Plumbing and Drain Service, serving Desert Hot Springs, CA, and surrounding areas, offers expert plumbing services to address any toilet issues efficiently.​


Why You Should Choose Express Plumbing and Drain Service

  • Experience: With years in the industry, their skilled plumbers have encountered and resolved a wide range of plumbing problems.
  • Reliability: As a family-owned and operated business, they prioritize customer satisfaction and provide dependable services.
  • Affordability: They offer high-quality services at reasonable prices, ensuring value for your money.
  • Licensed Professionals: Their team comprises licensed and trained professionals committed to excellence.
  • Customer-Centric Approach: Express Plumbing and Drain Service offers senior discounts and is known for its courteous and respectful service.​

Conclusion

Repairing a running toilet is a manageable task that can save you money, conserve water, and prevent further plumbing issues. By understanding the common causes—like faulty flappers, chains, fill valves, and floats—you can often resolve the problem using basic tools and replacement parts. 


However, if the issue persists or seems too complex, professional help is just a call away. Express Plumbing and Drain Service offers reliable, affordable, and expert plumbing solutions for residents in Desert Hot Springs, CA, and surrounding areas. Don’t let a small issue turn into a costly repair—take action today for peace of mind and long-term savings.

Frequently Asked Questions

  • How do I know if the flapper needs replacing?

    If the flapper is warped, cracked, or doesn't seal properly, it should be replaced. You might notice water continuously running into the bowl.

  • Can I adjust the water level in the tank myself?

    Yes, by adjusting the float, you can set the water level. Ensure it's about an inch below the overflow tube's top.

  • How often should I inspect my toilet for issues?

    It's advisable to check your toilet's components every six months to ensure everything functions correctly.​

  • What if replacing the flapper doesn't stop the running?

    If the issue persists, the fill valve or overflow tube might be the problem. Consider consulting a professional plumber.​

  • Is it expensive to hire a plumber for a running toilet?

    Costs vary, but many plumbing services offer affordable rates for common issues. Express Plumbing and Drain Service, for instance, provides quality services at reasonable prices.​

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