You Install a New Fill Valve in Toilet but It Continues to Leak

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Does your toilet keep running and you're not sure why? When you flush, the fill valve inside the tank refills the water, but it could also cause leaks if there's an issue. Even though a new fill valve sounds like a lot, they're pretty inexpensive and it only takes a few minutes to install. In no time, you'll have a working, leak-free toilet!

This article is based on an interview with our professional plumber, James Schuelke, co-owner of the Twin Home Experts. Check out the full interview here.

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• Question

  Why is my toilet fill valve leaking?

  

  Dave Jones
  Master Plumber, Roto-Rooter Plumbing & Water Cleanup

  Dave Jones is a Professional Plumber and the Midwest Regional Vice President at Roto-Rooter Plumbing & Water Cleanup. In 1992, Jones joined Roto-Rooter as a drain service technician at the age of 18. Since then, he has risen through the ranks into positions of increasing authority. Dave served as general manager of Roto-Rooter's Charlotte, North Carolina, and Atlanta, Georgia branches before being promoted to Contractor Area Manager and later to Regional Vice President. Dave holds Master Plumber Licenses in Pennsylvania, North Carolina, and Georgia.

  

  Master Plumber, Roto-Rooter Plumbing & Water Cleanup

  Expert Answer

  Usually, this occurs when water seeps past the flush valve assembly causing the fill valve assembly to turn on and add water to the toilet tank.

• Question

  How do you tell if there is an issue with the flush valve assembly?

  

  Dave Jones
  Master Plumber, Roto-Rooter Plumbing & Water Cleanup

  Dave Jones is a Professional Plumber and the Midwest Regional Vice President at Roto-Rooter Plumbing & Water Cleanup. In 1992, Jones joined Roto-Rooter as a drain service technician at the age of 18. Since then, he has risen through the ranks into positions of increasing authority. Dave served as general manager of Roto-Rooter's Charlotte, North Carolina, and Atlanta, Georgia branches before being promoted to Contractor Area Manager and later to Regional Vice President. Dave holds Master Plumber Licenses in Pennsylvania, North Carolina, and Georgia.

  

  Master Plumber, Roto-Rooter Plumbing & Water Cleanup

  Expert Answer

  You can add a couple of drops of food coloring to the water. Wait for 10-15 minutes. If the water in the toilet bowl starts changing colors, you could have an issue with the flush valve assembly.

• Question

  How can you stop a toilet from running if it has a flapper-style flush valve assembly?

  

  Dave Jones
  Master Plumber, Roto-Rooter Plumbing & Water Cleanup

  Dave Jones is a Professional Plumber and the Midwest Regional Vice President at Roto-Rooter Plumbing & Water Cleanup. In 1992, Jones joined Roto-Rooter as a drain service technician at the age of 18. Since then, he has risen through the ranks into positions of increasing authority. Dave served as general manager of Roto-Rooter's Charlotte, North Carolina, and Atlanta, Georgia branches before being promoted to Contractor Area Manager and later to Regional Vice President. Dave holds Master Plumber Licenses in Pennsylvania, North Carolina, and Georgia.

  

  Master Plumber, Roto-Rooter Plumbing & Water Cleanup

  Expert Answer

  Check that the chain connecting the flapper valve to the toilet handle is not too tight or loose. Then check if there is any obstruction around the flapper that is not allowing it to move freely and create a tight seal.

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• If you notice water leaking from the bottom of the tank onto the floor, try tightening the plastic nut on the bottom of the fill valve to ensure it's tight. If it still leaks, you may need to replace the fill valve.

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• If you tried all these fixes and your toilet still runs, then you could have a leaky flapper seal.

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• Try to stop leaks as soon as possible so you don't run up your water bill.^[15]

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