A constantly running toilet is often caused by a worn-out flapper, a stuck toilet handle, a flapper chain with issues, a leaking valve, a misadjusted float, or a few other issues. Read below to learn about the 9 reasons why your toilet is constantly running.
1. Flapper Valve is Damaged
At the bottom of the tank is a rubber valve that lifts when you flush. If it is cracked or warped, it will not form a proper seal, allowing water to continue to drain. This is a fairly easy DIY fix and you can find a flapper at most hardware stores.
We recommend taking the old flapper to the store to find a matching replacement. When you connect the chain back to the new flapper, give it a little slack as a chain that is too tight or too loose can also cause problems.
2. The Toilet Handle Is Stuck
Sometimes the toilet handles gets stuck in the flush position. This causes the flapper to be raised and water to continue to move through the bowl. Press the handle partway a few times and see if it unsticks. You can also try jiggling the handle.
If none of these efforts fix the issue, it may be time to replace the handle mechanism. This is also another simple, inexpensive DIY fix.
3. Flapper Chain Issues
If the flapper chain is too short or tangled, this can also cause the toilet to constantly run. If the chain is too short, it keeps the flapper raised and allows water to run. If the chain is too long it can get caught under the flapper.
4. Incorrect Water Level/Float Valve Needs Adjusting
The float’s height ensures that the tank fills to the proper levels. If the float height is off, then the toilet will keep running. Turn the screw on the valve to raise or lower the water level. A clockwise or counterclockwise turn to the screw will cause water to either raise or lower.
5. Faulty Fill Valve
If the fill valve is faulty or worn out, it will cause problems with the toilet water flow. Inspect the fill valve, which is the tall mechanism on the left side, and see if it is leaking. This is a bit more complicated fix but can still be a DIY job. A kit can be purchased to replace the faulty parts.
6. The Overflow Tube is Damaged
The overflow tube directs excess water into the bowl, preventing the tank from overflowing. If the tube is cracked, water will leak. If the tube is damaged, you will need to replace the entire flush valve assembly. You can also do this yourself, or for this one you may prefer to call an experienced plumber.
7. The Water Pressure is Too High
High water pressure can also cause a toilet to constantly run, and cause other plumbing problems too. Fixing this involves installing a pressure reducing valve on the main water line entrance to the house or business. You’ll definitely want to call a professional plumber for this fix.
8. Hard Water Deposits are Interfering with Toilet Components
If you have hard water, mineral buildups can occur in the tank. Cleaning the toilet tank regularly can fix this issue. If you notice white or rust-colored deposits on tank components, soak the item in vinegar for a few hours. For severe hard water buildup and damage, the parts may need to be replaced entirely.
9. The Toilet Is Old and Needs Replacing
If the toilet continues to constantly have problems that need fixing, it may be time to replace the toilet. Contact an expert DFW plumber for a new toilet installation.
Running Toilet FAQs
Will a running toilet ever stop on its own?
Unfortunately, this is very rare. If jiggling the handle doesn’t fix the problem, then usually the toilet’s parts will need replacement. In a bad enough scenario, the entire toilet needs replacing.
What happens if your toilet runs all night?
When a toilet runs all night, it wastes water and may cause a flood in the bathroom if the toilet becomes clogged. If you’re on septic tank system, a toilet running all night can cause the tank to flood.
What are the signs of a toilet going bad?
When you are constantly having to unclog a toilet, replace parts, or if it flushes poorly, or is just an old toilet, then it’s time to replace the toilet.
Check out our other posts on toilets:
How to Use a Toilet Plunger/How to Plunge a Toilet
Why Is My Toilet Bowl Only Filling with Water or Overflowing When I Flush?
15 Things You Should Never Flush Down The Toilet
When you’re ready to have professional plumbing work done, contact Jerry’s Plumbing, Heating, & Welding. We’ll get the job done right the first time. Get peace of mind with Jerry’s Plumbing, Heating, & Welding.
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