That sound of water trickling nonstop from your bathroom isn’t something you should get used to if you are trying to keep your water bill under control. If you’ve been wondering, “Why does my toilet keep running?” you’re in the right place. Crown Plumbing, your trusted plumbers in San Jose, CA, explain the common causes of this issue below.
The Most Common Reasons Your Toilet Keeps Running
Your toilet relies on several tank components working together to fill, flush, and reset after each use. When just one of those parts wears out or shifts from position, water can start running. The most common toilet problems are listed below.
A Worn or Warped Toilet Flapper
“Why does my toilet keep running?” A broken toilet flapper is one of the most common reasons. This rubber material can degrade from exposure to minerals in the water, or it may simply stop forming a tight seal.
When flappers fail, water slowly leaks from the tank into the bowl, causing the fill valve to kick on repeatedly. To check the flapper, put a few drops of food coloring in the tank and wait 15 minutes without flushing. If the color shows up in the bowl, your flapper isn’t sealing.
A Faulty Fill Valve
The fill valve is responsible for refilling the tank after each flush and shutting off once the water hits the right level. When it wears out or gets clogged with mineral buildup, it may not shut off completely, resulting in continuous water flow. You’ll often hear a hissing or trickling sound even when the toilet hasn’t been flushed recently.
A fill valve that’s past its prime usually needs to be replaced.
The Water Level Set Too High
Sometimes, the issue is that the water level inside the tank is set too high. When the water level sits above the top of the overflow tube, water spills continuously and drains into the bowl. This creates the illusion of a flushing toilet that never quite finishes.
The quickest fix is a water level adjustment. Depending on your toilet’s design, the plumber can lower the float by adjusting a screw on the fill valve or bending the float arm down.
A Chain That’s Too Long or Too Short
The chain connecting the flush handle to the flapper might seem like a minor detail. However, if the chain is too short, it keeps the flapper pulled up slightly, preventing it from sealing. If it’s too long, the chain might get trapped under the flapper, causing the same problem.
Adjusting the chain to leave just a little slack usually resolves this issue quickly.
A Damaged Overflow Tube
Still wondering, “Why does my toilet keep running?” The final issue to look for is an overflow tube that’s cracked or positioned too low. If the tube looks damaged, the only solution is usually to replace it.
Crown Plumbing Is Here To Help With Your Running Toilet in San Jose, CA
If your toilet keeps running and you have slow drains or water pressure problems, your property could have bigger plumbing concerns. It’s smarter to bring in a professional before a minor annoyance turns into a costly repair. While you’re looking after your plumbing, it’s also worth learning about what not to flush to keep future problems at bay.
If you’re dealing with a plumbing issue, give Crown Plumbing a call today at (669) 219-2233. We proudly serve homeowners throughout San Jose, CA.
Frequently Asked Questions
These are some common questions homeowners ask about running toilets.
How Much Water Does a Running Toilet Waste?
A running toilet can waste a significant amount of water, often between 20 and 200 gallons per day, depending on the severity of the leak. That adds up fast on your monthly water bill, so it is best not to delay plumbing repairs.
Is It Safe To Ignore a Running Toilet?
Ignoring a running toilet is not recommended. Beyond the wasted water, continuous flow can put ongoing stress on internal components and contribute to elevated moisture levels that promote mold growth. Fixing a small problem today can avert expensive repairs later.
Why Does My Toilet Keep Running After I Jiggle the Handle?
If it works, jiggling the handle is only a temporary fix. It may reset the flapper or free a stuck chain, but if you have to do it repeatedly, these components are likely worn out. Replacing the flapper is usually the permanent solution to this problem, though it depends on the underlying cause.