Why Is My Toilet So Loud?

Why Is My Toilet So Loud

Loud noises in your home can be disruptive. And if the source of a high-pitched noise is related to your home’s plumbing, it can be cause for concern.

That being said, there isn’t a one-size-fits-all approach to figuring out why your toilet is making unusual noises. To address it properly, you’ll need to pay attention to what the noise sounds like.

5 Reasons Your Toilet Is So Loud

1. Running Water

Not only is the sound annoying, but the wasted water will also rack up your water bill. The most likely culprit for this issue is a faulty flapper. It could be either the rubber portion or the chain.

To inspect the flapper, shut off the water source and flush the toilet to empty the tank. Once it’s empty, check to see if the chain is too long or if the rubber is worn out. You can purchase replacement parts at any hardware store. For a video tutorial on how to swap them out, click here.

2. Hissing Sound

A hissing sound comes from a faulty fill valve. This is the part of the toilet that refills the tank after every flush. Regular wear and tear can cause it to stop shutting off once the toilet tank is full. Fortunately, this is an easy fix.

To replace your fill valve, follow the steps below:


  • Wrench
  • New Fill Valve


Step 1. Purchase a new fill valve

Step 2. Shut off the water supply to your toilet

Step 3. Use the wrench to disconnect the supply hose from the bottom of the tank

Step 4. Remove the old valve and replace it with the new one

Step 5. Reconnect the water supply line

Step 6. Turn the water supply back on

3. Phantom Flush

If your toilet sometimes sounds like it’s being flushed even though no one has flushed it, water is probably leaking from the tank to the bowl. Look into the bowl, if you don’t see any obvious leaks, place a couple of droplets of food coloring into the tank. Wait a few minutes, then check the bowl. If the water in the bowl is the same color as the food coloring, you definitely have a leak.

To fix it, simply change the rubber flapper, as instructed in the video above.

4. Gurgling Sound

A gurgling sound is a sign that a clog is causing air pressure buildup. First, try to dislodge it with a plunger. If that doesn’t work, you’ll have to snake the toilet. To learn how click here.

5. Vibrating

If you can hear a vibrating sound every time you flush, you have a “water hammer” in the water valve. Shut off the main cold water valve to your home and turn on all the cold water faucets throughout. This will clear the pipes of any air. Wait a few minutes, flush the toilets, and turn the main water valve back on.

Climate Design Can Help You

At Climate Design, we provide plumbing services throughout Tampa Bay: Clearwater, Largo, Palm Harbor, South Tampa, St. Pete Beach, Eastlake, Tarpon Springs, Safety Harbor, St. Petersburg, Sarasota, Bradenton, Lakewood Ranch, Palmetto, and New Port Richey.

If you’re having plumbing issues, we can help! Call us 24/7.

Call (888) 572-7245 to Schedule Your Appointment