The cause of your toilet gurgling is a blocked line somewhere. A clog is creating negative air pressure, Instead of air flowing through the lines,the air pushes back and causes the gurgling sound. Sometimes, you’ll also see the toilet water bubble.

How do you fix a gurgling toilet?

The Fix. For this kind of blockage, clear the things floating on the water, plus the ones stuck in the toilet. If it’s further down, you can unblock the toilet with a plunger. Ensure the plunger completely covers the drain hole and start by giving it a good ten to twenty plunges to see if you can dislodge the blockage.

Why does downstairs toilet gurgles when upstairs toilet is flushed?

When a toilet gurgles, suction is building up in the drain line, which causes an airlock. Since the same pipe connects to both your upstairs and downstairs toilet, there may often be some clog in the mainline connecting to the neighborhood sewer.

Can a gurgling toilet fix itself?

Can a Gurgling Toilet Fix Itself? It is possible the gurgling sounds go away on their own if the drain clog clears itself or you remove any debris from the vent stacks on the roof. If the issue lies in your main sewer line, you’ll need the help of professional plumbers.

Should I plunge a gurgling toilet?

Seal off the drains in nearby sinks, showers, and tubs, and then plunge the toilet. If the cause of the gurgling is in the drainpipe, simply plunging the toilet might create enough pressure to dislodge a light-to-moderate clog, such as one resulting from flushing cotton-tip swabs that got wedged in the drainpipe.

Why does basement toilet bubble when upstairs is flushed?

Your problem is the distance the water/waste is falling. To eliminate the bubbling a vent would need to be added or an up flow valve after the basement toilet prior to entering the main line. Up flow valves are like a check valve to prevent lower floors from having this problem.

Why is my downstairs toilet bubbling?

When water can’t go down your drain as quickly as it needs to, then bubbles will sometimes form in air pockets or gaps in the pipe behind the drain clog, When these air gaps fill with water or liquid going down the drain, bubbles go back up the drain line, leading to the bubbling you see in your toilet.

How do you tell if your sewer vent pipe is clogged?

How to Tell if Your Plumbing Vent is Clogged

  1. A Primer on Plumbing Vents. …
  2. Water Takes A Long Time to Drain. …
  3. Dry and Empty Toilet Tanks. …
  4. Foul Smells. …
  5. Gurgling or “Glugging” Sounds as Water Goes Down the Drain. …
  6. Get Those Clogs Out of Your Plumbing Vent ASAP.


Where is the toilet vent pipe located?

In older homes, a vent may also be located under a kitchen or bathroom cabinet at a level above the p-trap. Like the plumbing vent, a p-trap prevents odorous gas from seeping up through a toilet, sink or floor drain. It’s the U-shaped piece of pipe beneath your sinks and behind the toilets.

How do you unclog a main sewer line?

Hot Water to Loosen Sticking Debris



Allow hot water to run through your plumbing system for at least five to 10 minutes. The hot water helps to loosen debris such as deposited grease, oils, or any coatings on the walls of the drains. Doing this several times might best and easiest way to unclog that main sewer line.

Why does my toilet gurgle after flushing?

Toilet Clog



If your toilet is bubbling and gurgling when you flush, your toilet itself may be clogged. This is usually caused by excess waste or buildup of non-flushable products. Toilet clogs don’t always cause a dramatic overflow; sometimes the only sign of a clog is some bubbles here and there.

Can you put Drano in a toilet?

You can use Drano® Clog Removers to unclog a kitchen sink, bathroom sink, shower or clogged bathtub, but DO NOT use them in toilets. For clogged or slow-running drains, apply the product and let it work 15 minutes, then flush with hot water. For tough problems, allow 30 minutes before flushing.

Why does one toilet gurgle when another is flushed?

What Causes a Toilet to Gurgle or Bubble When Flushed? Bubbles in the toilet, a toilet that drains slowly, or one that gurgles is telling you something specific: You have a blockage. For water and waste to flow through your pipes, the air pressure has to be just right.

Why does my downstairs toilet bubble when I take a shower upstairs?

The cause of your toilet gurgling is a blocked line somewhere. A clog is creating negative air pressure, Instead of air flowing through the lines,the air pushes back and causes the gurgling sound. Sometimes, you’ll also see the toilet water bubble.

Why does one toilet bubble when I flush the other?

A clogged mainline (contact us!)



The mainline leads all the wastewater from your home’s fixtures to your city connection. If the clog affects your entire house, such as a one toilet flushing causes another to bubble, then the issue is likely the main. The mainline can be the cause of toilet bubbling.

How do you fix a gurgling toilet UK?

If your toilet is blocked, try clearing it with a plunger. The act of plunging a toilet up and down creates a strong suction with force strong enough to remove the clog and successfully clear the blockage.

How do you tell if your sewer vent pipe is clogged?

How to Tell if Your Plumbing Vent is Clogged

  1. A Primer on Plumbing Vents. …
  2. Water Takes A Long Time to Drain. …
  3. Dry and Empty Toilet Tanks. …
  4. Foul Smells. …
  5. Gurgling or “Glugging” Sounds as Water Goes Down the Drain. …
  6. Get Those Clogs Out of Your Plumbing Vent ASAP.


How do you unclog a sewer line?

Hot Water to Loosen Sticking Debris



Allow hot water to run through your plumbing system for at least five to 10 minutes. The hot water helps to loosen debris such as deposited grease, oils, or any coatings on the walls of the drains. Doing this several times might best and easiest way to unclog that main sewer line.

How do you unclog a vent pipe?

Quote from the video:
Quote from Youtube video: And go to the vent and start putting the snake down through the top of the vent. So once the snake comes into contact with the clog. It'll. Stop this rod right here allowing you to push it down.

Where is the toilet vent pipe located?

In older homes, a vent may also be located under a kitchen or bathroom cabinet at a level above the p-trap. Like the plumbing vent, a p-trap prevents odorous gas from seeping up through a toilet, sink or floor drain. It’s the U-shaped piece of pipe beneath your sinks and behind the toilets.

How much does it cost to clear a plumbing vent?

Plumbing vent cleaning costs $100 to $200 on average. Signs stacks aren’t venting include bad odors, slow drainage, gurgling noises, or when someone flushes a sink and another sink makes a noise. Using an open cover or screen at the end of the vent pipe prevents debris from clogging.