A slow-draining, gurgling toilet is usually caused by a partial blockage in the drain or a blocked plumbing vent on your roof. Start by plunging the toilet. If that fails, clear the blockage with an auger, or check your roof's vent stack for debris.
A slow-draining, gurgling toilet almost always indicates a plumbing obstruction, an airflow issue, or a main sewer line clog. The gurgling sound happens when water displaces trapped air in your pipes, trying to force its way out because drainage is restricted.
While a bubbling toilet might seem like a minor nuisance, it's often the first sign of a more serious plumbing issue, like a blockage, vent problem, or sewer line obstruction. Ignoring the warning signs can lead to messy backups, costly water damage, and health risks from sewer gas exposure.
A gurgling toilet means trapped air or negative pressure is trying to escape your plumbing. Because it isn't clogged, the issue is likely a blocked roof vent pulling air from the toilet, or a partial clog in the main sewer line.
Place the plunger over the drain opening at the bottom of the toilet bowl and push down firmly, then pull up quickly. Repeat this plunging motion several times to create pressure and dislodge the blockage. If the blockage is severe, you may need to repeat the process multiple times.
Yes, because the issue can worsen, causing more extensive damage. Next, check if flushing clears the noise. If not, you might need more help from tools or a professional plumber to find and remove the clog causing the gurgle sounds. Keeping your toilet free from blockages helps prevent bigger plumbing issues later on.
Yes, Dawn dish soap is highly effective at unclogging toilets for minor, organic blockages. The soap acts as a lubricant to help waste slide through the pipes, while breaking down oils and fats. It works best on paper and waste clogs, not hard objects.
A Gurgling Toilet May Require Emergency Plumbing
If this vent stack becomes blocked, the air will escape through the toilet, causing it to gurgle. Additionally, a gurgling toilet may also be an indicator of a blocked sewer line. A blocked sewer line can cause serious plumbing issues and can even lead to flooding.
To remove air from water pipes, shut off the main water supply, open all taps and flush toilets, and then turn the main valve back on, starting from the top of the home to the bottom to expel air pockets.
How to Stop Toilet Gurgling in 5 Simple Steps
A sewer line that is breaking shows 4 early warning signs. Common signs include sewer gas odors near drains, repeated clogs and backups, mold or damp spots inside, and unusually lush or soggy areas in the yard along the pipe route.
A gurgling drain is rarely an immediate emergency, but it is a red flag for a developing plumbing issue. It typically means trapped air is struggling to escape your pipes, which can signal a slow-forming clog, an obstructed plumbing vent, or a failing sewer line.
[4,5] In the case of low levels of exposure (0.05 ppm), early signs and symptoms include the smell of rotten eggs, fatigue, headaches, nausea or vomiting, dizziness or lightheadedness, and poor memory and concentration.
Fixing a slow-draining toilet usually involves three easy steps: plunging the blockage, removing mineral buildup from the rim jets, or adjusting the water level in the tank. Start with the easiest methods and work your way up to the tools.
For homes connected to a septic system, a gurgling toilet could indicate that the septic tank is full or experiencing problems. A full tank can't process wastewater effectively, leading to a backup of air and gas that escapes through the toilet.
Valve Replacements: Valve replacements cost $50–$150 and resolve noisy or slow toilets. The fill valve refills the tank after each flush, the shut-off valve controls water flow, and the flush valve controls water coming from the tank to the bowl.
If the clog in your toilet is caused by excess tissue, products like Mr. Muscle and Drano can be viable solutions to break it down, but they come with drawbacks. Read Aspect knowledge article on using chemical drain unblockers for more information.
Plumbers typically use a specialized plumbing tool called a toilet auger (or closet auger) to break up or retrieve stubborn clogs. If the blockage is easily cleared, they rely on a heavy-duty flanged or bellows-style plunger to force the obstruction through the pipe.
A gurgling toilet means trapped air is trying to escape your plumbing, usually caused by a partial clog or a blocked roof vent. Start by plunging the bowl. If that fails, inspect the fill valve, or check for a main line obstruction if multiple fixtures are affected.
Common Symptoms of a Clogged Drain Vent Pipe
A slow-draining and gurgling toilet almost always means trapped air is trying to escape the plumbing system, typically caused by a partial clog or a blocked vent. As water slowly drains past the obstruction, air rushes back up through the toilet bowl, creating the gurgle.
In plumbing, the "135-degree rule" is a code standard that dictates how much a horizontal drain pipe can bend or change direction. It limits the total cumulative angle of pipe fittings before a system requires an access point (cleanout) or must be vented, ensuring proper flow and preventing chronic clogs.
Gurgling sounds after flushing usually indicate a vent pipe blockage or partial drain clog. Check roof vents for debris like leaves or nests obstructing airflow. Use a plumber's snake to clear minor drain clogs near toilets. Ensure drain traps are filled with water to prevent sewer gas entry.
PMRs for malignancies of the stomach, kidney, brain, and lymphopoietic system were also elevated, especially among plumbers. Chronic rheumatic heart disease, emphysema, liver cirrhosis, and all external causes of death were the major non-cancer causes with significantly elevated PMRs.
You can tackle a clogged sewer line using other strategies if you don't have a snake on hand. First, you can run hot water down the drain for 5 to 10 minutes to see if that helps break up the clog. If it doesn't, pour equal parts of vinegar and baking soda into a bowl and then pour that mixture down the drain.