Why does my toilet gurgle when I do laundry?

Author: Rylan Harvey  |  Last update: Saturday, May 16, 2026

Your drains are partially or completely clogged – One of the most simple reasons your toilet is gurgling is because the main drain on your washing machine is clogged. When your washing machine drains, and there's a clog, the water path is shrunken or restricted.

Why does my toilet gurgle when I wash clothes?

It means that there is a blockage somewhere in your plumbing system. When the washing machine drains, it creates a vacuum effect that causes the toilet to bubble and indicates a blockage in the system. It could be in the main sewer line or one of the secondary sewer lines.

Why does my toilet make noise when I run the washing machine?

A gurgling toilet when your washing machine drains usually indicates a plumbing issue related to venting or drainage. Here are some common causes: Vent Blockage: Plumbing systems have vents that allow air to enter the pipes, which helps water drain smoothly.

How do you fix a gurgling toilet?

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.

Why do my drains gurgle when I do laundry?

Hair, grease, or other debris can clog the pipe, slowing down water flow. This leads to air bubbles and the gurgling sound when the washing machine drains. Fixing these issues is important to avoid bigger plumbing problems.

Plumbing Tips: What to do when Sink Gurgles when you Flush the Toilet

Why do my pipes make noise when I do laundry?

A common cause of water hammer can be fast-acting valves on appliances such as washing machines or dishwashers. These valves suddenly stop the water that is moving along the pipes. A shockwave results and this causes the pipes to shudder, causing the banging. The banging gets worse as the valves are worn.

Why does my toilet gurgle but drains fine?

There's a problem with the main sewer line.

If your toilet plumbing is running fine, the cause of toilet gurgling could be due to the main sewer line. The pipes in this line could have become corroded, or grease may have built up significantly.

Can a plunger fix a gurgling toilet?

Plunging is often the first line of defense against toilet clogs and can sometimes resolve gurgling issues. Follow these steps: Ensure there's enough water in the bowl to cover the plunger head.

How to unclog main sewer line?

Your step-by-step guide: How to clear a main sewer line clog
  1. Step 1: Loosen the cap on the drain pipe. ...
  2. Step 2: Open the cap and let the buildup drain out. ...
  3. Step 3: Feed the auger cable into the drain pipe. ...
  4. Step 4: Run the auger until the clog is clear—and beyond. ...
  5. Step 5: Hose down the pipe and auger cable.

Why is my laundry water backing up into my toilet?

Water backing up in the second load probably means the backup goes through the toilet, and there might be a clog within your lines. It's also common for washing machines to use the same drain as the sink.

Why is my toilet bubbling when the shower is running?

When pipes or vents become clogged or damaged, they create negative air pressure. Negative air pressure causes a toilet to bubble when the shower is running. The negative pressure pushes air back through your plumbing, causing the bubbling sound you hear.

When I flush the toilet the pipes hum?

If your bathroom pipes hum when you flush the toilet, the problem may be within one of the valves. Turn off each valve while the humming sound is present, and if the sound stops, you have found the source. It may be necessary to replace the valve for the fill tank.

Is toilet gurgling normal?

That gurgling sound isn't just your toilet clearing its throat – it's a sign that something's disrupting the normal flow of air and water within your plumbing system.

Where is the vent pipe on a toilet?

Behind or within the Wall: In most cases, the vent pipe for a toilet should run vertically from the toilet's waste pipe (known as the closet bend) and extend upward to connect with the main vent stack or a branch vent line that ultimately exits through the roof of your home.

How do I make my toilet stop gurgling?

Tips to Fix a Gurgling Toilet
  1. Try plunging: Start with a good old plunger. ...
  2. Snake the drain: If plunging doesn't work, try a drain auger, also known as a sewer snake. ...
  3. Check and clear the vent stack: Sometimes, a blockage in the vent stack causes toilet gurgling.

Why does my toilet bubble when I do laundry?

Your drains are partially or completely clogged – One of the most simple reasons your toilet is gurgling is because the main drain on your washing machine is clogged. When your washing machine drains, and there's a clog, the water path is shrunken or restricted.

How to remove air from toilet pipes?

Turn On Faucets Throughout Your Home

It is only necessary to open the faucets a half turn to allow the air in your pipes to escape. After you turn on all the cold and hot water faucets in your house, you should also flush your toilets to clear out the air trapped in your pipes.

Should I call a plumber for a gurgling toilet?

The fix is to plunge the toilet until the clog is removed. However, if you notice gurgling sounds even after removing the clog, you will want to have your plumber clean the sewer lines. For instance, there could be excess toilet paper still causing a partial clog and preventing proper airflow down the pipe.

What happens if you don't fix a gurgling toilet?

If your home and pipes are in good condition, you likely won't notice any damage at first. But over time, and with continued use, these can weaken your pipes and lead to leaks and other damage. The next time your drains are clogged or your bathroom sink gurgles, don't reach for the drain cleaner.

Does a gurgling toilet mean septic tank is full?

When your septic tank is excessively full, your toilet may start acting odd. You might find that your toilet doesn't fully flush or flushes very slowly and odd noises occur when you flush your toilet. These noises usually sound like gurgling or bubbling.

How do I stop my sink from gurgling when I flush the toilet?

By taking a few simple preventative measures – cleaning drains, ensuring clear vents, upgrading plumbing as needed, and avoiding obstructions to begin with – you can minimize disruptive air displacements and prevent most toilet-related sink gurgling occurences.

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