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when i flush the toilet the sink gurgles

Why Does Your Sink Gurgle When the Toilet Flushes?

If you’ve wondered, “When I flush the toilet, the sink gurgles,” Al Coronado Plumbing solves your mystery below.

Your sink might make some noise when you run it, but otherwise, it should stay silent. Nip this issue in the bud with professional drain cleaning in Oro Valley, AZ, or read on for tips.

When I Flush the Toilet, the Sink Gurgles – Why?

If you’re running a search for “sink gurgles when toilet flushes,” consider what gurgling means: air is moving through water. For example, could air from the commode’s pipes be disturbing the water in your sink drain? Maybe drainage from one fixture has released built-up pressure in the other.

Here are five other possibilities for gurgling sinks.

#1 Common Drain Blockages

A partially blocked bathroom sink drain might make noises with every toilet flush. The flush pushes trapped air through the pipes because it needs somewhere to go. Air and water pushing through partially blocked fixtures could result in gurgling.

Other blocked drain symptoms include:

  • Slow water drainage
  • Scummy smells of decay
  • Noticeable hairs or slimy residue emerging from the opening

If there’s a clog, getting a plumber out quickly could save you a lot of trouble.

#2 P-Trap Problems

Every sink has a trap in the shape of a P, designed to keep drainage smells from infiltrating the room. The P-trap’s curved piece is where the sink or toilet’s downward drain meets the mainline. If debris becomes caught in the curve or the trap dries out, you’ll have drainage issues and bad smells.

Are you asking, “When I flush the toilet, the sink gurgles – why?” The P-trap might need a local plumber like Al Coronado Plumbing to clean it out. It’s among the things you forget to clean, so professional services can make a huge difference.

#3 Sewer Line Concerns

Are the P-trap and immediate drain opening in good shape, but there’s a sewer gas smell? Your system might have a hidden blockage or leak that’s causing air to belch around the sink. Blockages lurking in your sewer system may include:

  • Tree roots infiltrate pipe materials
  • Sticky waste and debris form a sizable clog
  • Soil shifts cause sunken or fractured pipes

Corroded materials also enable air and dirt to enter the plumbing.

#4 Clogged Vent Stacks

The gurgling problem might originate above your home rather than below. Your property’s drainage system includes a vent stack that opens above your roof to let out sewer gases.

Have squirrels or birds stored food or crafted nests in the opening? A plumbing vent problem traps smelly air inside and causes irregular drain noises.

#5 Aging Plumbing

If you hear something with a routine toilet flush, sink noises often mean it’s time to upgrade or retrofit some plumbing components. New fixtures, pipes, and connectors silence the drain and ensure the plumbing works flawlessly.

Al Coronado Plumbing Makes Clogs Magically Disappear in Oro Valley, Arizona

“When I flush the toilet, the sink gurgles!” Just call Al Coronado Plumbing at 520-834-8400 for great plumbers in Oro Valley, AZ! We tackle noisy or smelly drains, damaged sewer lines, and more.