Vent Stack Clogged Here

The fix is not in the basement. It is on the roof.

That source is often the other P-traps in your house. vent stack clogged

Its job isn't to carry water. Its job is to carry air . Specifically, it brings fresh air into the plumbing system to equalize pressure. When you flush a toilet, a heavy column of water plunges down the pipe. Behind that water, a vacuum forms. The vent stack breaks that vacuum by supplying air. Without it, the water would suck the P-traps dry, allowing sewer gas to bubble up into your living room. The fix is not in the basement

For ice: A bucket of hot water mixed with rock salt poured slowly down the pipe. For debris: A plumbing snake or a long, flexible "vent cleaning brush" attached to a drill. You grind the gunk into submission, sending decades of decay down into the main sewer line. Its job isn't to carry water

It starts subtly. A hesitant gurgle from the kitchen sink as the dishwasher drains. A slow, mournful glug from the toilet tank after a flush. You ignore it at first, blaming the cheap toilet paper or a bit of grease. But within days, your plumbing becomes a stage for a horror show. The shower drain burps up foul-smelling air. The washing machine refuses to empty, leaving your clothes in a stagnant soup. And worst of all, the pristine water in the toilet bowl rises and falls like a tide, independent of any flush.

In severe cases, the drain speed becomes glacial. Water can’t flow downhill if a column of trapped air is pushing back up from below. Your morning shower becomes a 45-minute wait for a muddy puddle to disappear.