Leaking

[Casey kohl]

Hi I'm a newbie I've got a plumbing issue I'm mechanically inclined but a novice when it comes to plumbing Whenever I shower or do wash the sink gurgles and water leaks in the basement out of the clear tube that runs to the humidifier next to the furnace

 

[Geofd]

sounds like the drain that those three fixtures you mentioned is clogged