![Mystery: water backs up in my kitchen sink and would not flow (drain). No clogs. Why and what should I do? Please see images with captions for explanation : r/Plumbing Mystery: water backs up in my kitchen sink and would not flow (drain). No clogs. Why and what should I do? Please see images with captions for explanation : r/Plumbing](https://preview.redd.it/mystery-water-backs-up-in-my-kitchen-sink-and-would-not-v0-e833l4n9xr9b1.jpg?width=640&crop=smart&auto=webp&s=72411f024e414250f2e953628a85d098ea0071bf)
Mystery: water backs up in my kitchen sink and would not flow (drain). No clogs. Why and what should I do? Please see images with captions for explanation : r/Plumbing
![OC) the kitchen sink in our new house is backing up with wastewater from the bathroom after showering, flushing the toilet etc. : r/WTF OC) the kitchen sink in our new house is backing up with wastewater from the bathroom after showering, flushing the toilet etc. : r/WTF](https://i.redd.it/b3iiy7f4gny21.jpg)
OC) the kitchen sink in our new house is backing up with wastewater from the bathroom after showering, flushing the toilet etc. : r/WTF
![plumbing - Backed up kitchen sink drain that gets worse when I run garbage disposal - Home Improvement Stack Exchange plumbing - Backed up kitchen sink drain that gets worse when I run garbage disposal - Home Improvement Stack Exchange](https://i.stack.imgur.com/bCnnY.jpg)
plumbing - Backed up kitchen sink drain that gets worse when I run garbage disposal - Home Improvement Stack Exchange
![I came back to my sink today and it looks like this. Any ideas of what it could be that caused this? : r/mildlyinfuriating I came back to my sink today and it looks like this. Any ideas of what it could be that caused this? : r/mildlyinfuriating](https://i.redd.it/7wnvbgzxw6ib1.jpg)