What makes a kitchen sink fill up with water when you run the dishwasher? We got this fixed once before, and the problem is back. - Quora
High Loop is not preventing sink backflow into dishwasher. Separate DW trap below sink trap. | Terry Love Plumbing Advice & Remodel DIY & Professional Forum
![New Garbage Disposal and Dishwasher, leaking all over underneath (sink, appliance, installation) - House -remodeling, decorating, construction, energy use, kitchen, bathroom, bedroom, building, rooms - City-Data Forum New Garbage Disposal and Dishwasher, leaking all over underneath (sink, appliance, installation) - House -remodeling, decorating, construction, energy use, kitchen, bathroom, bedroom, building, rooms - City-Data Forum](https://www.city-data.com/forum/attachments/house/210534d1556809407-new-garbage-disposal-dishwasher-leaking-all-dishwasher-air-gap-required.jpg)