Dirty water in Whirlpool dishwasher WDT780SAEM1

[Sam0415]

Model Number

WDT780SAEM1

Brand

Whirlpool

Age

1-5 years

I have a 5-year-old Whirlpool dishwasher that seems to be always dirty. I have scrubbed every part of it and run it quite frequently with just vinegar. And it always stinks. I recently noticed when I was running it completely empty with a cup turned right side up with white vinegar in it, the cup kept filling with dirty water on the top rack. Has anyone seen this happen? Could my water supply to my dishwasher be contaminated?

 

[Jake]

It sounds like dirty kitchen sink water is backflowing into your dishwasher, do you have a high loop in your drain hose under the sink before it exits into your garbage disposal or sink plumbing?

Check your drain hose for a high loop in it before it connects to the garbage disposal or sink plumbing.

You can see how it has to loop in Fig 1, Fig 1a, Fig 2 here:

Jake