We have all seen the adds on TV for the dishwasher soaps that promise to leave your crystal wine glasses just as spotless---as a Dalmatian is spotted.
On a recent inspection I found a dishwasher drain installation that is guaranteed to keep that crystal even MORE spotted than a Dalmatian. Take a look at the picture below and you should be able to see how when water drains from the left basin it can run right INTO the drain from the dishwasher.
Most people like to think of their dishwasher as a relatively sanitary environment and risking dirty water flowing back into the washer is not considered a good idea. Those of you grossed out by the idea of a Gum Wall might even be a little disgusted by this idea as well. The best spot-free detergents in the world are not going to help with this insult. This dishwasher drain should be connected to a proper countertop air-gap device or to a Johnson-T air gap device ----and then to a proper drain location.
Remember that chicken or fish you gutted in the sink last week?
Or when the kids gave fluffy a bath?
Hopefully nobody washed out diapers in the sink---oh yeah, I forgot---nobody washes diapers at home any more.
Yes even that stuff---or worse---might find its way into the dishwasher. The kitchen sink gets used for all kinds of things---even bad contests.
Makes you want to go lick the Gum Wall doesn't it?
Charles Buell, Seattle Home Inspector
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WA State, Home Inspector Advisory Licensing Board