There, it's fixed!

[Richard Moore]

This threw me yesterday.

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'76 split entry with a 1" clear plastic tubing off of a PVC elbow exiting the wall between the kitchen and master bathroom about 4' above floor level. The tubing just terminates onto the patio below. I originally thought condensate line of some sort although it was nowhere near anything that would produce condensate.

Turns out that it used to be the external air-gap for the dishwasher. I can only guess that at some point the regular drain piping got blocked, water started spewing out the air-gap, and so they modified this to drain the dishwasher onto the patio rather than clearing the clog.

It wasn't doing that during the inspection so maybe the clog cleared itself at some point? Never a dull day!