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Question DetailsAsked on 3/4/2017

hose under my sink is disconnected and leaking

I can see the hose dangling under the sink and where it is supposed to attach but it doesnt see to have anything that tightens it. I dont know how to attach it or what I need to do it.

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2 Answers


Assuming there is not water spewing out all over the place, I would guess this is the reinforced plastic dishwasher discharge hose - commonly but not always clear, but sometimes gray or white or whatever, about 3/4" ID and 1" outside diameter.

Sometimes plugs onto a barb like this leading directly into the drain lines - hose is first photo, connection fitting that goes into the drain lines is the second photo:

In other cases it hooks into the garbage disposal like this - the 6th photo showing part of the gray garbage disposal casing at the right and the drain line coming into it from the left -

In any case, there should have been a hose clamp (spring type or better yet the worm-gear screw type as in the second photo). If yours was hooked into the garbage disposal sometimes food builds up in there and blocks it and a loose clamp (or no clamp at all) can allow the hose to pop off as the dishwasher discharge pressures up - probably spilling at least some and sometimes a lot of dishwasher waste water under the sink in the process.

Another possibility - as they get quite old (especially if not changed out when new dishwasher is put in) the heavily ribbed "vacuum cleaner hose" appearing type can just crack through, leaving a stub end connected to the discharge fitting and a loose end lying around.

The other end of this hose connects (usually) to an airgap that looks like the following (can be mounted in the sink/countertop or underneath in some cases) - one hose comes from dishwasher (and sometimes also one from an under-sink water purifier unit) to the air gap, another leads out from the airgap to the garbage disposal or the discharge adapter fitting in the drain lines - so the loose end may have disconnected from that. The hoses should always have a hose clamp holding it snugly on (do NOT reef down on it - can break the fitting or cut through the hose) at each end.

You said you did not see anything that tightens it - may be the hose clamp slid down the hose or stayed on the barb when the hose popped off or may have fallen onto the cabinet floor - or maybe never had one and was just a press-fit that came loose or vibrated off. Worm gear screw-type hose clamps in various sizes at hardware, home improvement, plumbing, building supply stores - about a buck or so for spring-type, maybe a couple to few bucks for a single worm gear type.

Answered 3 years ago by LCD



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