Step 7 · Connect Drain Hose
Route the new drain hose from the dishwasher to the garbage disposal's inlet nipple. To prevent contaminated water from the sink from flowing back into the clean dishwasher, create a 'high loop' with the hose. Secure the drain hose as high as possible against the underside of the countertop or the back wall of the sink cabinet before it loops down to the disposal nipple. Use a strap or zip tie to hold it in place. Slide the spring clamp or hose clamp over the end of the hose, push the hose firmly onto the nipple, and move the clamp into position to secure it tightly.