One of the most frequent reasons your dishwasher won’t drain well is due to a blockage in the drain tube. This drain line, or drain hose, moves water out of the dishwasher tub at the end of a cycle. If the drain line is obstructed, water can’t flow out of the tub. Reach the TML Service Experts pros at 208-488-4892 for plumbing services in Boise.