One of the most common reasons your dishwasher isn’t draining well is due to a obstruction in the drain tube. This drain line, or drain hose, sends water out of the dishwasher tub after a cycle ends. If the drain line is obstructed, water isn’t able to flow out of the tub. Reach the Strogen's Service Experts pros at 603-923-4570 for plumbing services in Rochester.