Travel fee Customer has a dishwasher that is not draining efficiently. Majority of water will drain, but there will be water buildup at base of draining system. Dishwasher is connected on its own drain that connects to main stack under the floor, visible from basement ceiling tile. Kitchen sink drain has good flow , water level inside dishwasher did not react to kitchen sink draining. Recommend she gets an appliance company to come check out dishwasher. Drain pipes are fine.