I determined that it was leaking from the drain hose (bellows.) After doing some online research, I found a "fix it yourself" video, and appliancepartspros.com had the correct part in stock. I ordered the part, and it arrived 48 hours later. My husband and followed the steps in the video to replace the bellows, and the problem was solved! We spent a total of $16 on the part, and I'm sure that a service call would have been $200-$300.