Our water softener, which we never used anyway, malfunctioned. A leak resulted, flooded the lower level, making the carpets quite wet. BD came out next day, we had turned off water to stop the leak. The had to remove the old WS unit, reroute the tubing, and while the carpet may well have to be replaced--it could have a been a lot worse. WE MIGHT NOT HAVE BEEN HOME WHEN THIS LEAK HAPPENED. Thanks BD.