Loved this garbage disposal when brand new.  It was so quite, unlike the older one that it replaced.  I have had it for about 3 months now and it does seem to prevent the water from going down the drain at times.  My older one did this too.  I have to turn it on to get the water to completely drain at times.  And I am not one to put too much down the drain as far as food particles.  It's not the biggest nuisance but I was hoping that I wouldn't have to do this with a new disposal.  It is still pretty quite though which is a good thing.