Carol, Now that you have thought of everything, what about this is it a new washer,? if so, then I think some where in your system you must have white grease which is in contact with your water. if its an old machine then it could be the same problem, there are no moving parts in your water softner, so it must be in your machine, have a look at all the moving parts that are in contact with the water. Let us know how you get on, others may have this problem. John 2000.