The problems that Dr Falkinham was concerned about had to do with commercial distilled water and the receptacles that hold the water once it has been through the distiller. The only thing going through the tubes in my distiller is steam and the bacteria has been boiled out and remains in the container. I wash the container after every use and boil citric acid in it when it looks dirty. I use receptacles that have never had any water in them except my distilled water. The only problem is that it takes hours to make one gallon. I keep it in the kitchen and start it up before breakfast so it works while I am elsewhere. I bought mine through Amazon several years ago and don't see it listed there now.