Our tap water is absolutely rubbish, dont know whats in it but it kills a distiller every single year by eating out the bottom of the inner stainless steel container. This one definitely seems to be a better quality than my previous 2 distillers. I really love that it has separate ON and OFF buttons you can start and stop the process anytime should you need to. My previous distillers only had an ON button, so once you started the process you could not stop until it was done. I also really love that you can remove the top from the glass jug and clean it very easily. I think this one is much better value for the money that any of my previous distillers so planning to buy a second one as a back up / extra. Really really love it, highly recommended.