Mist Filters seeks to bring you high-quality and affordable water filtration. At Mist Filters, our primary focus is getting the best product to our consumers. As well as the extensive testing we perform on our products, they are also certified by a third party (NSF/IAPMO R&T) so that the water in your cup is as pristine and good for you as you would hope it to be. WATER ONLY. NOTHING ELSE.