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" ... First, the water is filtered through a combination of conventional microbiological treatment and an ultrafiltration membrane—a Membrane Biological Reactor (MBR) for breaking down organic substances plus separating bacteria, microplastics and parasites. Second, the water goes through a very tight reverse osmosis membrane, which removes almost 100 % of all chemical substances. As a back up, there’s an activated carbon filter to remove priority organic substances, such as pharmaceutical residues and PFAS (Perfluoroalkyl Sultanate) that could become toxic at high concentrations. Third, and as the final safety barrier, the water is exposed to a bacteria killing ultraviolet (UV) light on the off chance that any bacteria remains. ... "