A couple months ago I bought a pur sink filter along with a TDS meter that detects ppm of minerals in the water. I don’t really understand the complexity of RO but turns out my tap water had less minerals than when it went though a filter. The water tastes better with pur but the results on the meter say otherwise. Is RO just adding additional minerals to make it taste better? I don’t have a filter right now but am debating getting a Zero filter which removes every mineral. It’s true that some minerals are good for us, but it we also get minerals from food. This is not just a question for my cats diet but for just the water quality. I felt mislead by RO filters and just stopped buying them altogether.