I have a reverse osmosis system and Caffeine and do hair make me feel less murdery shirt. First of all, yes they do wastewater, but the wastewater can easily be routed outside to water your landscaping. I live in So Calif, so my plants are always thirsty and can use the water. There isn’t anything in it like greywater to worry about. Second, it does make drinking water taste great, much better than tap water. Whatever you do, do not buy bottled water, especially in those little plastic bottles. That water tastes horrible, has plastic and other chemicals from the plastic bottles in it and is extremely costly.
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