This product is probably the best or one of the best performing water filtration systems I have come across. Reverse osmosis not only finely filters coarse impurities, but also bacteria. Ut seems expensive like 4 filters but over time the price levels out and it's worth it. I ordered a blue reverse osmosis filter (once every 2 years) because I had already replaced 2 6 month and 1 yearly replacement filters.
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