Reverse Osmosis systems filters out all the essential minerals your body needs. It is also a resource intensive process, wasting a lot of water, and takes a lot of take to complete a tank full. The RO membrane filter is also the most expensive filter of the bunch, at $55 alone. The complete system costed about $130 at Costco.

I will show you how to get rid of the RO filter, and convert this Costco water filter system into a 3 filter system. The filter we will keep are the Sediment, Carbon, and Post-Carbon filter. Your water will come out filtered and clean, but not over filtered and mineral deficient.