5-Stage Tank Reverse Osmosis

5-Stage Tank Reverse Osmosis is the classic under-sink RO setup: five stages of filtration working in sequence, a compact storage tank that holds your treated water ready to pour, and a dedicated drinking-water faucet mounted at your sink. It's the proven design that's been delivering clean, great-tasting water to kitchens for decades.

If you want the reliability of reverse osmosis without the tankless price of our AlkaPro, this is the system. It's simpler, easier to service, and uses widely available replacement filters — a dependable choice for households that want great drinking water at a lower price point.