APEC Water RO-PH90 Water Filtration System

The final stage of this system adds high-purity, US-made calcium carbonate to the water. This process naturally raises the pH level, resulting in alkaline, mineral-rich water that many users find tastes smoother and more refreshing than standard reverse osmosis water.

The RO-PH90 is designed for standard under-sink installation, but it does require some basic plumbing knowledge and tools. Because it is a 6-stage system, you will need to ensure you have adequate space for the filter housing and the storage tank.

While a standard reverse osmosis system strips water of almost everything, the RO-PH90 includes an additional 6th stage specifically for re-mineralization. This restores beneficial calcium minerals and balances the pH, whereas standard systems often produce slightly acidic water.

This system uses standard-sized, high-quality filter cartridges. While you can technically find generic replacements, using APEC's US-made filters is recommended to maintain the WQA Gold Seal certification and ensure the contaminant rejection rates remain consistent.

No, the RO-PH90 operates entirely on water pressure. It does not require an electrical outlet, which makes installation simpler and ensures you have access to filtered water even during a power outage.

The pre-filters typically need to be replaced every 6 to 12 months, depending on your local water quality and usage volume. The membrane and the pH+ mineral cartridge generally last longer, usually between 2 to 3 years.