The DIAMOND R/O System™

Premium Point-Of-Use Reverse Osmosis Filtration

Provide your home and family with pure, clean, healthy drinking water.

Your drinking water can be cleaner, smoother, and free of odors, chemicals, and chlorine. High-Efficeincy Reverse Osmosis with Pentair’s GRO Membrane advanced technology and OmniPures filter cartridges.
  • Purified
  • Clean & Delicious
  • 4-Stage Purification System
  • Reduces up to 99% of Water Contaminants
  • Easy Installation - Fits under kitchen sink
  • Quick and Sanitary Filter Changes
  • Highest Production Efficeincy Ratio in the Industry (1:1)
    (1 gallon production to 1 gallon of waste)

Advanced Technology, Quality Components, and Assured Assembly

The Diamond R/O Reverse Osmosis (RO) Drinking Water System reduces Lead, Chlorine taste & odor, dissolved minerals & salts, Copper, Hexavalent & Trivalent Chromium, Barium, Cadmium, Radium 226/228, Selenium, Fluoride, Nitrate/Nitrite, and cysts such as Cryptosporidium and Giardia by mechanical means.

The carbon/sediment pre-filter reduces the particles and chlorine taste and odor to prolong life of RO membrane. The RO membrane separates water molecules from dissolved salts and minerals. Up to 96% of these total dissolved solids (TDS) are rejected and sent down the drain. The RO filtered water is sent to the storage tank until you need it. When you turn on the lead-free drinking water faucet, the filtered water from the storage tank is sent through a carbon polishing filter which provides final taste and odor filtration before the water reaches your glass. Cleaner, fresher water whenever you want it!

Pentair GRO Membranes

High-Recovery Encapsulated Element Pentair’s GRO integrates a 100% dry membrane to help maximize its lifespan and provide enhanced performance to the end user. The GRO boasts a 50% recovery rate while maintaining a retrofit-able design for easy integration. Pentair GRO Membranes use an industry leading state-of-the-art TLC (Thin Layer Composite) membrane providing high quality water for a broad range of water chemistries. Each membrane is required to meet Pentair’s strict performance requirements prior to shipment.


Compared with the competition, you’ll see the benefits add up with Diamond R/O filtered water.

All of our systems come with a 10-year Limited Warranty.

OmniPure L-Series Filters

High-Efficiency Stage Filter Cartridges

STAGE 1 (Pre R/O)

Sediment Reduction Media

Filtration of large particles

STAGE 2 (Pre R/O)

Carbon Block Media

Chlorine/Chemical Filtration as small as 5 microns

STAGE 3 - Reverse Osmosis

75 Gallon ????

High-Production GRO Membrane

STAGE 4 (Post R/O)

Granular Activated Carbon Polishing Filter

Upper Faucet comes in different finishes & styles to match your fixtures and decor.