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RO Super High Efficiency Undersink Water Purifier - The 1:1 Water Saver - Free Purity

RO Super High Efficiency Under Sink Water Purifier - The 1:1 Water Saver

Regular price $518.00 Sale

Please note:
Estimated lead time 14 days. 

Safe Water. Safe Environment. Safe You

Introducing the 5 Stage GRO-75EN AUTHENTIC PENTAIR Encapsulated Membrane, Reverse Osmosis Water Purifying System with an amazing 1:1 waste ratio with chrome designer faucet and option to include a 8800 Pump.

Manufactured and assembled in US with John Guest Fittings. Easy to change filters, with water quality assurance that only authentic Pentair products can guarantee.

Each unit comes with everything you need for a fast DIY install and instant use.

  • SET OF FILTERS - Ready to use after installation. 
  • WATER TANK - Certified 3.2 Gallon lead-free pressure tank. FDA approved. 
  • RO FAUCET - NSF non-air gap, lead-free chrome designer faucet. 
  • DIY PARTS - Installation kit & instructions

The GRO-75EN-SSTG high efficiency REVERSE OSMOSIS semi-permeable Pentair™ membrane rinses contaminants to the drain with less waste water. High quality drinking water is produced and conveniently stored in a sealed tank. The GR/O lead-free faucet easily delivers an abundant supply of clear, clean, and refreshing drinking water.

If water waste is a concern with reverse osmosis technology, this system is ideal water saver.

Reverse Osmosis is the most effective and economical way to provide your family with high quality drinking water. Reverse Osmosis is the process by which water molecules are forced by your household water pressure through a semi-permeable membrane. Contaminants are rinsed to the drain while your high quality drinking water is stored in the holding tank ready for drinking on demand.


  • High rejection stability at high input TDS 
  • 5 Stage drinking water filtration system
  • TLC Thin Layer Composite Membrane
  • 100% Dry membrane maximizing shelf life


  • Authentic Encapsulated Membrane ( Never touch a membrane)
  • 75 GPD - Gallons Per Day
  • Optional 8800 Pump - Flow low pressure tap water
  • TDS Reduction of 93-98% of minerals, salts, contaminants
  • 50% High Recovery Rate - 1 to 1 Water Ratio!
  • Saves 4 x the water of conventional RO systems
  • John Guest® Quick Connect FIttings
  • 2 Year Warranty
  • Conserves Water
  • Innovative / Compact Space Saving Design
  • Saves Money


  • Non Air Gap (with chrome designer faucet)
  • Optional 8800 Pump
  • 3/8" From Tank To Faucet
  • JG Angle Stop Valve
    • Carbon Block
    • Pre-Carbon
    • Carbon Block Post Filter 
    • Pentair Membrane


  • Maximum Pressure: 125 PSI (6.90 bar)
  • Maximum Temperature: 120°F (49°C)
  •  pH: 4-11
  • Free Chlorine: 0.1 ppm


    Stage 1
    GE 5 Micron Particulate Filter (Sediment): Removes dirt, sediment, sand and other physical particles.

    Stage 2
    Omnipure Activated Carbon Filter: Reduces chemicals, such as chlorine, that may be in your water supply.

    Stage 3
    Omnipure Activated Carbon Filter: Reduces chemicals, such as chlorine, that may be in your water supply.

    Stage 4
    GRO-75EN SSTG Pump (Optional) Pentair™ High Recovery Membrane: Reduces 93%-98% of dissolved minerals, salts and other contaminates in your potable water supply.

    Stage 5
    Post Carbon Filter: A polishing process that removes tastes and odors out of the water.

    Stage 6
    Remineralizing Cartridge: 
    Worried that an RO purifier will make your water too pure? No problem! This is not necessary but you may add minerals back to your pure, healthy water by adding a stage 6 to this system, remineralizing cartridge that infuses your water with potassium, calcium and magnesium. This cartridge should last 6 months depending on the usage.
    Here is the best remineralizing filter for GRO-75EN-SSTG-Pump

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