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4 Stage Pentair GRO-75EN-DSN - 1:1 Super High Efficiency Residential Reverse Osmosis System With Satin Nickel Designer Faucet - Free Purity

4 Stage, 1:1 GRO-75EN-DSN With Super High Efficiency Pentair Gro RO System

Regular price $498.42 Sale

Please note:
Due to supply chain delays this product is on backorder. All orders will be shipped as soon as this product is back in stock. Lead time up to 14 days. We apologize for any inconvenience. 

Introducing the 4 Stage GRO-75EN- DSN AUTHENTIC PENTAIR
™ Encapsulated Membrane, Reverse Osmosis Water Purifying System with an amazing 1:1 waste ratio and satin nickel designer faucet.

100% U.S. manufactured and custom assembled, with John Guest Fittings. Easy to maintain, and the water quality assurance that only authentic Pentair
 products can guarantee.

What's Included:

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

  • 3 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 satin nickel designer faucet. 
  • DIY PARTS - Installation kit & instructions

The Pentair GRO-75EN-DSN, 75 GPD Reverse Osmosis semi-permeable Pentair™ membrane produced 1:1 ratio of water to waste. High quality drinking water is produced and conveniently stored in a sealed metal tank. The GR/O lead-free faucet easily delivers an abundant supply of clear, clean, and refreshing drinking water to you and your family.

If water waste is your concern with reverse osmosis technology and saving water is your goal, the Pentair GRO-75EN High Efficiency, 75 GPD reverse osmosis drinking water purifier is ideal. 


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 
  • Saves 4 x the water of standard RO systems
  • 4 Stage drinking water filtration system
  • TLC Thin layer composite membrane
  • 100% dry membrane maximizing shelf life


  • Authentic Encapsulated Membrane (Never touch the membrane)
  • 75 GPD - Gallons of Water Per Day
  • TDS Reduction of 93-98% of minerals, salts, contaminants
  • 50% High Recovery Rate - 1 to 1 Water Ratio!
  • John Guest® Quick Connect Fittings
  • 2 Year Warranty
  • Conserves Water
  • Innovative / Compact Space Saving Design


  • Non Air Gap Designer Faucet (Satin Nickel Designer Faucet)
  • 3/8" From Tank To Faucet
  • JG Angle Stop Valve
    • Carbon Block
    • Pre-Carbon
    • Carbon Block Post Filter 
    • Pentair Membrane


    Stage 1
    GE 5 Micron Particulate Filter (Sediment-PX05-97/8): Removes dirt, sediment, sand and other physical particles.

    Stage 2
    Omnipure Activated Carbon Filter (OMB934-XF): Reduces chemicals, such as chlorine, that may be in your water supply.

    Stage 3
    GRO-75EN Pentair™ High Recovery Membrane (4002575): Reduces 93%-98% of dissolved minerals, salts and other contaminates in your potable water supply.
    Stage 4
    Omnipure Activated Carbon Filter (OMB934-XF) Reduces chemicals, such as chlorine, that may be in your water supply.