FreshPoint 3-Stage Under Counter Reverse Osmosis System

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FreshPoint 3-Stage Under Counter Reverse Osmosis System

The Pentair FreshPoint GRO-350 Reverse Osmosis (RO) System is designed to transform ordinary tap water into clearer, more refreshing water with the turn of your tap by reducing a broad range of impurities found in your home water. That means less lead, arsenic, fluoride, and less foul tastes and odors from chlorine – just to name a few. And, the Pentair FreshPoint GRO produces less water waste than other reverse osmosis systems in the market.
  • Reduces your environmental impact by producing less water waste than competing systems
  • Two models to choose from to meet the demands of your unique home water profile
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FreshPoint 3-Stage Under Counter Reverse Osmosis System
FreshPoint 3-Stage Under Counter Reverse Osmosis System
SKU#: Product2G_855387246564


Benefits of a FreshPoint Drinking Water Filter

When you can enjoy refreshing, high quality water right from your home, there’s no need to waste money on expensive plastic bottled water or bulky pitchers taking up too much space in the refrigerator. The Pentair FreshPoint GRO-350 Reverse Osmosis System can provide excellent water in just 3 simple steps. This system features patented Diamond Flow technology, which combines two filtration technologies into one to give you cleaner, high quality, chug-worthy water. And, with Green RO technology, the FreshPoint GRO-350 produces less water waste, leaving you – and your water – with a clear conscience. Other features include:

  • Comes ready to install with dedicated side faucet
  • Storage tank gives you ready-to-drink water on-demand
  • High-efficiency membrane technology delivers up to 50 gallons per day
  • Integrated booster pump for low water pressure applications increases tank fill rate (FreshPoint GRO-350BP model only)
  • Click-in installation is easy and saves you time
  • Color-coded cartridges make filter change-outs simple and hassle-free
  • Less water waste than other RO systems in the market
  • Uses no harmful chemical additives to give you a higher quality of water
  • Double o-ring design for optimal cartridge sealing and leak protection

Better Drinking Water On-Demand


No Plastic Bottle Waste


Hassle-Free Installation & Maintenance


Peace of Mind

How it works

3 stage system

Chlorine Taste & Odor Reduction

Tap water passes through Pentair’s patented Diamond Flow technology – a combination of two technologies in one: a carbon block designed to reduce taste and odors, and a poly spun shell wrapped around the carbon block to reduce sediment and help protect the life of the carbon block.

Contaminant and Impurities Reduction

Water then moves through the reverse osmosis membrane which reduces a broader range of contaminants and impurities found in your home water. The membrane separates the water containing contaminants and sends it down the drain while pushing the more pure water in to the next stage. Pentair’s patented Green RO (GRO) membrane reduces the amount of water waste compared to standard members in the market.

Better Tasting Water

Water then passes through the final stage, a granular activated carbon (GAC) filter, which reduces any remaining contaminants while “polishing” the water to give you better tasting water. This water is then stored in a 3.2 gallon storage tank that hold the water until you are ready for clearer, better tasting water.

Compare Reverse Osmosis Systems

  FreshPoint 3-Stage RO System
FreshPoint 4-Stage RO System
FreshPoint 5-Stage RO System
Arsenic X X X
Dissolved Solids
Chlorine Taste & Odor X X X
  X X
  X X
Volatile Organic Chemicals
Dedicated Side Faucet Included
Cartridge & TDS Timers
NSF 42 & 58 Certified
NSF 53 Certified
  X X
Booster Pump Included (select models only)
X X  
Storage Tank Included
Explore Products This Product FreshPoint 4-Stage RO System FreshPoint 5-Stage RO System



Item #ImageStagesSubstance Reductions ClaimsTreatment TechnologyFaucet FinishEstimated Life (months)Monitor/PumpInstallation LocationSide Faucet Required
161113 3 Chlorine Taste & Odor|Lead|Arsenic V|Hexavalent Chromium|Barium|Radium 226/228|Selenium|Copper|Trivalent Chromium|Cryptosporidium|Giardia|Fluoride|Turbidity|Cysts|Cadmium|Total Dissolved Solids Reverse Osmosis|Membrane Chrome 6 to 12 Filter Cartridges 18 Membrane Includes Booster Pump Undersink Yes

What’s Included

  • Filter System with Cartridge
  • Side Faucet
  • Storage Tank
  • Installation Kit
  • Owner’s Manual / Installation Guide

Installation Information

Recommended Installation: DIY + or Professional Installation

  • Choose a mounting location suitable to support the full weight of the system when operating
  • Install vertically with the cartridge hanging down
  • System may be installed with cartridge flush to the baseboard if desired as the mechanical assist level pushes cartridges straight out

Operation Tips

  • Replace pre/post filters every year
  • Replace RO membrane every 18 months
  • Place replacement cartridges in proper sequence utilizing color-coded shapes
  • System designed with integrated check valves so cold water line does not need to be shut-off to perform cartridge change-outs

Be Confident With A Comprehensive Under Counter Filtration System

5 stage RO system

The Pentair FreshPoint 5-Stage Reverse Osmosis System is our most comprehensive under counter filtration system, using 5 unique steps to reduce a broad range of contaminants and impurities found in your home water, and polishes it off to give you better tasting water.

  • Effectively reduces up to 99.99% of E.coli, Cryptosporidium, and Giardia
  • Double lamp life of standard UV systems with revolutionary lamp technology

Water Education Center

Lead is harmful even in small doses, as the EPA attests. The EPA has set the maximum contaminant level goal for lead in drinking water at zero. Learn about how lead gets into your water and which products are recommended to reduce its effects.

Learn About Lead

Beyond taste and odor, the volatile chemical nature of chlorine means it can react and form potentially harmful byproducts. But, how much chlorine is ‘safe’?

Learn About Chlorine

The benefits of reverse osmosis water systems can transform your drinking water, but exactly is reverse osmosis and how does it work?

Learn About RO

Learn more about common water problems and how to tackle them in our Water Education Center.
Applies to select products purchased on or

*NSF/ANSI Standard 53 certified to reduce cysts such as Cryptosporidium and Giardia by mechanical means

Contaminants reduced when used as instructed. For details, see ‘Certifications’ tab.

EPA EST. NO. 082989-CHN-001
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