PuROTwist 4000 RO System Review

Purotwist reverse osmosis system review

The newly upgraded PuROTwist Reverse Osmosis system features a high-efficiency 75 GPD membrane with a 50% recovery rate, achieving a 1:1 waste-water ratio.

This eco-friendly RO system delivers top-quality performance and high capacity output with an automatic shut-off. The Twist Tap (Omnipure Q-Series) filters allow for easy maintenance—simply twist off the old filter and twist on the new one, with no tools or mess.

The 4-stage, point-of-use system treats up to 75 gallons per day and includes a designer chrome air gap faucet, convertible to a non-air gap faucet. It conforms to ANSI/NSF standards 58 for performance claims as verified and sustained by test data.

Viqua VIQUA IHS22-D4 Integrated 12 GPM UV System with Sediment and Carbon with Lead Reduction Filters IHS22-D4-

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Pros of the PuROTwist RO System
User Friendly: Filters are easy to replace with twist-off, quick-change filter design.
Conserves Water: RO recovery rate of 1:1 rather than the typical 4:1 waste water ratio.
ANSI/NSF Standards: Conforms to ANSI/NSF standards 58 for performance claims as verified and sustained by test data.
Designer Faucet: System comes with a designer chrome faucet and and a conversion kit for non-air gap faucet.
Economical Replacements: The availability of cost-effective replacement filters can help to keep ongoing maintenance costs low.
Outstanding Taste: Removes impurities such as sediment, lead, VOCs, chlorine and more for enhanced flavor of drinking water.

Cons of the PuROTwist RO System
Fewer Filtration Stages: The system includes four stages of filtration instead of five stages.
Required Maintenance: Filter housings should be cleaned at time of filter changes.
Flow Rate: Water flows through 3/8" tubing to the faucet.

Quick Look at the PuROTwist 4000 RO System

The PuROTwist under-sink RO system is a popular, high-performing system:

      1. The PuROTwist 4000 RO system features "quick-connect" filters to make filter changes fast and easy. No tools, buckets or mess required.

      2. With four stages of filtration, the PuROTwist can significantly enhance the taste, odor, and overall quality of your drinking water by removing up to 99% of impurities and pollutants including Barium, Cadmium, Chlorine, Pesticides, Chromium VI, Copper, Fluoride, Lead, Mercury, Nitrate, Radium, Selenium, TDS (total dissolved solids)

      3. The PuROTwist (PT400075) is an eco-friendly water filter as it conserves water with a 1:1 recovery rate rather than the typical 4:1 water waste ratio.

      4. This point-of-use reverse osmosis system is manufactured in the U.S.A.

      5. The PuROTwist 4000 has an automatic shut-off feature which signals the system to stop making water until more is needed.

      6. High-capacity filtration produces 75 gallons of water per day, which means you'll have plenty of drinking water for your family or cooking needs.

Child fills cup with filtered water

Benefits of PuROTwist RO Filtration System

Easy to install and maintain with twist-on, twist-off filter replacements
Clean, filtered water convenient at kitchen RO faucet
Better-tasting soups, sauces and meals
Wastes less water with a 1:1 water recovery ratio rather than typical 4:1 ratio
Delicious, fresh drinking water
Saves money over buying bottled water
Comes with designer chrome faucet
Clear, harder ice cubes

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PuROTwist 4000 RO System

PuROTwist 4000 RO water filter system offers the highest of quality and performance standards. In addition, the system conserves water with a 1:1 recovery rate--a big improvement from the typical 4:1 waste water ratio of other RO systems.

The high-capacity (75 GPD) reverse osmosis system features quick-connect filters that make it easy to replace filters. The system's automatic shut-off feature signals the RO unit to stop making water until more is needed.


PuROTwist 4000 RO System FAQs

Which replacement filters do I need for the PuROTwist 4000 RO system?

The PuROTwist 4000 RO system takes Ominipure Q-series filters. Their twist on/twist off style makes filter replacement easy. While the system's three filters should be replaced every 6-12 months, depending on water quality and household usage, the RO membrane only needs to be replaced every two years. Our replacement parts page for the PuROTwist 4000 includes the filter kit with just the 3 filters for annual replacement, or the complete filter kit that includes the RO membrane, since the membrane only needs replacement every 2 years.


What Contaminants does the PuROTwist 4000 Remove?

Your PuROTwist 4000 reverse osmosis filters and membrane can remove common pollutants from water including lead, pesticides, sulfates, fluoride, nitrates, chlorine, pharmaceuticals, Arsenic V, PFOS, and much more. The RO system's carbon filter will also remove chloramines and chlorine. Learn more about what contaminants can be removed with reverse osmosis filtration.

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  • Proven, High-Quality System
  • Compact, Space-Saving Design
  • Eco-Friendly System Conserves Water
  • Designer Chrome Faucet
  • Standard Chrome Faucet
  • Designer Chrome Faucet
  • High-Flow 3/8" Tubing to Faucet
  • High-Flow 3/8" Tubing to Faucet
  • High-Flow 3/8" Tubing to Faucet
  • 4-Stages of Filtration
  • 4-Stages of Filtration
  • 4-Stages of Filtration
  • Compact 3.2 Gallon Storage Tank
  • Standard 4.4 Gallon Storage Tank
  • Standard 4.4 Gallon Storage Tank
  • Airgap and Non-Airgap Faucet Connection
  • Airgap Faucet Connection
  • Non-Airgap Faucet Connection
  • 50 Gallons Per Day
  • 50 Gallons Per Day
  • 75 Gallons Per Day
  • Made in USA
  • Designed in USA, Made in China
  • Made in USA
  • Free Shipping
  • Free Shipping
  • Free Shipping

Explore Other System Types

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