Pure Water 4-Stage Zero Waste Reverse Osmosis Under Sink System

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Watts PWRO4ZRO Pure Water 4-Stage Zero Waste Reverse Osmosis Under Sink System

Item #: PWRO4ZRO by Watts Water Technologies, Inc

UPC #: 098268561333

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$1,162.37 /each

SAVE UP TO 116.24

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Lead reduction (%)




Number of Stages


Product Width (in.)


Removes Chlorine


Certifications and Listings

ANSI Certified, NSF Certified

Fitting size (in.)


Filtration Method

Carbon Block

Product Height (in.)


Pack Size


Filtration Type

Reverse Osmosis System

Faucet Included


Product Depth (in.)



1 Year

Removes Lead


Manufacturer Warranty

1 Year



This 4 stage zero waste reverse osmosis system is one hundred percent efficient. The patented zero waste reverse osmosis system is the first ever that does not waste water. The reverse osmosis uses a semi permeable membrane, by applying pressure across the membrane, it concentrates contaminants like a strainer on one side and produces crystal clear water on the other side. This reverse osmosis systems produce both clean drinking water and waste water that is flushed from the system. Compared to all the other systems that can flush as much as 4 or more gallons for every 1 gallon of drinking water produced, the ZRO-4 is the world™s most efficient system. This system provides the high quality of water to any home at a fraction of the cost of bottled water. This system is tested and certified by NSF international against NSF and ANSI standard 58 for the reduction of the claims specified on the performance data sheet. IAPMO certified.

  • 50 GPD reverse osmosis membrane
  • 3 Gal. reverse osmosis storage tank
  • High flow non air gap designed faucet
  • NSF certified standard 58, IAPMO certified, patented zero waste design

This product can expose you to chemicals including lead which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.