Watts Premier 531411 RO-Pure Reverse Osmosis System with Chrome Faucet

Model# RO-Pure.  Item Number 531411

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The RO-Pure reverse osmosis filtration system was designed with you in mind, with a space saving, compact design that allows this system to fit under your sink with minimal space requirements, and with a 3 gallon storage tank you will have enough water for your daily use. Changing the filters is as easy as pushing a button! With the build in shut of valve when removing the filters there is no mess like traditional models. The filters snap out and are easily inserted. 

  • Reverse Osmosis Filtration System
  • 3-Gallon Storage Tank
  • Push Button Filter Replacement (Auto Water Shut Off)
  • Designer Chrome Air-Gap Faucet
  • 4 Stages of Filtration
  • Adapt-A-Valve Water Shut Off Valve
  • MFG Brand Premier
  • MFG Model# RO-Pure
  • MFG Part# 531411
  • Certified to Industry Standard, NSF/ANSI Standard 58
  • Certified by WQA

Reduction Claims Validated for this unit by WQA:

  • Barium
  • Cadmium
  • Copper
  • Cyst
  • Fluoride
  • Hexavalent Chromium
  • Lead
  • Pentavalent Arsenic <= 50 ppb reduction
  • Radium 226/228
  • Selenium
  • TDS
  • Trivalent Chromium
  • Turbidity
  • VOC (as chloroform)

* This product is intended for use only on water supplies that have been shown to be at or below the referenced concentration and valency of arsenic.

Filtration Stages

  • Filter Stage 1 - 5 Micron Sediment Filter 
                           - Reduces Dirt, Sand and Rust
  • Filter Stage 2 - 5 Micron Carbon Block Filter
                           - Reduces Chlorine, Objectionable Tastes and Odor.
  • Filter Stage 3 - 50 GPD (gallons per day) Membrane
                          - High production thin film composite membrane.
  • Filter Stage 4 - Carbon Post filter
                          - Enhance the water’s taste.


Replacement Filters:

Stage 1:  Changed Every 6 months
(1) Sediment Filter - RED (105311

Stage 2:  Changed Every 6 months
(1) Pre-Carbon Filter - YELLOW (105351

Stage 3:  Changed Every 2-5 years
(1) 50 GPD Membrane - GREEN (105331)

Stage 4:  Changed Every 12 months
(1) Post-Carbon Filter - BLUE (105341)

Filter Kits:

6 Month Filter Kit
• (1) Sediment Filter - RED
• (1) Pre-Carbon Filter - YELLOW 

Annual Filter Kit
• (2) Sediment Filters - RED
• (2) Pre-Carbon Filters - YELLOW
• (1) Post-Carbon Filter - BLUE

Please Note: RO Membranes Not Included in any kits

 To view these on the Filter Replacement Guide click here


Assembled Depth (in.)  4.0 in  Assembled Height (in.)  12 in 
Assembled Width (in.)  12.0 in  Automatic shutoff  Yes
Color/Finish  White Filter Housings  Faucet Included  Yes 
Filter change indicator  No Filtration method  Reverse Osmosis 
Fitting size (in.)  Fitting style  Quick connect 
Installation kit included  Yes  Item Package Type  Cardboard Container 
Manufacturer Warranty  3 year limited warranty  Maximum feed water pressure (psi)  100
Maximum feed water temperature (F)  100  Maximum filtered water flow (gallons per day.)  50 
Minimum feed water pressure (psi)  40  Minimum feed water temperature (F)  40 
NSF Listed  Yes  Number of stages  4
Product Depth (in.)  5.5  Product Height (in.)  12.0 in
Product Weight (lb.)  20 Product Width (in.) 
Water Filtration Technology Reverse Osmosis Water Filtration System Type  Under Sink 

 UPC Code



Note: Recommended hardness not to exceed 10 grains per gallon, or 170 ppm. System will operate with hardness over 10 grains but the membrane life may be shortened. Addition of a water softener may lengthen the membrane life.

The operating pressure in your home should be tested over a 24 hour period to attain the maximum pressure. If it is above 100 psi then a pressure regulator will be required.


Additional Information

Installation Instructions

Troubleshooting guide

Replacement Filters



For warranty information on this product, please call our Internet Customer Service Center at 1-800-752-5582


Shipping Options

Most orders ship within 3 business days

Weight: 17.0 lb

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