A home water filtration system will give you peace of mind. Universal Water provides convenient online ordering for all of our filtered water solutions. Choose from whole house water filtration systems or under counter water filters. You've found the right place if you need a counter top water filter, refrigerator filter, shower filter or camping water filter.


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Counter Top Filters
Under Counter Filters
Refrigerator/Ice Maker Filters
Shower Filters
Whole House Filters
Well Filters
Camping Water Filters
Reverse Osmosis
Arsenic Water Filters
Fluoride Water Filters


Replacement Cartridges
Water Filter Faucets
In-Home Water Test Kits
2 Gallon Refrigerator Bottle
Drinking Water Bottles-32 oz.
Under Counter Water Chillers
Countertop Water Coolers/Heaters/Carbonators
Diverter Valves
Filter Housings
Wonder Shower
Built-in Coffee Makers
Coffee Servers
Water Softeners
Home Car Wash Spot Free Rinsing System


How Our Filters Work
Filter Cost Comparison
Technology Comparison
Protocol Test Results



The Biggest Innovation in Residential Reverse Osmosis:
Continuous Flow, With No Storage Tank!

GE Infrastructure Water and Process Technologies has achieved a revolutionary breakthrough in the water treatment industry. Out-of-the-box thinking and years of research have produced a totally new point-of-use drinking water system. The new Merlin RO System features continuous-flow water production of 0.5+ gallons per minute, so a storage tank is no longer required. RO water on demand!

The unit operates on line pressure, which eliminates the need for an electrical pump in most applications. The patented high-production, twin low-energy membranes purifies up to 720 gallons of water per day - an endless supply! Families will enjoy using pure RO water for drinking water, coffee, juices, soups and other cooking uses, ice, pets, rinsing vegetables, etc., never having to fear running out, even if entertaining company! This high capacity performance also creates new opportunities for light commercial applications, such as coffee shops, and beauty salons, at the price of a residential system. Big innovation, bigger opportunities.

The Merlin RO system wastes much less water than traditional tank-style systems. Since there is no storage tank, there is no negative back pressure exerted against the membrane. While tank-type systems may start out with a 20% recovery (1 gallon treated to 4 waste), as the storage tank fills, recovery efficiency drops to as low as 5% (1 gallon treated to 19 gallons waste) when the tank is near full. Since the Merlin has no storage tank, the membranes operated at the optimum recovery rate of 25% (1 to 3) at ALL TIMES! See pages 21 and 22 of the Merlin Application Guide (download below) for more details. 

  • Continuous flow - no storage tank necessary 
  • Up to 75% less waste than traditional tank-style reverse osmosis systems 
  • Uses line pressure only - >40 psi 
  • 1/2 gpm permeate rate @ 50 psi 
  • Requires no pump (most applications) or electricity 
  • Compact design - fits easily under sink: 17.05" height X 20.34" length X 9.68" depth 
  • ANSI NSF 58 validated against arsenic, barium, cadmium, lead, fluoride, and more (see Performance Data sheet) 
  • Consistent TDS rejection and membrane efficiency 
  • High recovery system 
  • Multiple dispensing locations off one system 
  • High durability Noryl and polypropylene construction provide years of dependable service 
  • Engineered for the fewest number of connection points - less chance of leaks 
  • System's support leg also serves as a handy sump wrench 
  • Complete kit - faucet, cold water line connection tee, drain connection 
  • Can be easily installed by do-it-yourself person - quick connect fittings make it a snap! 
  • Warranted for 3 years in residential applications, 1 year in commercial (excluding replaceable elements) 

Merlin On-Demand RO System (includes Mur-Lok cold water connector, a $20 value)
Unfortunately this system has been discontinued by the manufacturer.

Replacement cartridges and parts are still available.

Replacement Carbon Block Prefilter (replace approx. once per year)

$54.99  Qty:

Replacement Carbon Post Filter (replace approx. once per year)

$49.99  Qty:

Replacement Membrane - two (2) required (replace approx. every three years)

$154.99 each  Qty:

Optional high-purity flush kit  (see pages 23 - 28 of Application Guide)  

$119.99 each Qty:  

Optional booster pump for inlet pressures less than 45 psi. 110V  

$429.99 each        Qty:


Download the Merlin Brochure (435 KB)

Download the Merlin Specification Sheet (403 KB)

Download the Merlin Installation Manual (1.3 MB)

Download the Merlin Application Guide (1.06 MB)

Download the Merlin Performance Data (193 KB)



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Counter Top Filters Water Information How our water filters work
Under Counter Filters Fluoride in drinking water Water Filter Comparison
Refrigerator Filter Water Treatment Filter Cost Comparison
Shower Filters Cysts in drinking water Proper Hydration
Whole House Filters Giardia Safe Drinking Water
Replacement Items Lead in drinking water NSF-53 Protocol test results
Portable Water Filters Chlorine in drinking water Painting Supplies
Water Softeners Chlorination By-Products Water Chillers
Faucet Water Filters Pesticides in drinking water Fluoride Water Filters
Water Filters Cryptosporidium Home Water Filtration System