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Reverse Osmosis

Reverse Osmosis Overview

Reverse Osmosis (RO) works by filtering water through a semi-permeable membrane that won't allow most contaminents to pass through. They generally use a process called cross flow, which ensures that they are constantly cleaning themselves. The down-side to RO is that typically, it will only recover between 5% and 15% of the water entering the system, the rest is waste.

Reverse Osmosis System Suppliers


Name & WebsiteBasedSuitabilityOnline OrderingSecure Site
OsmonicsUSAWhole HouseNON/A
Aquatic Reef SystemsUSAVariousYESYES
Premier Water SystemsUSAVariousYESYES

For a comparison of the advantages and disadvantages of reverse osmosis against other water treatment methods, you may wish to look at the water treatment comparison page.

More information on Reverse Osmosis

I have tried to keep my site as concise as possible, so should you require further information on reverse osmosis, then you many find any of the following sites useful:

  • ->Research Paper from University of North Dakota - February 1992
  • ->Water Treatment Notes - Cornell Cooperative Extension, College of Human Ecology
  • ->A Guide from the Water Quality Association (pdf only)