Reverse Osmosis: Process and Benefits

Although drinking water in the United States is generally clean and safe, some regions require additional water filtration systems. Take reverse osmosis system, for instance, which entail passing water through a semi-permeable membrane. If performed in large scale, this method not only increases the potable water supply but also helps prevent certain common water-borne diseases.

Reverse osmosis is an effective way to rid water of harmful pathogens. Yet how does it work? In nature, a liquid with a higher solute concentration passes through a permeable membrane towards a liquid with a lower solute concentration. Permeation ceases once the two liquids achieve equilibrium or the same amount of solute. This is called osmosis. Reversing the process will give you reverse osmosis.

Filters are the Key

To achieve effective water purification, a new reverse osmosis filter needs to be installed in the system first. Many variants are available, such as those made with activated carbon (for the removal of suspended particles and volatile organic compounds) or zeolite (to ensure sediment reduction), just to name a few.

Point-of-Use or Point-of-Entry

Homeowners can choose where to install reverse osmosis filtration systems. Point-of-entry installation places the system after the water meter, which enables the entire water supply to be purified. A point-of-use system, on the other hand, purifies water as it comes out of the kitchen or bathroom tap so that water is treated only as needed instead of on a wholesale basis.


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