Benefits and Limitations of Reverse Osmosis Water Treatment Systems
No water treatment system will remove 100% of every possible contaminant. The
variety of contaminants that could be present in your home’s water supply is
vast. A combination of methods works best for purifying, especially if you have
a water supply that is known to contain pollutants.
Reverse osmosis water
treatment systems work well with other products, such as UV purifiers.
Home reverse osmosis purifiers are available in either point of entry or point
of use models. A point of entry model is effective for cleaning the water in
every room in your home. Under sink water filters are used to purify the supply for drinking or
cooking. They can be used alone or with a whole house model for extra clean H2O.
Whether you use one or both of these will depend on the condition of your supply
and personal preference.
There are several benefits to reverse osmosis systems. They are capable of
removing most bacteria, viruses and pollution. Smaller microorganisms that pass
through other media are caught by the semi permeable membrane that is used in
the RO process. The best home treatment system uses a pre-filter to strain out
sediment and larger particles. The water is then put through the reverse osmosis
process, which cleans much smaller particles and pollutants. The last stage is a
carbon filter to remove any residual contaminants and purify the water even
better.
Reverse osmosis does have a few significant draw backs. The first is the time it
takes to purify the water. This process takes longer than other methods,
especially if you have a three stage RO system. They don’t have the ability to
completely remove all bacteria or viruses that are known to cause water borne
illness. The smallest microbes may slip past the membrane and into your glass.
If your home’s supply is heavily contaminated, consider a secondary treatment
system to use in conjunction with RO. The final drawback is the amount of
wastewater that is produced by these purification systems. Several gallons are
wasted to produce one gallon suitable for drinking.
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