An Overview Of The Osmosis Water Filters

Written by bmlengel on May 3rd, 2009

Reverse osmosis water filters units are one of the more sophisticated and effective types of a water filtering system available. With such a system, the source water is moved through a process of multiple steps to purify and filter the water to be prepared for drinking. Osmosis units are becoming more popular and they are available as under-counter units or as whole house water filtering systems.

However, even though the reverse osmosis water filters are considered to be the premium way to go, it is helpful to know a bit more about these types of filters before making a purchase. The better you understand the process of reverse osmosis and how that process affects the water in your home, the more you will be equipped to make a wise and informed decision.

Reverse osmosis water filters take the source water that is available and runs it through various steps of filtering in the purification process which yields clean water that is good-tasting and that is clear of common contaminants. A reverse osmosis water filter system consists of a three-part process: pre-filtering, osmosis membrane passage and storage tank.

Pre-Filtration: In this initial stage of the purification process, the largest contaminating particulates and other impurities are removed. This prepares the water to follow through the rest of the reverse osmosis water filters process. In most systems, the pre-filter is a carbon filter or a activated carbon-based filter which must periodically be replaced in order to keep the filtering system in proper working order.

Reverse Osmosis Membrane: This is the second stage that reverse osmosis water filters utilize in the process to make pure and clean drinking water. At this stage, virtually all of the remaining impurities and contaminants are removed by a very fine membrane which the pre-filtered water passes through. Since this membrane is so fine, the water must be passed through it under pressure which ensures that the purified water is able to pass to the other side as clean water. The contaminants and any of the other impurities that were removed are then flushed out as waste water.

Holding Tank: The purified water is held in this tank until such time as it is used for drinking or cooking. This holding tank is an important part of the overall reverse osmosis water filters system because the complete process is rather time consuming and cannot keep up with normal flow demands of a busy kitchen faucet. By having several gallons of filtered drinking water stored, it is ready for use at any time and assures that the water is available upon demand.

Before deciding upon a reverse osmosis water filtering system for you home, it is a good idea to first test the quality of your water by using water test kits. Such a water testing kit will give you an analysis of the overall quality of your water and the types and concentrations of contaminants present. This information will be helpful to you in determining the best reverse osmosis water filter set up for your home.

It is also important to consider the availability of water and the efficiency of reverse osmosis water filters for your situation. The downside of these high-end filters is that only five to fifteen percent of the water pushed through the system will actually become purified water that is suitable for drinking and cooking. The rest of the water is flushed as waste water. If water in your municipality is very expensive, this might not be the right home water filter for you.

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