What is Reverse Osmosis?


Reverse Osmosis is a filtration method that employs two main ingredients, water pressure and a thin membrane (or filter). Water is passed into the filter through the membrane. Salts and contaminates are not allowed through the membrane but water molecules are. Pressure is necessary to ensure that the filtration process continues uninterrupted.

Often you hear of different stages in reverse osmosis systems. This simply refers to the number / type of filters used. Every system is different. Certain filters are used to extract certain contaminates. Some filters are specifically designed to target chlorine, while others look for dirt. At the heart of every system is the reverse osmosis membrane (filter) itself. This is usually the last stage in the filtration process and removes the very fine particles not collected previously.

Water quality is measured in parts per million (ppm). This measurement defines the amount of salt (contaminates) present in the water. Typically the ppm of water from city sources ranges from 200-400ppm. Water that has passed through a reverse osmosis system often measures at 2-5ppm! Imagine the difference in quality and taste that a reverse osmosis system can provide. Reverse Osmosis is typically used for drinking water only. It can be employed as a whole house solution, however the cost to run such a solution is usually prohibitive.


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