Residential reverse osmosis systems first became commonplace in the early seventies. Originally developed for industrial use, they were soon marketed to the general public due to the sudden outcry for purified drinking water. From there the popularity of these water filtration systems grew dramatically. The residential reverse osmosis system uses a thin membrane with small pores that allow the water to pass through the filter. Under high pressure, water is pulled through this filter. The contaminants and minerals that are made up of larger molecules than the water are filtered out.

Advantages of Reverse Osmosis  compared to ionexchange systems

•          Low investment cost

•          No neutralization

•          No acid/caustic chemicals

•          Low demand of space

•          Easy installation and maintenance