Drinking Water Filters
Drinking water filters are considered point-of use filter systems. They filter the water at one specific location in the house as opposed to whole house filters or point-of-entry filter systems which filter water throughout the entire home. They are most often installed in the kitchen to provide clean, filtered water for drinking and cooking. Under-counter units are installed under the kitchen sink and supply filtered water to a dedicated faucet and sometimes to an ice maker or refrigerator water dispenser. One of the most effective drinking water filters is the reverse osmosis system which provides a very high level of filtration.
Reverse Osmosis Filter Systems
Reverse osmosis is recognized by experts as the best technology available to remove the widest spectrum of contaminants, which may be found in drinking water. Originally developed for desalinating sea water, reverse osmosis is most commonly used by water bottling plants and other industries that require ultra-filtered water.
Reverse osmosis works by passing water through a semi-permeable membrane under pressure. This process separates the pure water from the contaminants. The contaminants are then flushed down the drain leaving only pure, clean water.
A typical home reverse osmosis system contains one or more pre-filters, a membrane, and a post filter. Each filter including the membrane is called a stage. A 5 stage RO like the Soft and Pure reverse osmosis system provides the highest level of filtration available. It includes a sediment pre-filter to remove dust, particles, and rust. A carbon pre-filter to remove chlorine, chemicals, cloudiness, and discoloration. A second cabon pre-filter to remove residual contaminants. A spiral wound membrane for ultra-filtration. And a post filter for final polishing and removal of residual tastes and odors.