Categories and Types of Water Filter
Point of Use (POU)
- ceramic pot filtration
- cloth filtration
- natural or chemical coagulation
- sand filtration
- solar disinfection(SODIS)
Home water filters for kitchen sinks are classified into three main types, many of them use carbon filters to attenuate odors and sediments from the incoming tap water:
- Water pitchers and dispensers
containers like pitchers and dispensers store water in the refrigerator for later use
- Water faucet models
faucets with carbon filters are mounted on the kitchen faucet with a switch for ease of accessing both filtered and unfiltered water
- Under sink models
the model which offers the greatest filtering capabilities which could be installed under the kitchen sink to stay out of view
Most of the reverse osmosis water filter system belong to under sink model, while some of them could be connected to the kitchen faucet. They are also the most effective but expensive point of use household water filtering solutions by and large.
To choose a point of use water filter please read the guidelines.
Point of Entry (POE)
As the point of use treatment deals with a particular faucet of the house, the point of entry, as its name provides, works on the supply of cleaner water for the whole house, which includes kitchen and toilet faucets, showers, even on laundries and toilet flushes. The point of entry system is commonly known as whole house water filter. They are installed outside or in the basement. Depending on the quality and capacity, it ranges from $300 to $1000, generally more expensive than point of use water filters. Apart from the quality of drinking water, if you are also concerned with the quality of bathing water, point of entry treatments are most likely to be your solution. This site focuses on point of use water filters, but you could find more information on whole house water filter at whole-house-water-filter.com.