A whole house water filtration system starts at the point where water enters the household from either the city municipal water or a private well. The filtered water than travels to all the water dispensing locations in a household, including:
The purpose of a whole house water filtration system is to remove harmful or troublesome contaminants such as salt, sand, chlorine and other chemicals, and water hardness minerals. The filters are usually located at the junction where water to a home separates from water to the yard or garden.
If a person wants to have yard and garden water purified as well, he or she will need to consult with a professional to make sure this is done correctly.
The process of selecting a whole house water filtration system begins with figuring out which type of filter will be needed. If the water coming into the household is from city municipal systems, a filter that will remove chlorine and other chemical, particulates and hardness minerals will be needed.
Private Wells will have similar concerns with the possible exception of chlorine and some chemicals. The best strategy is to have the water analyzed to ascertain what contaminates need to be filtered out. Usually a report can be requested from the city. A private well will require a professional to come out and test the water.
Some whole house water filtration systems can be combined with water softeners to create a water conditioner system. Water softeners will tend to the hardness minerals while the whole house water filtration system will tend to the other contaminates you want to avoid.
The process for selecting whole house water filters involves four key factors:
- Flow Rate: Water is delivered at a rate of gallons per minute (GPM). Most homes will be well served by a flow rate of 15 to 40 GPM with no effect on flow during peak use. Anything less than 10 GPM will be woefully insufficient.
- Filter Size: The ideal size for most homes is 4.5”x20” for a delivery rate of 25 to 40 GPM. But if the home is larger or has more concurrent water used than the average home, a larger filter may be a better choice. Look for a filter that will produce a flow rate of 25 GPM.
- Filter Life: The ideal filter mentioned above will last for 100,000 to 150,000 gal of city water. If a filter with a longer life is preferred, a carbon filter with a carbon bed will last longer. The long life will be improved with a backwashing valve that has regular backwashing cycles.
- Port Size: The best port size for the average home that uses water at an average of 15-40 GPM is 1”. Unless there is a higher GPM in a respective householde, anything larger essentially is useless.
Careful research and asking many detailed questions will help you to select the right filter for your home.