As you might expect, a whole house water filter is a filtration system capable of filtering all the water that enters your house. These systems are also called Point Of Entry (POE) systems because they are usually installed before the water reaches your heater, thus filtering both the cold and the warm water.

Physical filtration provides a physical barrier that removes larger particles from your water. Chemical filtration uses simple chemical reactions on water passing through an activated material (like carbon) to remove smaller impurities that physical filters can't catch.

Reverse osmosis filter systems are some of the strongest, most effective filters for drinking water. They are known to remove more than 99% of most dangerous contaminants in the water, including heavy metals, herbicides, pesticides, chlorine and other chemicals, and even hormones.