This is the most common type of filter and is often used in conjunction with other filtration methods for maximum toxin removal.

($100-$5000) depends on type of filter

https://homeguide.com/costs/water-filtration-system-cost#:~:text=Installing%20a%20whole%2Dhouse%20water,the%20system%20type%20and%20size.

https://www.cbsnews.com/boston/news/massachusetts-water-quality-concerns/

ion exchange filters consist of a substance that will exchange one ion for another as water flows through it. For example, ion exchange will replace calcium or magnesium ions, which cause water hardness, with sodium ions. This will “soften” the water.

Although ion exchange helps with hard water and some radioactive material, the filter does not remove organic material, particles, or bacteria as effectively as other filtration options. As a result, it should be noted that ion exchange is more commonly associated with water softeners than filters

($400-$3000)

https://purennatural.com/collections/water-filtration