We offer the best water filters man can buy for these excellent reasons:

0. Water ionizers naturally filter the water by removing most of the acidic minerals [such as chlorine and fluoride, which are very harmful to your body] in the water,
0. Our water ionizer companies are quite competitive with each other and excellent filtration is one of the benefits of that, [i.e., they include the best water filters either internally or externally]. You can see a full breakdown of the best water ionizer filters on our Water Ionizer Comparison page.
0. Of course reverse osmosis is excellent filtration, but most RO systems do not re-mineralize your water after removing all of the water's natural minerals. Ours does! So, for the sake of your health, make sure to check out one of the best water filters ever ... our Reverse Osmosis Remineralizer System. This system was made specifically to work perfectly with a water ionizer. First you purify the water, second you remineralize it lightly with the very best mineral blend for health, then finally you ionize the water, so it will be just the right pH level to alkalize your body as well as provide it with an abundance of antioxidants!
0. Finally, we offer a full line of the best water ionizer pre-filters to handle any specific water-related problem you may have. For instance, if you live in the city, you should check out the Arsenic-Lead-Fluoride Prefilter, the Super-Carbon KDF 55 Prefilter, and if you have well-water, you may want to check out the Super-Carbon KDF 85 Filter for Sulphur & Iron or purchase a Comprehensive Well Water Test Kit to learn more about what's in your well water. Or, if you have super-hard water, you may want to check out the Spartan Ionizer Shield, which offers not only the best water filtration for water hardness, but also has multiple layers of filtration to handle anything [short of sodium] that could be in your water.