Water ionizers splits water into ionized acidic and ionized alkaline fragments. Thus it brakes the hydrogen bond in water and lightens the water. The ionized alkaline water conmbats the free radicals/toxins in our body, thereby prevents diseases. Its always better to choose the best water ionizer available in market, than going for building one. Because its all related with health.
I've tried the Tyent USA water ionizers. Its the best in filter quality, durability and performance. Tyent USA has a range of Water Purification Products, that promotes health.