What is the best water to drink?

Tap water:
is municipal water that comes out of the faucets and has been treated, processed and disinfected. It is purified with chlorine and generally has added fluoride. But one of the byproducts from using chlorine in our drinking water is linked to cancer.

Reverse Osmosis Water:
goes through membranes that remove larger particles, pollutants and minerals and is usually at a neutral pH level of 7.0.
Alkaline Water:
has sodium bicarbonate added so the pH level is at 8.0 with usually the reverse osmosis water but has no other minerals in it. Alkaline water claims to help many help problems like digestion. Soft and sweet.
Oxygenated Water: is the Reverse Osmosis Water with pure oxygen added once in the pulmonary system can ease breathing after a workout, increase energy and clear foggy thoughts. Also has a clear, crispt taste like an elixir.
Structured Spring Mineral Water: is the Reverse Osmosis Water pumped through a canister shaped inside as if it was a natural mountain side setting. Water forced through the canister to imitate water flowing over rocks, waterfalls and underground collecting minerals and bringing the original water memory back to the water. It’s pH level is at 7.2 and has a very nice clean taste to it.
Kangen Water: Kangen water originates from Japan, where users have been touting its health benefits for years. The process of creating Kangen water attempts to replicate the supposed health benefits of various sources of “healing waters” around the world. The name Kangen is reputed to translate to “return to source,” meaning that the process creates water that has been purified and is more like the water found in unspoiled nature. Kangen water is created by passing the water through the Kangen filtration machine which ionizes the water to eliminate free radicals, changes the pH of the water to an alkaline or basic pH (8.5-9.5), and adds what is called “active hydrogen” to the water. Health benefits claimed by the makers of Kangen water machines include reduced aches, pains, and general fatigue, slower aging and cleansing of all the body’s systems.