There's no proof that "alkaline" water is good for you. If anything, a drop of lemon juice or milk rapidly changes the pH level of water.

You mentioned in your "short description" of the idea.

Anyway, if I was a consumer I will not buy gimmicky water products because through my own understand is humans have been drinking unfiltered water for thousands of years, i.e. water which could have bacteria, sediments etc. Our standard of water today is much cleaner already by comparison.

Personally, I'm more interested in water related products that:
1) Prevents sediments settling on the pipes in the house to prevent rusting/clogs/leaks
2) Stops my light colored clothes from turning gray-ish over time after repeated washing.

Yes. But are you planning to go into the market for suckers for some short term profit, or a viable market for long term growth?