While visiting Vegas, I was looking for a place to fill my water bottle and Yelp lead me to this store!
They offer free cleaning of the bottle (I believe) and they fill the bottle to the very top if you go inside the store!
There's a vending machine outside as well, but I don't know how that works since I only went inside the store.
Alkaline water is $1/gallon.
It's a bit expensive side compare to the one I always get alkaline water. But it's still worth it.
They also offer filtered water (non-alkaline) for 25 cents/gallon as well. You get to choose which ever one you want.
Very pleasant customer service.
I will definitely go back for water when I'm in Vegas again!!