In the last few years there has been a lot of hype about alkaline water. There is no doubt that our diets are way too acidic as well as our water, however research is still inconclusive as to how beneficial water alkaline water is since it is the ash from breaking down what we ingest that has the profound acidic or alkalizing effect on our blood stream. Lemons for example are very acidic but the ash produced from breaking them down is actually highly alkalizing. So, if you are in doubt or tight for cash and can't afford all that expensive water, then squeezing some lemon in filtered water is will do the trick anyhow.
squeeze some lemon into purified water. It is very alkalizing.