Alkaline water is supposed to be healthy for a person because the more OH- (negatively charged) ions it has, the more oxygen is available to the cells when the water is consumed. More oxygen is going to make a less inviting internal environment to bad bacteria, parasites, mutating cells (cells that are becoming cancerous because they were adapting to an environment that was in a state of acidosis (low oxygen and high toxic waste).
Alkalinized water is simply water that has more OH- (negativley charged) ions than OH+ (positively charged) ions. More OH+ ions gives you a more acid water and more OH- ions will give you a more alkaline water. Alkaline water (negatively charged) apparently has energy to give to other compatible atoms in your body. One oxygen atom and one hydrogen atom with a negative electrical charge ionizes water. It now has the ability to start a chemical reaction with other minerals. 'Every thing that happens in our bodies is a chemical reaction.
Anyone can make alkaline water by taking a tub with a divider with a filter (water can pass thru) and subjecting it to a low voltage charge like you'd get from an automotive trickle charger. Two electrodes would be fashioned from stainless steel (whatever you can hack apart with tin snips, dog dish etc) and secured to each section of the tub of water (submerged 2/3 into the water), the positive clamp from the trickle charger on one and the negative on the other. The postive water is acid, the negative water is alkaline and is the one you would want to drink. The positively charged acid water is darker and brackish looking where as the negatively charged alkaline water is bright and clear and actually has a fresh beautiful smell and taste like rain water.
That's just a quick buzz through of the many different ways to build one. Please don't build one with the above information, there's alot better instruction on the internet. I put a couple of links below for making your own.
I built one and used my husband's trickle charger. He hacked me up an old stainless steel dog water bowl for electrodes, it worked. My sister an I drank that water every day (8-8oz glasses) and we think we felt pretty good! While we were taking it I kept on researching about it, things such as what can leach from a stainless steel elctrode (as I noticed the stainless steel was beginning to discolor) what makes the best electrode material and what electrode material the companies who build the $1000.00 commercial water alkalizers are using.
Amazingly, I found from one Science website that nickel can leach from stainless steel after being charged with low voltage for a while. Stainless steel oxidizes as it is an alloy or mixture of reactive metals (click on the link below for more info. on this subject). The water ionizer companies mostly use platinum coated titanium!
My sister and I had been drinking ionized water from my homemade unit for about a month, but not wanting any more than the trace amounts of nickel our bodies need, decided we should abondon the alkalized water until we could learn more or at least be able to afford the safer alternative to stainless steel electrodes which is platinum coated titanium. I must admit that alot of the ionized water stuff makes sense, but then it makes sense that if God wanted us to drink alkalized water all the time all the world's waterways would be 'hot spring' like! Hmmmm........ It sure did make a pot of coffee taste much more delicious! It also made our well water taste light and more refreshing.
The most important thing about water is remembering to drink 6 to 8 glasses of it a day to make sure the cells of your body are hydrated and can perform all the important functions each specialized cell is designed to do!