Easy Water is a scam
Don't believe any of the positive reviews about this product, the Easy Water water softening solution is a scam. The saying "If it sounds too good to be true, it probably is" is very relevant here. Easy Water claims to be able to soften the water through electromagnetism created by coiling an electrical wire around your water pipe, but this is certainly not the case as science does not support, yet rather refutes their case.
Most people with very hard water have a normal chemical-based purifier in which chemicals are added to the water supply. To them, (And you, probably, since you're reading this) Easy Water must sound like a dream -- far gone are the days where one would need to go out and buy more chemicals and remember to add them into the system in order to soften the water, just flip a switch and forget about it!
Wouldn't that be wonderful? Unfortunately, that's not at all how it works. Without getting deep into the science behind it, several engineers and scientists were in discussion about this product recently on a plumbing-related forum, and they all agreed on one thing: This sort of electromagnetism would have absolutely zero effect on your water quality.
When first turned on, the system apparently removes the scale buildup from inside your water heater, and as a result, they warn that the Easy Water system may actually degrade the quality of your water for a period of one or two weeks, but even if electromagnetism could magically clean out the inside of your tank, this wouldn't actually have any effect on the quality of the water, as hard water is caused not by the condition of your water tank, but rather the water supply in general. Quite comically, (for those of us who haven't bought in to this scam), even if it did succeed in cleaning out the inside of your water heater, this product would only be capable of making your water quality worse, not making it better in the long run.
Another thing that grinds my gears about this product is other people posting positive reviews about it. It seems to me like every easy water review that I read looks like it's written by the same person -- the situations mentioned are the same, or very similar, results are the same, and the reviewer gives the product their seal of approval, the only difference is the name of the poster. Personally, I think that there's an easy water employee out there whose job is to try to push positive reviews out on to the internet in order to squeeze more money out of honest people.
Whatever you do, don't fall for the easy water scam. If it worked, it'd be an amazing product, but sadly, it's just garbage.