You can easily spend a lot of money for little or no benefit...
If you're on a municipal water supply, they are required by law to test for contaminants using independently certified labs, and annually report that infomation to you the consumer. If there is a significant violation, they have to report that at the time of violation. So unless there's an identified problem (which they will have to fix anyway), you could find yourself spending a lot of money on additonal water treatment for peace of mind with no real result. If you're on a well, it won't hurt to have your water tested, but unless you have a reason to suspect contamination, you're most likely fine there too. Personally, I maintain the carbon filter on our home refrig icemaker/water dispenser and keep a Brita filter at work. Not for health concerns, but simply because I think chlorine, particularly chloroamines, taste like crap. For just about everyone reading this, there's only a couple of reasons for spending your hard earned money on point of use devices. That would be for either taste, or for non-health related issues such as high levels of hardness, or things such as high iron or sulfur levels. Written by someone with 35 years experience in water treatment.
