Walk into any store nowadays and you will see all sorts of water types and products. There is tons of information around the internet if you want more information but here are some important tidbits.

1. Bottled Water: – Can be just bottled tap water! – If it has sat in heat will leach very bad estrogen type compounds into the water. – Most are just filtered spring water from local sources. – Many expensive name brands do not release specifics of the bottle source. -When purchased in this form can cost 1800% more than its cost (WAY more than your gasoline)! Nestle was recently ranked one of the top, most consistent and full disclosure mass brands.
2. Best water for home: Your best quality and long term bang-for-the-buck is reverse osmosis systems. You can find them for ~$150 undercounter versions in many discount stores. They typically last well beyond the recommended exchange times if you are on a municipal water system. Minimally use a faucet or pitcher filter.
3. Bath time: The Chlorine in water that is very bad for us, evaporates in relatively low temperatures. So what are you breathing when you shower? Chlorine Gas! (Much worse in reality than drinking it). If you have never tried a shower filter you will be amazed at the difference you notice afterwards. While less convenient, I recommend END stage filtration like a shower filter rather than a whole house system, since there is an argument for wanting the chlorine in the pipes themselves to avoid bacteria.