Water is such a precious commodity! Here in Louisiana, we have seen the horrors of the Gulf Oil spill and Katrina and how the purity of water can be destroyed in a second with one bad decision or a natural disaster. Throughout the US, fracking is becoming common...with little regard to our water tables, and dumping waste materials into streams and rivers still happens despite laws. We are living in a Post Fukushima world, full of auto emissions, cell phone towers, microwaves, cell phones, televisions, computers, etc...these energies can and do affect our natural cycles...I like to double filter my water...once as it comes from the tap and then again through a filtered water bottle. I also like to think that we will wake up soon and take better care of the precious clean water we do have.