Filtering water bottles
This type of bottle is often BPA-Free & more commonly uses carbon (activated charcoal) filtration. UV light can also be used to purify water. UV filtration bottles are popular and convenient for those who are travelling to areas where water quality may be suspect or where bottled water is not readily available. UV is effective against all water-borne pathogens.UV bottles can be expensive and require power (i.e. batteries) to function. Recently, Timothy Whitehead has invented a UV filtering water bottle that utilizes a hand crank to generate the necessary power. It’s not yet available for purchase.Carbon filtration bottles will eliminate some organic chemicals and improve the taste and odor of water. Carbon filtration will not eliminate pathogens, metals or nitrates from water.Carbon filters must be changed regularly to maintain effectiveness.