It is estimated that 22 milliard of water bottles end up in landfilds every year. People need to be encouraged to switch to reusuable waterbottles and use tap water. 

Actifated charcoal is known for its absorbant properties. Its removes metals and chlorides while enriching the water with beneficial minerals. The charcoal works in a 100% natural way. 

You can use is for 6 months, boiling it after 3 months to reactivate it.

After the 6 month mark you can repurpous it for absorbing bad odors in shoes or a fridge, or give your plants soil some added minerals.