This is a great water purification product for your emergency preparedness bag and survival toolkit. It is a liquid mineral-based water purifier. It makes questionable water from any freshwater source crystal clear and safe to use. It reduces or inactivates 200+ toxic contaminants, including numerous pesticides, herbicides, fungicides, heavy metals, pharmaceutical drugs, disinfectants and VOCs. Made with natural ionized sulfate mineral salts so is 100% natural. It also has the added health benefit of purifying the body of heavy metals. Some have reported that it may help heal autism if you bathe in it. Internet req. Referral shows where to buy. Contact info.