Having had the knowledge that the choice of drinking water is critical to my health, I understand that only if the water system goes through the process of ionization, that provide ‘negatively charged’ water (-ORP) is the one that has real health benefits. You must check out the company VWA (www.vwa.com.my) which provides the top water ionizers independently rated by 3 major research companies in USA. You cannot go wrong with this.