This is the rolls royce of water filters, especially for those of us who are conscious of fluoride, heavy metals, and other pollutants in tap water. Truly clean water is your first step to whole-body health, especially within your glands such as your thyroid. This water filter is big enough for families of up to 4 people, holds 1.5 gallons, and filters not only heavy metals but also bacteria, cysts, parasites, and sediment. Because of the tiny pore size in their patented filter, they can remove submicron viruses without the use of chlorine. You can check out their percentages and specifications on exactly how well they filter right here.