With least six reasons for installing one that works in your well. But, just because the word "pure" is included on the label does not imply the water filtration system is a purifier. Second, any type of toxic material in it water tend to be cleaned away by the filter. http://3081089em4.Wicp.vip/ambrosebromilo/gravity-water-filter2066/wiki/Feng+Shui+Cures+For+Health+And+Purification