When purchasing replacement items, make sure you buy only Authentic Berkey^® Products from an Authorized Berkey^® Dealer. There are products available online that may claim to perform like Berkey^® products, or may look like Berkey^® products. However,  we advise customers to watch out for vague marketing statements that do not mention specific contaminants, nor reveal the exact % reduction of contaminants through testing. Berkey^® products are the gold standard in water purification and filtration.