Equipped with powerful Black Berkey Elements, the 2.25-gallon Big Berkey Water Filter System removes or dramatically reduces over 200+ typical contaminants found in tap water, lakes, rivers and other freshwater sources at home or in the great outdoors for just pennies per gallon. The Big Berkey System can be used on a countertop in your kitchen or office to transform bad-tasting tap water into delicious drinking water that's also ideal for making your favorite beverages or cooking. Or, take it along with you in the great outdoors as a convenient, reliable potable water source for camping, fishing, RVing, off-grid living and in emergencies, disaster preparedness and recovery scenarios. The Big Berkey Water Filter » System is constructed of durable, highly polished AISI 304 stainless steel, and can filter water for about 1-4 people each day—no tools, electricity, or plumbing are required.