Please do not purchase a "Filter Cartridge" if you don't have the outer casing for the Nano XP filter. The Nano XP Filter is our most advanced replacement filter, engineered for faster flow, powerful filtration, and long-lasting performance. Featuring innovative dual-layer nano pleated media with twice the surface area and up to a 30% faster flow rate, the Nano XP is independently tested to NSF/ANSI Standards 42, 53, 401, P231, and P473, with NSF certification to Standards 42 and 372. Designed for everyday tap water, well water, camping, and emergency preparedness, it helps reduce a broad range of contaminants while delivering up to 100 gallons of clean, great-tasting water per filter. Advanced dual-layer nano pleated filtration provides twice the surface area for improved flow and performance Up to 30% faster flow rate than previous Epic pitcher filter designs Helps reduce 70+ contaminants, including PFAS, lead, pharmaceuticals, bacteria, viruses, and microplastics Does not reduce fluoride, making it ideal for those who want to retain naturally occurring fluoride in their drinking water Independently tested to NSF/ANSI Standards 42, 53, 401, P231, and P473 NSF Certified to NSF/ANSI Standard 42 and NSF/ANSI/CAN 372 100-gallon filter capacity, lasting approximately 3–4 months with typical use Replaceable cartridge design helps reduce plastic waste by up to 75% by allowing you to reuse the outer filter housing Helps replace over 1,000 single-use plastic bottles over the life of each filter Proudly assembled in the USA using premium filtration media Ideal for everyday drinking water, well water, camping, travel, and emergency preparedness