Welcome to Chief Purification Inc. Residential, Commercial and Industrial Water Filter Systems Leaders in Water Filtration - Chief Has the Answer ProductsWe use one of the best water filtering media on the market. DealersFind a dealer located near you. Commercial / IndustrialWe will custom build for your application. Video List EventsCome visit our booth at these 2023 Up-Coming Home Shows! Dates and times listed for EVENTS here. What is KDF-85?What is KDF-85? DesignSee a general outline display of how are filters are designed. Download PDFDownload a hard copy PDF of the backflush instructions and view the proper way to perform a backflush operation. Made in the USAChief water filters are proudly designed, built and assembled in the USA. Stop the InsanityAmericans spent 36.3 Billion dollars on bottled water in 2020.