Dr. Mercola Countertop Drinking Water Filter System - Patented Dual Filtration Water Faucet Filter - Water Purifier Removes Lead, Chlorine Byproducts, Microbial Cysts and More - California Certified COUNTERTOP WATER FILTER - Convenient and attractive sink filter unit, easy to install in just minutes. This filtered water dispenser fits standard kitchen faucet. Enjoy fast, efficient and plentiful fresh filtered water. Patented water filtration system technology leaves in beneficial potassium ions and naturally occurring trace minerals, giving you pH balanced, healthy and pure water. Replacement filter is not included. PATENTED DUAL FILTRATION - Exclusive 5-stage dual cartridge system uses a combination of carbon filtration, ion exchange, and sub micron filtration, to prevent clogging and deliver extended filter lifespan. "A" water filter cartridge removes largest contaminants (approx. 5 microns in size), including particulates and chlorine. "B" water filter cartridge removes smaller, more difficult, often highly toxic contaminants, including microbial cysts resistant to standard water purification. PURIFIES DRINKING WATER - This water filter faucet is designed to remove hundreds of potential water contaminants including: lead, toxic chlorine byproducts, chlorine-resistant microbial cysts, herbicides, pesticides, industrial solvents, synthetic chemicals, sediment and more. Greatly reduces chlorine taste and odor. Improves texture and feel of your water, by removing particulates. Water ionizer technology balances water pH, replaces toxic lead ions with healthy potassium ions. BEST PERFORMANCE AND COST-EFFECTIVE - Superior performance, convenience, and value compared to a reverse osmosis water filtration system, under sink water filtration system, distilled water machine, water softener, or other standard countertop water distiller devices. Enjoy purified water for less than $0.10/gallon when this countertop water filtration system is used and quick change filters are added as directed. Designed with advanced technology to filter water, built to last. CALIFORNIA CERTIFIED - Water filter for sink and kitchen meets or exceeds California Registration standards, among the highest standards for home water filtration systems, measuring water safety, purity, and quality. Replace filters with Dr. Mercola Countertop Filter Replacement Cartridge (CFR2000). This product is backed by a 30-Day Satisfaction Guarantee. Customers prefer Dr. Mercola, which has been providing high quality home health products since 2001. Lead Chlorine and toxic chlorine byproducts Chlorine-resistant microbial cysts Herbicides Pesticides Industrial solvents Synthetic chemicals Sediment and particulates The carbon filter extracts the largest contaminants, including particulate matter and chlorine, to help prevent clogging. The sub micron water filter removes more difficult-to-extract contaminants and includes a complex ion exchange process that replaces harmful lead ions with healthy potassium ions. It also removes toxic disinfection byproducts - Trihalomethanes (THMs), Volatile Organic Compounds (VOCs), and Haloacetic Acid - and chlorine-resistant cysts  (like Giardia Cryptosporidium). Herbicides, pesticides, industrial solvents, and other synthetic chemicals are removed through absorption.