This advanced Brita faucet-mounted filtration system installs in minutes and lets you switch between filtered and unfiltered water with the flip of a switch. Fits all standard faucets and installs without tools. Features: Convenient Spray Option Electronic Filter Life Indicator No Tools Required Quick and Easy Filter Replacement The revolutionary window design lets you watch your filter turn everyday tap water into cleaner, great-tasting drinking water. Removable cap lets you see what the filter takes out Includes 1 filter Brita part # 42645 Brita Water is Better Water Brita is the world's #1 brand of household water filtration. Our advanced technologies transform ordinary tap water into healthier, great-tasting drinking water. Brita's multistage filter reduces harmful contaminants (see table below) and has an added layer to trap sediment, so all that's left behind is great-tasting, cleaner water. Great Value & Convenience Attaches easily in minutes No tools required Fits all standard faucets Quick and easy filter replacement Contaminant Reduction Reduces These Harmful ChemicalsSourcePotential Health Effects LeadCorrosion of household plumbing systems; erosion of natural depositsInfants and children: Delays in physical or mental development. Adults: Kidney problems; high blood pressure AsbestosDecay of asbestos cement in water mains; erosion of natural depositsIncreased risk of developing benign intestinal polyps Total Trihalomethanes (TTHMs)By-product of drinking water disinfectionLiver, kidney or central nervous system problems; increased risk of cancer The Brita OPFF-100 Faucet Filtration System has been tested and certified by NSF international, the nation's leading testing authority for water filtration products against: NSF/ANSI Standard 53 - Health Effects - Reduction of: Lead, Cysts (Cryptosporidium and Giardia), Asbestos, Turbidity, o-Dichlorobenzene, Alachlor, Atrazine, Carbofuran, 2, 4-D, Chlordane, Heptachlor epoxide, Lindane, Methoxychlor, Trichloroethylene, Styrene, Toxaphene, Chlorobenzene, Benzene, Endrin, Carbon tetrachloride, Simazine, Toluene, Tetrachloroethylene, Ethylbenzene, TTHM, VOC NSF/ANSI Standard 42 - Aesthetic Effects - Reduction of: Chlorine (taste and odor), Particulate (Class I)