Countertop Reverse Osmosis System With Reservoir RC540T35This Countertop Reverse Osmosis System attaches and detaches easily to any standard kitchen faucet - so it's a great drinking water solution if you don't want to drill any holes in your kitchen counter. This system is BPA free!The system features four stages of filtration: A 5 micron sediment filter (or reducing contaminants such as aluminum, rust & asbestos) Two carbon filters (for reducing contaminants such as chlorine, pharmaceuticals, cosmetics & pesticides) A reverse osmosis membrane (for reducing contaminants such as lead, fluoride, arsenic & cyanide) The water filters are hidden from view but are easily accessed and changed by simply removing the back panel. All the filters are standard sized and are easy to change when required (it is suggested that the filters be changed every six months and the reverse osmosis membrane every three years).In short, this counter top reverse osmosis system provides great quality water and looks good in any kitchen.ﾠ ﾠ ﾠ ﾠ ﾠ ﾠ A - Universal Snap Adapter with Wing Valve - fits most faucet threads, includes 2 aerator adapters, and has built-in wing valve to control reject water B - Colour Coded Tubing Identification - tubing easy to install and use C - Heavy Duty Lexanﾮ Holding Tank - manufactured with FDA approved Lexanﾮ Polycarbonate for drinking water applications D - Booster Pump for Low Pressure (optional) - pump runs continuously until the holding tank is full, then shuts off E - Quick-Connect Fittings - fittings require no tools, eliminate leakages, and are easy to change F - Spin-Weld Seals Cap and Body - triple O-ring seal assures the purity of the product water will not be contaminated by the feed water G - Tank Level Control (TLC) - senses the water level through 3 stainless steel sensors to conserve water and energy (must be plugged-in to electrical outlet) ﾠ ﾠ