●CERTIFIED 5-STAGE FILTRATION: Enjoy fresh purified water with our faucet mount water filter. With purification to 0.2um, the filter is NSF certified to reduce 99% comtaminants such as rust, sediments, chlorine, lead, odor and improve taste, making your water clean and healthy. (Not for reducing TDS) ●SAVE YOUR WATER BILLS: 1 filter can replace 3,028 plastic bottles (16.9oz each). You only need to change the filter every 4-5 months. There are 2 water modes between raw water and purified water for choice to prolong the filter life.It is recommended to buy a set of 1 Host and 4 filters, which is more economical and does not have to worry about 16 months. ●EASY TO INSTALL: With the product video and instruction, you can easily install the faucet filter in minutes. The package comes with 5 adapters ( 0.87" & 0.94" internal threads, 0.87" & 0.94" external threads, and a multifunctional adapter), which fits most standard faucets. The image details the compatibility of this sink faucet filter，Please read the picture carefully before buying to make sure this product is suitable for your faucet. ●FAST WATER FLOW: The average water flow of the faucet filter is 0.5 GPM(The maximum water flow is up to 1.78 GPM). You can fill 4 bottles of water in just 1 minute. No more waiting for clean and pure water when you want to have a drink, wash your vegetables and fruits, or clean your plates. ●VARIOUS APPLICATION: our faucet water purifier is an ideal choice for daily drinking, cooking, cleaning and washing face. You can install the tap filter in your kitchen, bathroom or tub to meet different water needs. It's small, lightweight and very convenient to use. Also suitable for mother's day gifts. Can the system reduce TDS? No. TDS value isn’t directly related to water quality. TDS stands for total dissolved solids.The presence of minerals keeps TDS at high levels ALTHY faucet water filter reduces harmful pσllutants while retains natural minerals which are beneficial for your health.