Buy Kent Excell Plus Reverse Osmosis+UV+UF Under Sink Water Purifier, made in USA & Japan. It has a Reverse Osmosis Membrane that purifies water up to 0.0001micron. It has a 7 stage filtration system & a Separate faucet installed on the countertop. https://www.aquakentro.com.sg/....product/kent-excell-