Osmio Clarity Gravity Water FilterOsmio Clarity Gravity Water Filter System The Osmio Clarity uses the best performing gravity water filter elements on the market we know of, the Coldstream FTO+ filters made in the UK. The Housing is made using borosilicate glass and with a mango wood stand and lid, making it a beautiful and functional shrine to your blessed water for your home. Recommend for households up to 4 people. Filters are recommended to change every 6 months, but it depends