Abstract: A faucet having multiple water discharges includes a housing, an input water connection for the housing, a stream discharge on the housing, a spray discharge on the housing, a filtered water discharge on the housing, a water filter within the housing, and a control valve in the housing connected to each of the water discharges. There is an unfiltered water flow path from the input water connection to the control valve. A manual actuator accessible from the exterior of the housing operates the control valve to direct water from the unfiltered water flow path to either the stream discharge or the spray discharge. There is a filtered water flow path from the input water connection, through the filter, to the control valve. A filtered water manual actuator accessible from the exterior of the housing operates the control valve to direct filtered water to the filtered water discharge.

Abstract: A water filter cartridge for use with a water faucet includes a cover and a filter element located within the cover. The cover has a single unfiltered water input connection and a pair of water output connections, one for filtered water and one for unfiltered water. There is a conduit within the cover connecting the unfiltered water input connection and the unfiltered water output connection. There is a flow path within the cover from said unfiltered water input connection, through said filter element, and connecting to said filtered water output connection.

Abstract: A water input connection for a faucet includes a body which has a water inlet and a water outlet. There is a chamber within the body and there is a seat adjacent the water inlet. An antisiphon check valve is movable within the body chamber toward and away from the seat to open and close the water inlet connection. There is an antiflow valve movable within the body to open and close the water outlet connection. A spring is positioned within the body and biases both the antiflow valve and the antisiphon valve toward water inlet and water outlet closing positions.