A faucet includes an internal waterway at least partially formed of a first material. The internal waterway includes a valve seat, a conduit, and a unitary body. The valve seat is configured to receive water. The conduit is coupled to the valve seat. The conduit is in fluid communication with the valve seat and configured to receive the water from the valve seat. The unitary body is formed of a non-metallic material having a processing temperature less than a temperature at which the first material forming the internal waterway is undesirably affected, wherein the unitary body is molded around the internal waterway.