Selectively secured liquid dispenser, mount and associated method

A liquid dispenser includes of a bottle for housing the liquid, a pumping mechanism for discharging liquid from the bottle, and a boss that is connected to and extends from the bottom of the bottle. The boss on the bottle mates with a socket in a base to selectively secure the bottle to the base and a countertop or wall mounted support. The boss and socket are shaped so as to allow for a single orientation of the bottle. The combination of the boss on the bottle and the socket in the base provides a counter-top mounting system to securely anchor the liquid dispensing device. The apparatus also allows the soap reservoir to be easily refilled and utilizes readily available pump components.