Systems and techniques to mount equipment in a watertight fashion to a wall. A watertight mount includes a mounting base including a flange and a socket having an interior surface including mating threads. The mount may include a base plate coupled with the mounting base, the base plate defining an opening through which the socket passes. The mount may also include a gasket coupled between the base plate and the mounting base, the gasket defining an opening through which the socket passes, and the base plate may be releasably coupled with the mounting base through a spa wall. The base plate may be coupled with the mounting base using a connector, such as a nut defining a threaded hole that matches securing threads on an exterior surface of a barrel shaped socket in the mounting base.