A simple push-to-test over-ride button to cycle the pump with a green "function on" lamp may make you feel better.
You can put a small Hobbs switch in the pump discharge hose that must "see" pressure or it kills the ignition, opens the bypass valve, opens the BOV, triggers spark retard etc. when boost is on (a critical circuit must get 2 positive signals to work: 1 each from the manifold boost pressure sensor and 1 from the injection discharge). The water switch can be wired into a timer to delay it for 1-2 seconds to prevent premature triggering.
