We just had a sump pump & trenched drain pipe installed in our basement. Rained all last night. Crock had filled above one of the drain pipe inlets. I manually activated the pump & it emptied normally. It seemed like another inch or two & the float would have kicked it on. Due to having to go under a sewage drain pipe, one of the plastic drain pipes enters the crock pretty low. Maybe 6"-8" from bottom. My question is... Should the pump kick on before the water level covers the drain pipe. I don't like the idea of all that water sitting in the plastic drain pipe.