A sump sprinkler system for use with residential and commercial buildings. The sump sprinkler system comprises a system controller and a sprinkler pump in communication with the system controller. The sump sprinkler system also comprises an intake tube connected to the sprinkler pump, wherein the intake having an end arranged in a sump of a building foundation drainage system. The sump sprinkler system also comprises a water level member or members in communication with the system controller, wherein the water level member is arranged in the sump. The sump sprinkler system may be modified to provide a sump water supply system for other building water uses or a sump geothermal field system.