A mobile pump system includes a wheeled trailer adapted to transport the mobile pump system. Mounted to the trailer are a hydraulic fluid supply system, a power source and an adjustable pipe system that includes a discharge pipe section, an intake pipe section and a swivel section coupled between the intake pipe section and the discharge pipe section. The swivel pipe section allows the discharge pipe section and the intake pipe section to be pivoted independently of each other. Hydraulic cylinders and extensible pivot arms pivot the discharge pipe section and the intake pipe section so that they can be positioned at various angles with respect to the trailer frame. A submersible hydraulic pump is mounted to the intake pipe section and is driven by the power source and hydraulic fluid supply system.