a pump body defining a plurality of channels, the plurality of channels being positioned annularly in the pump body;

a rotatable wobble plate disposed in the pump body;

a plurality of pistons each located in a respective one of the plurality of channels and contacting the front side of the wobble plate, the pistons being reciprocatable within the channel along a piston axis;

a plurality of pistons each located in a respective one of the plurality of channels and contacting the front side of the wobble plate, the pistons being reciprocatable within the channel along a piston axis;

water passages defined by water inlets and water outlets each in selective fluid communication with one of the plurality of channels based on a phase of reciprocation of the respective piston for that channel, each water inlet providing low pressure water to the channel while the respective piston for that channel is moving away from the water inlet, and each water outlet receiving high pressure water from the channel while the piston is moving towards the water outlet;

a plurality of inlet check valves, each associated with one of the channels, each inlet check valve positioned between each respective water inlet and the associated channel, the inlet check valves reciprocate along an axis parallel to the piston axis to transition between closed states and open states; and

a plurality of outlet check valves, each associated with one of the channels, each outlet check valve positioned between each respective water outlet and the associated channel, the plurality of inlet check valves and the plurality of outlet check valves are located substantially on the same plane in the pump body, each one of the plurality of outlet check valves are oriented perpendicular to the piston axes, the outlet check valves reciprocate along an axis perpendicular to the piston axis to transition between closed states and open states, the plurality of channels being positioned annularly in the pump body.