A multiple-pump removable pump system comprising: a pump enclosure for receiving a plurality of removable pumps , the pump enclosure having at least a front panel , a rear panel , first and second side panels , a bottom panel , and a removable top panel , the panels defining a pump enclosure interior space , wherein the rear panel includes a plurality of openings and at least one horizontal lip disposed above the plurality of openings , the lip having a plurality of slots formed therein so that one slot is positioned above each of the plurality of openings ; and a plurality of removable pumps at least partially disposed within the pump enclosure interior space , each removable pump including a pump housing having an internal pumping chamber , an inlet port and an outlet port , each of the ports being in flow communication with the pumping chamber , a spring biased retainer pin received within a retainer pin hole formed on an outer surface of the pump housing , a pump motor , and a pumping mechanism driven by the pump motor and at least partially disposed within the pumping chamber , the pumping mechanism being capable of receiving a fluid through the inlet port into the pumping chamber at a first pressure and discharging the fluid from the pumping chamber through the outlet port at a second pressure which is greater than the first pressure, wherein the pump motor and at least portion of the pump housing are disposed within the pump enclosure interior space , the inlet port and the outlet port extend through one of the plurality of rear panel openings , and a portion of the retainer pin extends through one of the rear panel slots so as to retain at least a portion of the removable pump within the pump enclosure . a pump enclosure for receiving a plurality of removable pumps , the pump enclosure having at least a front panel , a rear panel , first and second side panels , a bottom panel , and a removable top panel , the panels defining a pump enclosure interior space , wherein the rear panel includes a plurality of openings and at least one horizontal lip disposed above the plurality of openings , the lip having a plurality of slots formed therein so that one slot is positioned above each of the plurality of openings ; and a plurality of removable pumps at least partially disposed within the pump enclosure interior space , each removable pump including a pump housing having an internal pumping chamber , an inlet port and an outlet port , each of the ports being in flow communication with the pumping chamber , a spring biased retainer pin received within a retainer pin hole formed on an outer surface of the pump housing , a pump motor , and a pumping mechanism driven by the pump motor and at least partially disposed within the pumping chamber , the pumping mechanism being capable of receiving a fluid through the inlet port into the pumping chamber at a first pressure and discharging the fluid from the pumping chamber through the outlet port at a second pressure which is greater than the first pressure, wherein the pump motor and at least portion of the pump housing are disposed within the pump enclosure interior space , the inlet port and the outlet port extend through one of the plurality of rear panel openings , and a portion of the retainer pin extends through one of the rear panel slots so as to retain at least a portion of the removable pump within the pump enclosure . <EOS>