Alvacado,

You should be able to use an evaporative cooler pump on those 55 gal drums. They are fairly straightforward, there's a gozinna and a gozouta and a place to hook up a power cord for 110 ac.

Also, I've seen drill mountable pumps that work with a standard power drill at many hardware stores.

Like OBG says, RV pumps that work on 12v dc and sometimes switchable to 110 ac are abundant and not too expensive.

There's also manual crank pumps that are used for siphoning that are pretty cheap.