DI Tank In Havasu

I'm setting up some misters on a couple of oscillating fans that are around the boat. I was thinking a DI tank hooked up would be pretty nice. The nozzles wouldn't clog and I could use it to wash the boat and RV.
I don't know much about these things other than they are hard to purchase and are rented. Any recommendations where to get a tank in Havasu?

I know SJP got a setup.. Not sure a tank is what you want but rather to get the filtration system.. That said talking to my plumber friends they "claim" DI is more corrosive then normal water? Not sure if I believe that but that's what they say..