I think that an irrigation system would have too low of pressure to fill a 2 inch pipe and push the water up. What if you used a standard hose, and put it in the top, it would take a while, but you could turn it on, go have lunch, do some other work, then return. If you had access to a spigot, maybe where the irrigation system was hooked on, that would work better, with a normal garden hose. Good luck.