We're on a well, miles from nowhere. The first year I tried using the well to add water. Dropped one end of my Martha Stewart (KMart) garden hose in and turned the faucet full on. 40 minutes later my wife's hollering about no water in the house. 30 minutes later letting the well recharge, and everything's back to normal.

What I've found is I can attach the sprayer and lock it full on and then the water will flow for hours if needed. I've let it run all night when I had to. The sprayer locked open just makes a convenient predictable restriction that won't tap the well out. In my 17x33 I get one inch every two and a half hours. That's a pool that's nearly full to begin with.

But the big lesson I learned was about the foul reaction between iron-rich well water and chlorine. It only takes a couple inches of water and a shocking dose of Cl to reward you with a brownish green pond. Back a couple months ago there was a thread with some great pictures of this. My solution was to put the sprayer into the skimmer so the water's immediately filtered thru my DE filter. Apparently the DE effectively filters out the iron sediment.

I'm not saying you should do this too. I've no idea if your pump will be up to the task. Ours is 20 years old, tho, and hasn't suffered any damage.

The last thing I'd advise is to call your local fire department, or next best, a local water service to bring the bulk of it in. I had to do this once and 4000 gallons set me back $175. But it was over and done with in a half hour.

HTH
Chuck