My wife and I just completed a 12,000 mile tour of the U.S. When in Texas I got a chart showing the average monthly rainfall in Kerrville, I think it was. Every month had about two inches of rain and there was four inches in May and four inches in October.
Unfortunately, where I am, just north of San Francisco, we have a wet season and a dry season. Other than the usual day of showers around July, it can regularly go months with very little measurable rain.
I did check some of the web sites suggested by others and find that a manual pump for my well is not out of the question. Our present submersible pump is at 180 feet. I don't know what the static water level is. A couple thousand dollars might do the job.
The force needed on the pump handle might be around 13 pounds and it can be plumbed to pressurize the existing tank. I don't recall how many strokes per gallon.
My daughter and her husband live on adjacent acreage. They are planning to build soon and I will have to encourage them to install an oversize propane tank and buy a propane powered generator for their well.
Have you ever experimented with collecting drinking water from condensation? Take ten foot long stakes and drive them into your lawn in the shape of a circle. Put a large bowl in the middle. In the evening, spread a piece of plastic across the top of the stakes with rock in the middle directly over the bowl. Circle the stakes with Saran Wrap, sealing the circle shape. In the morning you’ll have a few cups of water in the bowl.