Just finished building several of these and wanted to say, they work great and so I made a how to paper on it. These pumps will work to at least 75' depths, and possibly further down.

This is a completely modular design that can be made for your well even if it's shallow and several lengths longer for other wells. It's portable, light, and easy to use. Does not rely on electric or fossil fuels so you could say it's enviormentally friendly.

I should point out it's good for not only wells, but pumping out water from streams, rivers, barrels etc

Here is the link to the two part how to article. Any questions feel free to ask.

Well Pump part 1

Well Pump part 2