In the last few days I have received requests for information on deep well pumps. There are internet suppliers that sell hand pumps for deep wells. A search under “deep well hand pumps” will show several. Lehmans (http://www.lehmans.com/) a highly reputable company sells hand pumps that are good to 175 – 200 feet. Some brands say that theirs will work to 300 feet in an emergency, but that the number of strokes required is less than desirable. If the water level in your well is over 300 feet, I have not found a good method of retrieving water other than a windpump (windmill) they are still available on the internet.
One thing, it is important to remember is that even if your well is over 300 feet deep, the water table may be much higher in the casing. We have a well in our family that is cased to 200 feet deep but the water level is only about 13 feet deep. A shallow well pump that is much cheaper, may work in this well. If you choose to use a shallow well pump, it is possible that under heavy usage the water level could drop.
Tomorrow I will show how to make a bucket with a foot valve in the bottom that you can lower down a well shaft.