How deep can you drive a sand point well?
Correspondingly, how deep can you put a sand point well?
Speedbump is right, a well can be 100' or deeper and you could still pump water with the pitcher pump or a shallow well jet pump as long as it isn't over 25' to the pumping level.
In this regard, how do you get water for a sand point well?
To determine when you have hit water, lower a weighted string down the pipe. You will hear when it hits water. Drive down about 5 more feet to allow for seasonal water level changes. Do not drive down too far or you may push your sand point past the water-bearing formation.
Drilling a well costs $5,500 for an average depth of 150 feet. Most projects range between $1,500 and $12,000. Expect to pay between $15 and $30 per foot of depth, or up to $50 for difficult terrain. Digging might be enough for shallow depths, ranging between $10 and $25 per square foot.