If you have a well you don’t need anything but a tickle, rope and bucket. I can’t imagine a natural spring not producing enough water.
When we had a spring at the farm I lived on for the first few years of my life, it produced more water than we would ever use. I was told we used the spring until Daddy dug a well.
But traditional wells nowadays are 4-6 inch pipe. The most straightforward is PVC pipe on a hand pump at the well head.