Last March I sunk 2 wells into the shoreline. One for my son, the other for me. These extend about 10 feet into the earth. These shore wells are always dicey when the water levels fluctuate in a body of water that can get extremely stormy and have sand bars that shift around.
My son's well is pumped using a 220V submersible. Standard 3 inch diameter deep well unit. Pumps water very quickly, silently. Both houses run off this pump. The other well employs a typical foot valve arrangement via a 220V jet pump on land. That covers all tree and grass watering.
As bad luck would have it, during storms the submersible would draw sand into the bottom of the well. About 5 feet despite filter cloth and a ton of course rock and gravel. This takes a while. Maybe 6 months. The only way to get rid of the sand is to pump it out with an extremely heavy commercial pump that's rented. Impossible to do in winter. A bit of a concern.
So I got wind of this new type of pump made in Italy. We employ a Sand Point (pictured in #3) in the well and hook that up to this "continuous pressurized pump" . 120V. We will see.