If you think cutting a drop pipe from longer to 26 feet will help somethin, other than maybe picking up sediment, you are wrong. Bad idea. It will not make it easier on the pump. All it does for pumping is to let the pump suck air if the water level drops that deep.
Pumping through a drop pipe that opens 26 ft below the pump is not significantly easier than pumping than one that goes down 36 ft. One down 36 feet will never suck air because the barometric pressure never gets that high. It's the barometric pressure that determines the maximum lift you can do above the surface of the water. WorthFlorida's 20 ft drop pipe did not suck air because the water table was high enough, and the well was good enough replenishing the water that the water level did not drop much when pumped. Putting in a 50 ft drop pipe would not have hurt, other than making the pipe heavier to lift out.
In figuring how many gpm a pump pumps, it is the distance to the surface of the water that counts-- not the distance to the opening.
Last edited:
