Our well has a submergable pump set at 100 feet in a 4 inch casing, the problem we have is the screens on the pump build up a redish scale which causes water flow problems. This also creates a problem when trying to pull the pump because of buildup of this scale at the water line of the casing. The water is used for irragation only and have used it for 10 years with no staining of concrete or buildings. My queston is can a deep water jet pump be used at 95 to 100 feet with any kind of flow rate around 10 gal min ? Having to pull pump every 3 to 4 years is a pain when it gets stuck every time. Pros and cons about the two systems please.