We have a shallow dug well, about 15'. The well has gone dry 3 times this summer. The last time, we had more water brought in, the pump started acting up. The water tank would only pump up to 10 psi and the pump would keep running. We replaced the pump (3/4 hp jet pump) and the foot valve last night, but we can't seem to get it to prime. Looking in the actual well, we figure the water is up about 3 ft. so I think there is enough water in the well. Any suggestions ??