I purchased my current home about 8 months ago. It is in extreemly sandy soil (Like at the beach). About 4 months ago the pump was surging so and the pressure tank was low. I recharged the tank and replaced the pressure switch and had no water problems. Recently I started having very low water pressure. I went to see if the pump was surging again thinking the bladder might be bad on the tank. I checked the pressure switch and the switch was closed so the pump should have been running. I checked the breaker and it was not tripped. Then I noticed that every three or four minutes the pump will kick on and run about ten seconds and then kick back off. This happens with no action on the part of the pressure swith. If I open and close the switch it has no effect on the pump. I have also start noticing sand in the toilets and bath tub. Anyone out there know if the sand is indicating that the well is going dry or does this sound like a bad jet pump?