How long can you let your water run without drying the well out?

It depends entirely upon (1) the water table, and (2) the rate at which you are extracting water. Some water tables are very deep

• meaning there is a great deal of water below ground. Others are

fed by aquifer, and thereby offer a virtual endless supply of water. Other water tables are very shallow, and drawing water steadily even for two hours can reduce the table significantly.