When your well runs out of water, there are several steps you can take to address the situation. The first step is to determine what has caused the aquifer's depletion and whether it is due to damage or normal wear and tear on your well system. This can involve consulting a professional, such as a well inspector or pump technician. Once you have determined the cause, you can take steps to repair or replace any damaged equipment. Additionally, you may need to restrict water usage to allow the aquifer time to recharge. It may also be necessary to drill a deeper well or install an alternate water source in some cases.