The answer to a septic tank constantly running is that there is likely an issue with the septic system. This could be caused by a blockage in the drainfield, a problem with the septic tank itself, or an issue with the pump. Symptoms may include gurgling sounds, water backing up in the home, or sewage odors.
If your septic tank is constantly running, it's important to address the issue quickly to prevent further problems. DIY troubleshooting can include checking the septic tank for clogs, inspecting the drainfield for signs of failure, and ensuring the pump is functioning properly. However, for more complex issues or if you're unsure of the cause, it's best to call a professional septic system technician who can properly diagnose and repair the problem.