Having your septic system inspected yearly is a great way to prevent big problems before they even start. Inspections include measuring the levels of sludge and scum, checking the systems pipes and mechanisms and inspecting the drainfield to make sure it’s percolating the effluent properly. The EPA recommends that your septic system be pumped every one to three years.
How to know if your septic system needs pumped.
The only way to know for sure is to have your septic system inspected by a licensed and professional septic, sewer and drain company. When the floating scum layer is within 6 inches of the outlet pipe or the top of the sunken sludge layer is within 12 inches of it, it is recommended to pump it out to prevent costly problems.
Unfortunately, there is no additive that you can put in the tank that will remove the sludge. IT MUST BE PUMPED OUT!