The EPA recommends that a septic tank should be inspected every two to three years, with mechanical pumping typically required every three to five years to empty the tank. Septic systems that are undersized or that see very heavy use may require pumping annually. Some systems have electrical float switches, pumps, or mechanical components, and these need to be inspected more often — typically once each year. Pumping is the process of removing sludge from the bottom of the septic tank, and this needs to be done before the sludge builds up to a level where it blocks the outlet pipe through which liquids flow into the drain field.
A septic tank pump-out is a maintenance procedure involving the removal of accumulated solids, sludge, and scum from a septic tank. This process is essential to prevent the buildup of waste that can lead to system malfunctions and backups.