Pumping your septic tank is one of the most important parts of septic system maintenance. Solids will build up in your septic tank over time, and if they’re not emptied out, they can seep into your yard or back up your pipes into your home. Most homeowners with septic tanks understand the importance of septic tank pumping, but do you know what is actually being pumped out of your tank? We’ve broken it down for you below.