A septic tank is an underwater sedimentation tank used for wastewater treatment, biological decomposition, and drainage. Septic tanks allow safe disposal of wastewater and are widely popular in areas that have poor drainage systems or are off the main sewage network. We dig up the tank or pump through a riser to remove all sludge and solids. We have paddles to get all the sludge out of the tank. Other companies insert a vacuum hose in the tank and only suck out the liquids (pumping). But the only right way is to remove all liquids and solids from the tank (cleaning). This is the way we do it.