By then, the drainfield may be ruined. Aerobic treatment unit systems. Some other complex systems. Be sure the pump, electrical controls, floats, and alarm on your LPP, ATU, pump to conventional, or pressure manifold system continue working properly between scheduled maintenance visits. Work carefully and safely.
Sewage contains germs that can cause diseases.
Never enter a septic tank. Toxic and explosive gases in the tank present a hazard. Old tanks may collapse. Electrical controls present a shock and spark hazard. Secure the septic tank lid so that children cannot open it.