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. Don't attempt to repair a failing system yourself. Get a repair permit from the Health Department and hire an experienced contractor. Signs of Possible Septic System Problems Sewage backing up into your toilets, tubs, or sinks. The smell of raw sewage accompanied by extremely soggy soil over sewage discharged over the ground or in nearby ditches or woods.