The roots from the plants could damage the system. Don't cover the drainfield with a hard surface such as concrete, asphalt above ground pools or decks. The area should have only a grass cover. Don't repair your septic system without checking with the health department to see if you need a permit. Don't overuse a kitchen garbage disposal unit.
Heavy use adds large quantities of solids and shortens the time between septic tank pumpings.
Don't use commercial septic tank additives. These products usually do not help and some may hurt your system in the long run. Don't use your toilet like a trash can or poison your septic system and the groundwater by pouring harmful chemicals and cleansers down the drain. Harsh chemicals can kill the beneficial bacteria that treat your wastewater. These items can overtax or destroy the biological digestion taking place within your system.