How is infectious waste disposed of through a sewage system?

The disposal of infectious waste through a sewage system must adhere to strict regulations designed to protect public health and the environment. Discharging infectious waste into a sanitary sewage system or a septic tank is considered the appropriate method because these systems are designed to handle biological waste safely. The sewage treatment process includes various stages that effectively reduce pathogens and contaminants, allowing for safe release into the environment after treatment.

In contrast, methods such as steam sterilization and irradiation are associated with the treatment of infectious waste before disposal, rather than disposal through the sewage system. A secure storage area indicates a temporary holding solution for waste, not a method of disposal. Therefore, the correct answer reflects established practices for handling infectious materials in a way that minimizes risk and ensures compliance with health and safety standards.