What should you do to prevent the discharge of untreated waste from a type one or type two marine sanitation device?

To prevent the discharge of untreated waste from a Type I or Type II marine sanitation device, ensure regular maintenance and inspection of the system to confirm it is functioning properly. Always monitor the device's indicators and alarms for any signs of malfunction. Additionally, adhere to local regulations regarding waste disposal and use the device only in designated areas where discharge is permissible. Lastly, educate crew members on the importance of proper operation and the environmental impacts of untreated waste discharge.