It means that it contains pathogenic germs. That can cause an infection. Requiring disinfection. In Sanitary Engineering, it is a type of well or pit where sewage accumulates or discharges.
Relating to sepsis or sepsis, which causes infection because it contains pathogenic germs. From Greek 963; 951; 960; 969; (sépoo "to rot, decompose") the suffix 953; 954; 959; 962; (-ikos "relating to") .