Biological hazards in collection system operations include which of the following?

Biological hazards in collection system operations include which of the following?

• A. Noxious or toxic gases or vapors
• B. Oxygen deficiency
• C. Physical injuries
• D. Hepatitis A

Answer: (D)

Biological hazards come from living organisms or their disease-causing components. In wastewater collection work, pathogens can be present in sewage, making exposure a real concern. Hepatitis A is a virus that can be transmitted via contaminated sewage or materials and cause illness, so it fits squarely as a biological hazard. The other options describe non-biological hazards: noxious or toxic gases or vapors are chemical hazards; oxygen deficiency is an atmospheric/physical hazard related to the environment; physical injuries cover general safety risks but not biological agents. So Hepatitis A is the best choice because it specifically represents a disease-causing microorganism that workers can encounter in collection systems, whereas the others are not biological hazards. Protective measures include standard precautions, appropriate PPE, hygiene, and vaccination where advised.

Biological hazards come from living organisms or their disease-causing components. In wastewater collection work, pathogens can be present in sewage, making exposure a real concern. Hepatitis A is a virus that can be transmitted via contaminated sewage or materials and cause illness, so it fits squarely as a biological hazard.

The other options describe non-biological hazards: noxious or toxic gases or vapors are chemical hazards; oxygen deficiency is an atmospheric/physical hazard related to the environment; physical injuries cover general safety risks but not biological agents.

So Hepatitis A is the best choice because it specifically represents a disease-causing microorganism that workers can encounter in collection systems, whereas the others are not biological hazards. Protective measures include standard precautions, appropriate PPE, hygiene, and vaccination where advised.