WWT/Process Areas/TBT-WWT-026
Pathogen and Infection Risk at WwTW
Water & Wastewater Treatment › Process Areas › Pathogen and Infection Risk at WwTW
Toolbox Talk
Pathogen and Infection Risk at WwTW
Wastewater treatment works contain raw sewage carrying harmful bacteria, viruses, and parasites. Construction workers on these sites face infection risks from direct contact with sewage, contaminated surfaces, and airborne aerosols. Leptospirosis, hepatitis, and gastric infections are all real hazards. This talk covers the precautions every operative must follow to avoid infection when working at treatment works.
Key Hazards
Leptospirosis from contact with water contaminated by rat urine
Hepatitis A and E from ingestion of sewage-contaminated material
Skin infections from open wounds exposed to raw sewage
Respiratory illness from inhaling sewage aerosols near aeration tanks
Control Measures
- Ensure all cuts, grazes, and wounds are cleaned and covered with waterproof dressings before starting work.
- Wear full-length waterproof gloves and overalls when there is any risk of sewage contact.
- Wash hands thoroughly with antibacterial soap before eating, drinking, or smoking.
- Never eat, drink, or smoke in any area where sewage contamination may be present.
- Use RPE with P3 particulate filters when working near aeration tanks or sewage aerosol sources.
- Ensure hepatitis A vaccination is offered and up to date for all workers on wastewater sites.
- Store clean clothing and PPE separately from contaminated workwear at all times.
- Shower and change clothing before leaving the site at the end of each shift.
- Report any symptoms of illness such as fever, vomiting, or jaundice to your supervisor immediately.
Remember
- Cover all cuts and wounds with waterproof dressings before working near sewage
- Always wash hands with antibacterial soap before eating, drinking, or smoking
- Hepatitis A vaccination should be offered to everyone working at wastewater sites
- Never eat or drink in areas where sewage contamination could be present
- Report any symptoms of fever, vomiting, or jaundice to your supervisor without delay
- Contaminated workwear must be stored separately from clean clothing and PPE
Applicable Legislation: COSHH Regulations 2002 · Health and Safety at Work etc. Act 1974 · Management of Health and Safety at Work Regulations 1999 · Personal Protective Equipment at Work Regulations 1992
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