With Tropical Cyclone Alfred no longer a threat, Brisbane is facing major clean-up efforts after widespread flooding inundated suburbs. As residents return to assess the damage, authorities are warning about the health risks associated with floodwaters, particularly the potential for rare but serious bacterial infections.
Read: Wavell Heights Road Closure Reinforces Benefits of Automated Flood Alerts
Sewage Contamination in Wavell Heights
In some areas, floodwaters have mixed with sewage, increasing the risk of infection. A resident of Wavell Heights shared their concerns in a private Facebook group, stating, “The footbridge and surrounding areas along the Cressey Street drain has been the scene of a poonami with loads of raw sewage spilling during the recent flooding.”
Queensland Health has reinforced the dangers, reminding people to stay away from floodwaters due to contamination from human waste, industrial chemicals, and hidden hazards like sharp objects and wildlife.
Risks of Bacterial Infections
Among the serious health risks is melioidosis, an infection caused by Burkholderia pseudomallei, a bacterium commonly found in soil and water in tropical regions. The bacteria, usually deep underground, can be stirred up by heavy rains and floods, posing a risk to humans through skin wounds, inhalation, or ingestion of contaminated water.
Queensland Health warned that exposure to polluted water can lead to various illnesses, including:
- Diarrhoea and vomiting
- Wound infections
- Dermatitis
- Conjunctivitis
- Potentially fatal diseases such as leptospirosis and melioidosis
Safety Precautions
To reduce the risk of infection, authorities have provided key safety recommendations:
- Avoid wading through floodwaters, even if they appear shallow.
- Wear protective footwear, such as solid boots or shoes (not thongs), if entering floodwaters is unavoidable.
- Use gloves when handling objects contaminated by floodwater.
- Wash hands thoroughly with soap and water before eating and after any contact with floodwater or soil.
- Clean household surfaces and items that were exposed to floodwaters to prevent bacterial spread.
Read: Norths Rugby Club Avoids Serious Damage From Cyclone Alfred
Experts also highlight that flood-related health risks extend beyond bacteria, with potential injuries from submerged debris, animal bites, and even venomous creatures lurking in the water.
As Queensland works to recover from the floods, residents are urged to stay informed, take precautions, and follow official health advice to avoid preventable illnesses and injuries.
Published 12-March-2025
