Mould in Hospitals: The Hidden Risk with Significant Health and Cost Implications
Mould in hospital environments is often addressed only once it becomes visible. However, by the time mould can be seen, the underlying problem is typically well established, increasing both health risks and remediation costs.
We are currently examining mould issues across hospitals throughout Western Australia, with a focus on understanding not only the scale of the problem, but also how it can be addressed more effectively and proactively.
Why Visible Mould Is Already Too Late
Mould spores are microscopic and easily airborne. They can circulate through indoor environments and air-handling systems long before any visible mould growth appears. Despite this, intervention is frequently delayed until mould becomes visible on surfaces such as ceilings, walls, or air vents.
This delay matters. Exposure to airborne mould spores has been linked to a range of health concerns, particularly in hospital settings where patients may already be vulnerable. From an infrastructure perspective, waiting until mould is visible often means the contamination has spread more widely, making remediation more complex and costly.
The Financial Impact of Mould Remediation
In Australia, professional mould remediation can range from hundreds to many thousands of dollars in standard buildings, depending on the severity and extent of the infestation. In hospitals, costs escalate rapidly due to the need for specialised containment, infection control protocols, and air-handling system interventions.
In Queensland, a major hospital recently required a remediation program exceeding $2 million to address extensive mould contamination within its built infrastructure and air systems. This example highlights how quickly costs can escalate once mould becomes widespread.
Evidence from Hospital-Based Research
As part of a large Queensland hospital study, we were able to eliminate all detectable mould within one month. The study has now progressed to Phase 2, demonstrating that the absence of mould can be sustained over time.
These findings suggest that earlier, targeted intervention can significantly reduce both the duration and cost of mould-related issues in complex healthcare environments.
A Proactive Alternative Approach
The prevailing approach to mould management is reactive — responding once visible signs appear. However, growing evidence indicates that proactive strategies focused on early detection and intervention may offer a more effective solution.
By addressing mould at a microscopic level, before it becomes visible, it may be possible to:
- Reduce health risks to patients, staff, and visitors
- Avoid large-scale remediation programs
- Achieve substantial cost savings
- Minimise disruption to hospital operations
Importantly, this approach has the potential to deliver these benefits without adding cost or operational strain to the health system.
Raising Awareness and Encouraging Collaboration
We are actively raising awareness of mould-related risks and alternative management strategies through multiple communication channels. Collaboration and shared knowledge are essential to improving outcomes in this area.
If this topic is of interest, we welcome the opportunity to discuss our approach further via a video call. Additionally, if you are aware of mould concerns within Western Australian hospitals, we would appreciate hearing from you.