From compliance to prevention: how IoT is strengthening Legionella control across healthcare estates

Reports of a cluster of Legionnaires’ disease cases under investigation in London earlier this year have once again highlighted the importance of effective water safety management. While the causes remain under investigation, incidents like these serve as a reminder that controlling Legionella risk requires continuous vigilance, particularly within healthcare environments where vulnerable patients may be at greater risk.

For estates and facilities teams, managing water safety is far more than a compliance exercise. It is a critical part of protecting patients, staff and visitors. Yet achieving consistent oversight across large and often ageing healthcare estates remains a significant challenge.

The challenge of managing complex water systems

Many NHS estates have evolved over decades, resulting in a mix of buildings, plumbing systems and infrastructure of varying ages. Large hospital campuses can contain hundreds, or even thousands, of outlets requiring regular monitoring.

Legionella risk management is governed by a robust framework designed to protect building occupants. The Health and Safety Executive’s Approved Code of Practice (ACOP L8) provides the overarching requirements for controlling Legionella bacteria in water systems, supported by HSG274 technical guidance. Within healthcare environments, these principles are further reinforced by HTM 04-01, which sets out specific guidance for the safe management of healthcare water systems.

Alongside these frameworks, many organisations also look to standards and best practice promoted by the Legionella Control Association (LCA), which plays an important role in supporting consistent approaches to Legionella risk management across the industry.

To meet these requirements, organisations must carry out routine temperature monitoring, flushing regimes and maintain comprehensive records. Traditionally, this has relied heavily on manual processes, with engineers visiting outlets to take readings and record compliance activities.

A shift towards continuous monitoring

Internet of Things (IoT) technology is helping healthcare organisations move beyond periodic inspections towards continuous visibility of water system performance.

By installing sensors throughout water systems, estates teams can monitor conditions such as temperature, flow and outlet usage in real time. If readings fall outside predefined thresholds, alerts can be generated immediately, enabling teams to investigate and take corrective action before issues escalate.

This represents a fundamental shift from reactive compliance to proactive risk management. Rather than discovering problems during scheduled inspections, teams can identify and address potential risks as they develop.

The result is greater confidence in system performance and improved visibility across the estate.

Supporting overstretched estates teams

For healthcare estates teams already managing ageing infrastructure, maintenance backlogs and increasing regulatory responsibilities, digital monitoring can also deliver significant operational benefits.

Automating routine data collection reduces the burden of manual checks and record keeping. Instead of compiling spreadsheets and paperwork, teams can access live information through centralised dashboards, with readings and compliance records captured automatically.

This creates robust audit trails while freeing engineers to focus on investigation, maintenance and problem-solving activities rather than administrative tasks.

Continuous monitoring also enables smarter prioritisation. Real-time insights help identify the areas of greatest concern, allowing resources to be directed where they can have the biggest impact.

At a time when many healthcare organisations are being asked to do more with less, this can provide a valuable means of improving efficiency without compromising safety.

Better visibility, better collaboration

Effective Legionella control requires collaboration between estates teams, infection prevention and control specialists, risk managers and senior stakeholders.

When water system data is centralised and easily accessible, these groups can work from a shared understanding of risk. Temperature anomalies, low-usage outlets and other potential concerns can be identified quickly and discussed using current information rather than historic reports.

This joined-up approach supports better decision-making and allows organisations to respond faster when issues arise.

Building safer healthcare environments

As healthcare estates continue to modernise, connected technologies are playing an increasingly important role in supporting compliance with ACOP L8, HSG274 and HTM 04-01, while helping organisations adopt a more proactive approach to water safety management.

IoT-enabled monitoring provides continuous assurance rather than periodic reassurance. By combining real-time visibility, automated reporting and proactive alerts, healthcare organisations can strengthen governance, support best practice aligned with LCA guidance, and reduce operational pressures on estates teams.

The goal is not to replace human expertise, but to enhance it. By providing the right information at the right time, technology enables facilities professionals to make informed decisions and take preventative action before small issues become significant risks.

Authored by Becky Allen, Healthcare Solutions Lead, MRI Software

The post From compliance to prevention: how IoT is strengthening Legionella control across healthcare estates appeared first on FMJ.