Professional Legionella Remedial Works Services Across the UK
If your legionella risk assessment has identified actions that need resolving, legionella remedial works are the next step — the corrective works that bring your water system back into a compliant, low-risk state.
At Titan, we specialise in delivering practical, effective legionella remedial works for commercial buildings, healthcare sites, educational facilities and industrial premises across the UK. From dead leg removals and pipework modifications to tank refurbishment and valve replacements, we know what’s required and how to deliver it with minimum disruption.
We are members of the Legionella Control Association and undergo annual audits to ensure we meet the highest service standards. We review your risk assessment, prioritise actions based on risk level, agree a practical programme of works, and deliver solutions that can be signed off with confidence during audits and inspections.
Nationwide Service
Legionella Remedial Works, Delivered Across the UK
Our head office is based just outside Liverpool, but our reach extends far beyond the North West. Through our trusted network of regional project teams, Titan delivers Legionella remedial works to sites right across the UK. Whether it’s a healthcare facility in Manchester, a leisure centre in Devon, or a commercial office block in central London, we’ve been there - and we’ve tackled the same compliance issues you’re likely dealing with now.
We understand that every site is different. That’s why we take the time to assess your specific risks, interpret your Legionella reports, and carry out targeted remedial actions that make a real difference. All works are completed in line with HSE guidance and ACOP L8, with full documentation provided to support audit trails, compliance reviews, and ongoing Legionella management.
Your Questions Answered
What Are Legionella Remedial Works?
Legionella remedial works are the corrective actions carried out to fix issues identified during a legionella risk assessment. Also referred to as ACOP L8 remedial works or water hygiene remedial works, they are designed to reduce or eliminate the conditions that allow legionella bacteria to grow and spread within your water system.
They can range from simple fixes - like removing a dead leg or adjusting pipework - to more involved interventions, such as tank replacements, improving insulation, or installing new valves and temperature controls. The goal is always the same: to help you comply with HSE’s ACOP L8 guidance and keep building users safe from Legionnaires’ disease.
Unlike routine monitoring or flushing, remedial works address the root cause of the problem. They bring your system back into a compliant, low-risk state - and reduce the likelihood of ongoing issues or repeat failures.
What's Involved in Legionella Remedial Works?
Once a risk assessment is conducted and risks are identified, it’s critical to remove or reduce them as far as is reasonably practicable. All actions listed in the risk assessment must be signed off to complete the process, and this is where our legionella remedial works come in. Remedial works usually focus on improving performance across both hot water systems and cold water systems, including calorifiers, water heaters, distribution pipework, and associated valves.
Every site is different, but Legionella remedial works often follow a clear process, based on your risk assessment and site conditions. Common works include:
Dead Leg and Redundant Pipework Removal
Unused pipework can harbour stagnant water - a key risk for Legionella. We identify and remove dead legs to restore safe flow throughout the system. For sites with complex pipework layouts, our dead leg piping service covers full identification, assessment and removal.
Pipework Modifications
Incorrect layouts, poor gradients, or cross-connections can create compliance issues. Our team redesigns and reworks pipework to meet current best practices and guidance.
Tank Refurbishment or Replacement
If your cold water storage tank is in poor condition or non-compliant, we can reline, refurbish, or replace it depending on what’s most appropriate for your site.
Valve and TMV Maintenance
We install, repair, and service thermostatic mixing valves (TMVs), strainers, and isolation valves - helping you maintain safe temperatures and prevent scalding or bacterial growth.
Insulation and Temperature Control
Maintaining correct hot and cold water temperatures is critical. We upgrade insulation, reposition pipes, and implement temperature controls to support system-wide compliance.
Cleaning, Disinfection, and Sampling
Following any works, we carry out thorough cleaning and chlorination, followed by microbiological sampling where needed - ensuring the system is clean, compliant, and ready for use.
Why Do I Need Water Hygiene Remedial Works?
Legionella remedial works are necessary to address any issues highlighted during a legionella risk assessment, annual audit, or routine inspection that don’t meet the standards set out in ACOP L8 and HSG274. These issues will be flagged in an exception report and must be corrected within a specific timeframe. The urgency of each issue is ranked to help prioritise the required actions.
How Long Will the Legionella Remedial Works Take?
Our engineers aim to complete legionella remedial work with minimal disruption to your operations. The duration of the job will depend on factors such as ease of access to the site and the scope of the necessary repairs. Please contact our team to discuss your specific situation for a more precise estimate.
What Should I Do After the Legionella Remedial Works Are Completed?
After remedial works are completed, it’s essential to accurately record the details of the works completed, and just as crucially, the works that could not be completed. A detailed photographic completion report like this example is important to ensure you for demonstrable evidence of compliance.
Once works are complete, ongoing monitoring is essential to confirm that control measures are working and risks remain under control. Our water hygiene monitoring service can support this, providing consistent records and helping you stay compliant between assessments.
What Our Clients Say
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10 Benefits of Using Independent Experts for Your ACOP L8 Remedial Works
1. Full Compliance with Regulations
Specialist contractors understand the latest HSE guidance and ACOP L8 requirements inside out. They’ll ensure all remedial works are carried out to current standards, keeping your organisation legally compliant and audit-ready.
2. Thorough Risk Mitigation
Professionals know where Legionella bacteria hide and thrive. From dead legs and stagnant zones to poorly lagged pipework, they spot the issues general contractors often miss - and fix them properly first time.
3. Tailored, Evidence-Based Solutions
Rather than using a one-size-fits-all approach, a specialist will assess your system and recommend bespoke corrective actions that reflect the specific risks on your site. That means better outcomes and more efficient use of your budget.
4. Minimal Disruption to Operations
Experienced contractors know how to carry out Legionella remedial works in live environments such as hospitals, schools, care homes, factories, without major downtime. They’ll coordinate with your teams to avoid unnecessary disruption.
5. Built-In Long-Term Value
Getting it right the first time avoids costly repeat visits, fines, or reputational damage. Specialists also futureproof your system by advising on good design and maintenance principles to help reduce risk over time.
6. Accurate Documentation and Certification
Specialist contractors provide detailed post-remedial reports and certifications that can be presented during audits or inspections. You get peace of mind - and a paper trail that proves you're meeting your responsibilities.
7. Expert Knowledge of Water Systems
Legionella is rarely an isolated issue. It’s usually a symptom of wider system design flaws. Professionals with a mechanical background understand how flow, temperature and pressure affect bacterial growth - and how to fix it.
8. Safer Outcomes for Building Users
The right remedial work directly reduces risk for your staff, customers, residents or students. That’s not just compliance - it’s a duty of care. A specialist helps you uphold that responsibility without compromise.
9. Access to the Right Tools and Methods
From thermal imaging to smart system mapping, experienced contractors use proven techniques to identify and resolve issues efficiently. No guesswork, no temporary fixes - just proper remediation that lasts.
10. Ongoing Support and Maintenance Advice
Legionella control is an ongoing responsibility. After remedial works are complete, specialists can help you implement monitoring, cleaning and maintenance plans to keep your water safe moving forward.
Frequently Asked Questions
What are Legionella remedial works?
Legionella remedial works are the corrective actions carried out to address risks identified during a legionella risk assessment. They are designed to remove or reduce the conditions that allow legionella bacteria to grow within a water system, bringing it back into a compliant, low-risk state in line with ACOP L8 requirements.
Are Legionella remedial works a legal requirement?
Remedial works themselves are not automatically required by law, but acting on the findings of a Legionella risk assessment is. If risks or non-compliances are identified, dutyholders are required to take reasonably practicable steps to control or reduce those risks. Failing to complete necessary remedial works can leave organisations non-compliant with health and safety legislation and exposed to enforcement action.
How do I prioritise Legionella remedial works?
Remedial works are usually prioritised based on risk. Actions that present an immediate or higher risk to health are addressed first, while lower-risk issues may be planned into a longer-term programme. Risk assessments typically rank actions by urgency, and experienced contractors will help interpret these findings, taking into account how the building is used, occupancy levels, and operational constraints.
What common issues require Legionella remedial works?
Common issues that often require remedial works include dead legs and redundant pipework, poor temperature control, incorrectly installed or failing TMVs, inadequate insulation, poorly maintained tanks, and incorrect pipework layouts.
These issues can create stagnant water, reduce thermal control, or make systems difficult to manage effectively, increasing the risk of Legionella growth.
What happens if Legionella remedial works are not completed?
If remedial works are not completed, the underlying risks within the water system remain unresolved. This can increase the likelihood of Legionella growth and leave the organisation non-compliant with its legal duties.
Incomplete actions may also be highlighted during audits or inspections, potentially leading to enforcement action, reputational damage, or increased risk to building users.
How do remedial works support long-term Legionella control?
Legionella remedial works address the root causes of risk within a water system, rather than relying solely on monitoring or temporary control measures. By removing dead legs, correcting pipework layouts, improving insulation, and restoring temperature control across hot and cold water systems, remedial works reduce the conditions that allow Legionella bacteria to grow. When combined with ongoing monitoring, cleaning, and maintenance, remedial works form the foundation of effective long-term Legionella control.
Speak To One Of Our Experts About Legionella Remedial Works
If you need legionella remedial works carried out at your site, or want help interpreting the findings from your risk assessment, contact our team. We deliver ACOP L8 remedial works for commercial buildings, healthcare sites, educational facilities and industrial premises across the UK. Our engineers will review your report, prioritise the actions, and agree a practical programme that gets your system back into compliance.
Case Studies
Take a deep dive into some of the hundreds of Legionella remedial work projects we deliver across the UK every year, offering a glimpse into the challenges faced and the innovative strategies our team have employed to deliver excellence for our customers.
A Beginners Guide to Legionella Remedial Works
Watch as our MD Marc Fitzpatrick gives you a crash course in the world of Legionella remedial works in under 1 minute!
How Much Do Legionella Remedial Works Cost?
This is one of the first questions we get asked, so here is a simple explanation of the variables involved and the costs you can expect when instructing a specialist to complete your Legionella remedial works.
