Legionella Compliance

As a leading expert in Legionella management, HTS is fully equipped to handle all aspects of water hygiene and compliance to control the spread of legionella control.
Our team has a strong, proven track record across various sectors, including education, Healthcare, Housing, Facilities Management, and the retail industry.
Our Legionella Compliance Services include, but are not limited to:
- Temperature monitoring
The requirement for legionella control in hot and cold water systems is detailed in the HSE document ‘Legionnaires’ disease. The control of legionella bacteria in water systems’. This document, often referred to as ACOP L8, is the approved code of practice and guidance. - Shower descale and disinfection
The requirement for Legionella control in hot and cold water systems is detailed in the HSE document ‘Legionnaires’ disease. The control of legionella bacteria in water systems’. This document, often referred to as ACOP L8, is the approved code of practice and guidance on regulations. - TMV Servicing and Testing
In order to control the growth of Legionella bacteria within hot and cold water systems, as required by the Health and Safety Executive (HSE), Health and Safety Guidance (HSG) and Healthcare Technical Memorandum (HTM), thermostatic mixer valves (TMVs) need to be maintained annually by qualified professionals in accordance with the manufacturer’s guidelines. - Legionella Sampling
Our UKAS accredited testing ensures that your water systems meet the highest standards of safety and compliance, giving you peace of mind while helping you stay ahead of potential risks. No matter where you’re located in the UK, our team is ready to support you in maintaining a safe and compliant environment. - Planned Preventative Maintenance (PPM) water hygiene contract
Do I need a PPM contract?
We’re here to help you comply with ACOP L8, the approved code of practice and regulatory guidance. With a PPM contract, you can relax knowing we handle everything for you. - Remedial Works
We can help bring your systems up to standard and ensure compliance with the Water Fittings Regulations 1999 (WRAS) and ACOP L8 through our comprehensive mechanical services. This includes tasks such as installing new water tanks or removing outdated, unused sections of pipework. - RPZ Valve Servicing
With a team of national RPZ valve testers and certifiers across the country, we are ready to assist you in meeting the requirements of your local water authority for RPZ valve testing.
FAQs
Legionella is a type of bacteria that can cause a severe form of pneumonia known as Legionnaires’ disease, as well as a milder illness called Pontiac fever. The bacteria thrive in warm, stagnant water, such as in plumbing systems, water tanks, cooling towers, and hot tubs. People can contract Legionnaires’ disease by inhaling water droplets or mist that contains the bacteria, often through showers, taps, or air- conditioning systems.
Legionella bacteria can be particularly dangerous for individuals with weakened immune systems, the elderly, and people with underlying health conditions.
Preventing its spread typically involves regular water system maintenance,
temperature control, and Legionella testing to ensure that systems are clean and safe.
People can contract Legionnaires’ disease by inhaling tiny water droplets or mist that contain Legionella bacteria. This usually happens when the bacteria grow in warm,
stagnant water systems such as:
- Showerheads or taps
- Hot tubs or spas
- Cooling towers in air-conditioning systems
- Fountains or decorative water features
- Plumbing systems in buildings, especially when water temperatures are not properly controlled
The bacteria do not spread from person to person. Instead, it’s the inhalation of the contaminated water droplets, often in the form of mist or vapor, that leads to infection.
Those at higher risk include the elderly, smokers, people with weakened immune systems, and individuals with chronic lung conditions.
Legionella compliance helps reduce the risk of Legionella by ensuring water systems are properly maintained and monitored. Key measures include conducting regular risk assessments, controlling water temperatures, using water treatments, performing routine testing, preventing stagnation, and training staff. These steps help prevent Legionella growth, safeguard public health, and minimise legal and financial risks.
Yes, Legionella compliance is a legal requirement in many countries, including the UK. Under the Health and Safety at Work Act 1974 and the Control of Substances Hazardous to Health (COSHH) Regulations, employers and building owners are legally obligated to assess and manage the risk of Legionella in water systems. This includes regular risk assessments, implementing control measures, maintaining systems, and keeping records. Failure to comply can result in fines, legal action, and, in some cases, severe health consequences.


