top of page
Water Drops

Legionella Testing
West London

Legionella Risk Assessment and Testing Services


For: All business properties within the M25 - Landlords, Hotels, Offices, Schools, Doctors Surgeries, Supermarkets, Restaurants, Nightclubs, Bars, Cocktail Lounges, Hospitals.

London's most dependent Legionella Risk Assessment and Testing Service.

North London | South London | East London | West London

You can protect your organisation, its employees, and its customers by conducting thorough Legionella testing.


Legionnaires' disease is a potentially lethal form of pneumonia caused by Legionella bacteria found in water. Legionella bacteria are responsible for the development of Legionnaires' disease.


Legionnaires' disease is more deadly to the elderly, the sick, and those who have weaker immune systems, among other groups.

Legionella bacteria can contaminate water tanks, air conditioners, plumbing systems, cooling towers, spray systems, hot tubs, hoses, other areas of a building, and appliances and other equipment. Stagnant water systems with temperatures ranging between 20 and 45 degrees Celsius are ideal for it to flourish.

Metro-Pat 247 Limited will safeguard your organisation from an outbreak by doing a complete risk assessment and offering assistance to ensure that you remain safe and compliant.

To verify that your water systems comply with British Standards and do not harbour Legionella, we will inspect them all.

A tailored action plan for your company will be developed by our LCA-certified engineers, who will also conduct a written review and ensure that you adhere to the L8 Approved Code of Practice. Interim health inspections can also be included in your service by Metro-Pat 247 Limited to assist you to keep an eye on your water systems and avoiding future problems.

With our electronic logbook system, we can provide quotes and services tailored to each organisation's requirements from any location.


Contact us to schedule your Legionella risk assessments by calling 0800 014 6728 

View our Google Profile

Metro-Pat 24/7 Ltd is the most trusted Legionella testing firm in West London.

Ensure the safety and compliance of your organisation.

What is Legionella Testing?

Legionella testing involves detecting the presence of Legionella bacteria in water sources. Legionella is a type of bacteria that can cause a severe respiratory illness called Legionnaires' disease, as well as a milder flu-like illness known as Pontiac fever.

Legionella bacteria thrive in water environments, more particularly in warm water systems like cooling towers, hot tubs, hot water tanks, and large plumbing systems. When the bacteria are aerosolized, such as through the release of tiny water droplets into the air, they can be inhaled by humans, leading to the risk of infection.

Legionella testing involves water testing and collecting water system samples from the suspected water sources or areas where the bacteria are likely to grow. These samples will then be analysed and undergo specific tests to determine the presence and concentration of Legionella bacteria in the samples. When it comes to legionella control, the team at Metro-PAT 247 have got you covered; all you need to do is get in touch with our team, who can answer any questions that you may have.

Do You Need a Legionella Risk Assessment?


Legionella risk assessments are provided in buildings and facilities to evaluate the potential risks associated with Legionella bacteria growth and transmission. It's essential when it comes to health and safety, as Legionella bacteria can cause a severe respiratory illness known as Legionnaires' disease.

If you own or manage a building or facility where water systems are present, such as hotels, hospitals, offices, or residential properties, it is advisable to consider a Legionella risk assessment. This assessment will help to identify any potential sources of Legionella growth; this can include hot water systems, cooling towers and water storage tanks. It also assesses the effectiveness of control measures in place that will prevent Legionella proliferation, as well as recommending the necessary actions to minimise the risk.

Legionella risk assessments will be carried out by qualified professionals who will follow established guidelines and regulations. It's important to remember that the person or company who will be conducting the assessment has all of the necessary expertise and experience.

If you have any specific questions or concerns about Legionella water testing and risk assessments, feel free to ask Metro-PAT 247; our health and safety executive team will be happy to answer any questions that you may have.

Legionella Risk Assessments from Metro-PAT 247


There are different testing methods used for Legionella detection, including:

  • Culture Testing: This method involves incubating water samples in a specialised way that promotes the growth of Legionella bacteria. After a certain period, technicians will examine the plates for the presence of characteristic colonies of Legionella.

  • Polymerase Chain Reaction (PCR) Testing: PCR is a molecular biology technique that increases and detects the genetic material (DNA) of Legionella bacteria. It will provide a rapid and sensitive method for identifying the bacteria in water samples.

  • Immunological Testing: This method detects specific antigens or antibodies produced by Legionella bacteria in water samples. It involves using specific antibodies that bind to Legionella antigens, producing a visible reaction that indicates the presence of the bacteria.

Legionella compliance and testing are typically conducted as part of water quality management plans and risk assessments in environments where Legionella growth is a concern; this can include hospitals, hotels, office buildings, and other large facilities. Regular testing helps to monitor the bacterial levels, identify potential sources of contamination, and implement appropriate control measures to prevent the spread of Legionella and minimise the risk of infection.

It is important to remember that Legionella testing should be provided by trained professionals, like Metro-PAT 247 or accredited laboratories, who will follow recognised protocols and standards. The results of the testing will decide on the necessary preventive measures that need to be taken; this can include regular cleaning and the disinfection of water systems as well as the maintenance of appropriate water temperatures and the use of water treatment methods to control the growth of Legionella bacteria.

bottom of page