Legionella Tank Cleaning: Ensuring Safety and Compliance in Commercial Properties

Legionella Tank Cleaning

Legionella tank cleaning plays a crucial role in maintaining the health and safety standards of commercial properties in the UK. Legionella bacteria are responsible for causing Legionnaires’ disease, a severe form of pneumonia that can lead to serious illness and even death. These bacteria thrive in water systems, including storage tanks, and can be easily transmitted through contaminated water droplets.

In commercial properties, such as hotels, hospitals, office buildings, and leisure facilities, where large water storage tanks are commonly used, regular Legionella tank cleaning and maintenance are essential to prevent the growth and spread of Legionella bacteria. Here are some key reasons why understanding the importance of Legionella tank cleaning is vital.

Researcher Is Analyzing Legionella In Test Tube With Blood.

Health and Safety Compliance: Compliance with health and safety regulations is paramount for commercial property owners and managers. In the UK, the Health and Safety at Work Act, along with the Control of Substances Hazardous to Health (COSHH) regulations, outline the legal obligations for controlling the risk of Legionella. Regular cleaning and disinfection of water storage tanks are necessary to meet these requirements and ensure a safe environment for employees, guests, and visitors.

Preventing Legionnaires’ Disease Outbreaks: Legionnaires’ disease can have severe consequences for individuals exposed to contaminated water sources. By implementing a robust tank cleaning and maintenance regime, commercial property owners can significantly reduce the risk of Legionella proliferation. Regular cleaning helps eliminate biofilm, sediment, and other organic matter that can serve as nutrients for bacterial growth, minimising the chances of a Legionnaires’ disease outbreak.

Protecting Reputation and Liability: Legionnaires’ disease outbreaks can have a detrimental impact on a commercial property’s reputation. News of an outbreak can spread rapidly, leading to negative publicity, loss of trust, and potential legal implications. By prioritising Legionella tank cleaning, property owners demonstrate their commitment to safeguarding the health and well-being of occupants, employees, and customers, protecting their reputation and reducing liability risks.

Mitigating Financial Losses: Dealing with a Legionella outbreak can result in significant financial losses for commercial properties. The costs associated with medical treatments, legal claims, fines, increased insurance premiums, and property closure can be substantial. Routine tank cleaning, coupled with water quality testing and maintenance, helps prevent outbreaks, reducing the financial burden associated with such incidents.

Ensuring Water Quality: Clean and uncontaminated water is crucial for a wide range of commercial activities. From providing safe drinking water to supporting various processes and operations, maintaining high water quality is vital. Legionella tank cleaning helps remove potential sources of contamination, ensuring the water stored in these tanks remains safe for consumption and other uses.

To ensure effective Legionella tank cleaning, it is advisable to engage professional water hygiene specialists who have expertise in assessing, cleaning, and maintaining water systems. These specialists can develop tailored cleaning and disinfection schedules, conduct risk assessments, and provide guidance on implementing preventive measures.

Understanding the importance of Legionella tank cleaning is paramount for commercial properties in the UK. By prioritising regular cleaning and maintenance, property owners and managers can mitigate health risks, comply with regulations, protect their reputation, and ensure the well-being of everyone within their premises.

Exploring the Challenges Involved in Legionella tank cleaning

Legionella bacteria, particularly the strain known as Legionella pneumophila, can pose a serious threat to human health. This bacterium is responsible for causing Legionnaires’ disease, a severe form of pneumonia that can be fatal if left untreated. One common source of Legionella contamination is water systems, including water storage tanks and cooling towers. As a result, effective cleaning of these systems is crucial to prevent the spread of the bacteria and ensure public safety.

However, Legionella cleaning is a complex task that presents several challenges. The first challenge lies in the nature of Legionella bacteria itself. These bacteria can thrive in a wide range of environmental conditions, including temperatures between 20°C and 45°C (68°F to 113°F). They can form biofilms, which are slimy layers that protect them from disinfectants and make their eradication difficult. Additionally, Legionella bacteria can survive in low-nutrient environments, allowing them to persist even in systems with limited organic matter.

Another challenge is the presence of various surfaces and structures within water systems, such as storage tanks and pipes. These surfaces often have hard-to-reach areas, dead ends, and corners where Legionella bacteria can accumulate and multiply. The biofilms they form can act as reservoirs, continuously releasing bacteria into the water flow and increasing the risk of contamination.

Why Professional Assistance is Crucial for Effective Legionella tank cleaning

Given the challenges involved in Legionella cleaning, seeking professional assistance becomes crucial for ensuring effective results. Professional cleaning companies specialising in Legionella control possess the expertise, knowledge, and equipment necessary to tackle this task efficiently.

Professional cleaners are trained in identifying potential sources of Legionella contamination and assessing the risk level in water systems. They can conduct thorough inspections and implement appropriate cleaning and disinfection protocols tailored to the specific system. Moreover, they are equipped with advanced tools and technologies to reach inaccessible areas, ensuring comprehensive cleaning and disinfection.

Chemicals and Hard Work: The Core of Legionella Tank Cleaning

Legionella tank cleaning in the UK typically involves the use of specialised chemicals and a combination of mechanical and manual cleaning methods. Chlorine-based disinfectants, such as sodium hypochlorite, are commonly used for their effectiveness against Legionella bacteria. These chemicals can penetrate biofilms and kill the bacteria, helping to eliminate the contamination.


Chemicals play a crucial role in the disinfection and elimination of Legionella bacteria, particularly in the context of cleaning and maintaining water systems. Legionella bacteria are known to thrive in warm water environments such as hot water tanks, cooling towers, and plumbing systems. To prevent the spread of Legionnaires’ disease, which is caused by inhaling small droplets of contaminated water containing Legionella bacteria, it is essential to employ effective disinfection strategies.

One commonly used chemical for Legionella control is chlorine. Chlorine-based disinfectants, such as chlorine dioxide and sodium hypochlorite, are effective in killing Legionella bacteria. These chemicals work by disrupting the bacterial cell wall and interfering with essential metabolic processes, leading to the bacteria’s death. Chlorine-based disinfectants are often used in cooling towers, hot water systems, and other water treatment applications to control Legionella growth.

Another chemical agent used for Legionella control is monochloramine. It is created by combining chlorine with ammonia and is effective in preventing the growth of Legionella bacteria in water systems. Monochloramine has the advantage of providing longer-lasting disinfection compared to free chlorine, as it forms a more stable residual in the water. This residual can continue to protect against bacterial regrowth in the system over an extended period.

In addition to chlorine and monochloramine, other chemical treatments like copper-silver ionisation and chlorine dioxide generators are also used for Legionella control. Copper-silver ionisation involves the use of an ionisation system that releases low levels of copper and silver ions into the water, which can effectively inhibit Legionella growth. Chlorine dioxide generators produce chlorine dioxide gas, which acts as a broad-spectrum biocide and can eliminate Legionella bacteria.

The Legionella tank cleaning process often begins with draining the water system and removing any sediment or debris present in the tank. Mechanical cleaning methods, such as high-pressure water jetting or brushing, may be employed to dislodge biofilms and remove stubborn deposits. Once the tank is physically cleaned, the disinfection process begins. The tank is treated with the appropriate concentration of disinfectant, ensuring that all surfaces and components are thoroughly coated.

After disinfection, the system is flushed and refilled with clean water. Regular monitoring and testing for Legionella bacteria are essential to verify the effectiveness of the cleaning process and ensure ongoing control. It is worth noting that compliance with the UK’s Health and Safety Executive’s Approved Code of Practice (ACOP L8) is necessary to meet legal obligations and maintain a safe environment.

Legionella cleaning presents various challenges due to the resilience of the bacteria and the complex structures of water systems. Seeking professional assistance is crucial to effectively combat Legionella contamination. Professional cleaners possess the necessary expertise and equipment to address these challenges, employing chemicals and a combination of mechanical and manual cleaning methods. By prioritising thorough cleaning and regular monitoring, the risk of Legionella bacteria and associated health risks can be significantly reduced in the UK and beyond.

Given the labour-intensive nature of tank cleaning, it is often necessary to have trained professionals or specialised cleaning companies carry out this task. They have the expertise, equipment, and knowledge to perform the cleaning and disinfection procedures in a safe and effective manner.

Identifying Potential Risks Associated with Legionella tank cleaning

It is essential to be aware of the potential risks associated with Legionella cleaning and take appropriate measures to ensure safety.

Inhalation of Contaminated Aerosols: During the cleaning process, high-pressure water jets or other mechanical methods are often used to remove biofilms and sediment from surfaces. This action can generate aerosols containing Legionella bacteria, which can be inhaled and cause respiratory infections. Inhalation is the most common route of exposure to Legionella, making it vital to implement appropriate safety measures.

Skin and Eye Contact: Direct contact with water contaminated with Legionella bacteria can also lead to infections. Skin and eye contact can occur during cleaning procedures or while handling equipment or water samples. It is essential to protect the skin and eyes from exposure to contaminated water to prevent infection.

Chemical Hazards: Cleaning agents and disinfectants used during Legionella cleaning can pose hazards if not handled properly. Some chemicals may be corrosive, toxic, or irritants, requiring careful handling, appropriate dilution, and protective measures.

The Significance of Proper Personal Protective Equipment (PPE) and Respiratory Protective Equipment (RPE)

To ensure the safety of workers involved in Legionella cleaning, the use of proper personal protective equipment (PPE) and respiratory protective equipment (RPE) is of paramount importance. Here are some key considerations:

PPE: Workers should wear appropriate PPE to protect themselves from exposure to Legionella-contaminated water. This includes wearing gloves, waterproof coveralls, and safety goggles or face shields to prevent skin and eye contact. PPE should be of sufficient quality and properly fitted to provide an effective barrier against potential contamination.

RPE: Respiratory protective equipment is crucial for preventing the inhalation of Legionella-contaminated aerosols. Depending on the specific cleaning procedures and risk assessment, respiratory protection such as face masks, respirators, or powered air purifying respirators (PAPRs) may be necessary. The choice of RPE should consider the level of exposure and the specific hazards associated with the cleaning process.

Given the potential risks involved in Legionella tank cleaning, seeking expert assistance is highly recommended, particularly in the United Kingdom where regulatory requirements are stringent. Professional water hygiene companies specialise in Legionella risk assessments, cleaning, and maintenance of water systems. Expert assistance for Legionella tank cleaning in the UK offers several benefits:

Compliance with Regulations: Legionella control in the UK is governed by regulations such as the Health and Safety at Work Act, Control of Substances Hazardous to Health (COSHH) regulations, and the Approved Code of Practice (ACOP) L8. Water hygiene professionals are well-versed in these regulations and can ensure compliance during the cleaning process.

Risk Assessment and Management: Experts can conduct thorough risk assessments to identify potential hazards and develop appropriate control measures. This helps in tailoring the cleaning process to the specific requirements of each water system, ensuring effective removal of Legionella bacteria.

Safe and Effective Cleaning Procedures: Water hygiene specialists have the expertise, experience, and knowledge of best practices to carry out Legionella tank cleaning safely and effectively. They understand the proper use of equipment, cleaning agents, and disinfectants, minimising the risks associated with Legionella exposure.

Ongoing Maintenance: Legionella control is not a one-time activity but requires ongoing monitoring and maintenance. Expert assistance can provide regular inspections and maintenance to ensure the long-term safety of water systems, preventing Legionella proliferation.

Identifying potential risks associated with Legionella cleaning is crucial to implement appropriate safety measures. The use of proper personal protective equipment (PPE) and respiratory protective equipment (RPE) is vital to protect workers from exposure to Legionella bacteria. Seeking expert assistance for Legionella tank cleaning in the UK ensures compliance with regulations, effective risk management, and safe cleaning procedures.

Safety Precautions for Legionella Tank Cleaning

Legionella tank cleaning like any other task involving hazardous substances, comes with certain safety risks. It is important to take appropriate precautions to protect the health and safety of workers involved in the cleaning process. Here are some key safety considerations:


Personal Protective Equipment (PPE): Workers should wear suitable PPE, including gloves, goggles, masks, and protective clothing, to minimise the risk of exposure to chemicals and potential aerosols containing Legionella bacteria.

Risk Assessment: A thorough risk assessment should be conducted before starting the cleaning process to identify potential hazards and establish appropriate control measures.

Plan of Work: A bespoke and detailed plan of work which explains exactly how the works are to proceed, what equipment and chemicals to use and sign off measures for completed works.

Training: Workers involved in Legionella tank cleaning should receive adequate training on the risks associated with Legionella bacteria and the safe handling and use of cleaning chemicals. They should also be trained in proper cleaning techniques and emergency procedures.

Ventilation: Adequate ventilation should be ensured during the cleaning process to minimise the concentration of airborne particles and fumes.

Lockout/Tagout: Proper lockout/tagout procedures should be followed to isolate the tank from the water system and ensure that it is safe for cleaning.

Disposal: Proper disposal procedures for cleaning chemicals, contaminated materials, and wastewater should be followed to prevent environmental contamination.

Monitoring: Regular monitoring and testing of water systems should be carried out to verify the effectiveness of cleaning and disinfection procedures and to ensure that Legionella levels remain within acceptable limits.

By following these safety precautions and guidelines, the risks associated with Legionella tank cleaning can be minimised, providing a safe working environment for the workers involved while effectively controlling Legionella bacteria in water systems.

Specialist Remediation Solutions (SRS) and Our Expertise with Legionella tank cleaning

Specialist Remediation Solutions (SRS) is a leading provider of comprehensive remediation services, specialising in Legionella tank cleaning and prevention. With years of experience and a team of highly skilled professionals, SRS is committed to ensuring safe and effective remediation solutions for its clients in the UK.

At SRS, we understand the importance of maintaining a clean and healthy environment, particularly when it comes to preventing Legionella contamination. Legionella bacteria, known to cause Legionnaires’ disease, can proliferate in various water systems, including cooling towers, hot and cold water systems, and even decorative fountains. Therefore, it is crucial to have a thorough and effective Legionella tank cleaning process in place to eliminate any potential risks. Contact us today to see how we can help you with Legionella tank cleaning.

Leave a comment

Get a fast and free Quote Today!

If you're looking for a trusted and reliable solution to your remediation concerns, look no further than Specialist Remediation Solutions.

Click the link, fill in the form, and receive a personalised quote for your next project.

Get A Quote

Client Testimonials and Feedback

Gus WilmotGus Wilmot
07:14 16 Apr 24
Very prompt service, great value. We look forward to working with SRS again on our next project.
Ben CollettBen Collett
19:10 11 Apr 24
I completed a demolition and site clearance project where i had asbestos sheets on the floor and on a roof. I Contracted SRS to remove all asbestos which they completed efficiently and at a fair price.Even better still, we found some additional asbestos which we received same day service for the collection. Can't get any better than that!Great team and I highly recommend getting in touch for any asbestos removal needs you have.
Lloyd SmithLloyd Smith
11:57 16 Mar 24
From first contact (by email) to the guys leaving the site, a really impressive experience.Great communication, happy with the quote and all of the associated paperwork required.All health and safety for all involved carried out with professionalism.Work carried out within timespan given and site left clean and ready for next part of the project.An overall excellent experience and would be happy to recommend and use again.
john knightjohn knight
14:29 04 Mar 24
Very thorough at consultancy stage. Polite and knowledgeable. Work carried out on time and very satisfied with the result. Would thoroughly recommend.
Paul GeogheganPaul Geoghegan
17:06 25 Jan 24
They do exactly what they say! Brilliant. Definitely recommend them. Big thumbs up 👍🏼.
jay cooperjay cooper
14:07 22 Jan 24
Quality company, would definitely recommend 👍🏻
Marianne LeadbitterMarianne Leadbitter
14:01 22 Jan 24
Very efficient and professional service would highly recommend also have friendly courteous staff
Steven WrigleySteven Wrigley
11:47 15 Jan 24
SRS were easy to deal with, with promp replies to my emails and easy to arrange for the job to be done while I wasn't at home. They removed some asbestos floor tiles for us and did so leaving no mess behind by the time I ruturned home. Overall very pleased witht the service.
Tessa WithallTessa Withall
19:50 18 Oct 23
The guys who turned up today did a fantastic job. They were punctual, very accommodating, worked so well and talked me through everything they had done and detailed where they have cleaned. They were honestly fantastic. Highly recommended. From someone who has worked in their industry aswell so I was mightily impressed.I also spoke to others through the company who also were fantastic and very professional.Highly recommended
Richard AbbottRichard Abbott
21:51 31 Mar 23
We had SRS attend a recent job where we had discovered what appeared to be asbestos.They were prompt to attend and having established that is was indeed asbestos, arranged a very swift removal at a cost which was not at all unreasonable.