Menu Close

Chlorination and Legionella Control

Explore the importance of chlorination in Legionella control. Learn how effective chlorination practices contribute to safe water systems. Discover expert insights from Pipe Testing Services.

Chlorination and Legionella Control

Chlorination is a cornerstone of modern water treatment, serving as a vital defence against waterborne contaminants and ensuring the health and safety of communities. 

At Pipe Testing Services, as legionella contractors, we provide chlorination services that nullify a legionella outbreak. 

Within this broader context, one of the crucial roles of chlorination is its active contribution to controlling Legionella bacteria, thereby mitigating the risk of Legionnaires’ disease and safeguarding public well-being.

water mains chlorination - image of PTS working on pipework.

    Chlorine Applications for Legionella Control

    Legionella bacteria, which can cause Legionnaires’ disease, thrive in water systems where temperatures range from 20°C to 45°C and nutrients are available. To prevent the growth of Legionella, effective control measures are crucial.

    While chlorine is commonly used for disinfection, its effectiveness in controlling Legionella is limited. Here are some key points to consider:

    • The primary method for Legionella risk management is maintaining appropriate water temperatures.
    • Hot water storage cylinders (calorifiers) should store water at 60°C or higher.
    • Hot water distribution should be at 50°C or higher (use thermostatic mixer valves near outlets to prevent scalding).
    • Cold water should be stored and distributed below 20°C.
    • Regular checks, inspections, and cleaning by a competent person are essential.
    • Design systems to minimise Legionella growth:
    • Keep pipe work short and direct.
    • Adequately insulate pipes and tanks.
    • Use materials that discourage Legionella growth.
    • Prevent contamination (e.g., fitting tanks with lids and insect screens).
    • Analyse water samples periodically to ensure acceptable bacteria counts.
    • Remove stagnant water by flushing infrequently used outlets (showers, taps) weekly.
    • Clean and descale shower heads and hoses quarterly.
    • Periodically clean cold-water storage tanks and inspect hot water cylinders for debris or corrosion.

    The Power of Chlorination in Legionella Control

    Chlorination is a formidable tool in the arsenal against Legionella bacteria, thanks to its multifaceted approach to disinfection:

    Principles of Effective Chlorination and Legionella Control

    Efficient utilisation of chlorination for Legionella control involves embracing several best practices:

    The process commences with Pipe Testing Services meticulously evaluating the design, characteristics, and potential risk factors associated with Legionella growth within the water system.

    Calculating the appropriate dosage of chlorine stands as a pivotal task. Variables like water temperature, pH levels, and the presence of organic substances are taken into account to determine the optimal dosage.

    Ensuring the even distribution of chlorine throughout the entire water system is pivotal. This practice guarantees consistent disinfection and Legionella control across the system.

    Pipe Testing Services conducts regular monitoring of chlorine residuals and performs water quality assessments. This diligent oversight ensures that the desired disinfection levels are not only attained but also maintained.

    Rigorous record-keeping of chlorination processes, monitoring results, and maintenance activities facilitates the tracking of the efficacy of Legionella control measures over time.

    Our Distinctive Approach to Chlorination Services

    Pipe Testing Services offers a distinct approach to chlorination. Our commitment to water safety and quality delivers exceptional results that surpass expectations. Count on our expertise and innovative solutions to uphold your water systems’ integrity.”

    Electrical water supply system with automatic pump control. Carrying out Chlorination, Legionella Control

    Chlorine Dioxide as an Alternative

      • Chlorine dioxide (ClO₂) is highly effective against Legionella.
      • It has been successfully used in hospital water systems to prevent Legionnaires’ disease.
      • Unlike traditional chlorine, chlorine dioxide remains effective even at low concentrations.

    Chlorine (Cl₂) is commonly used to control Legionella and other pathogens. It achieves this by breaking down the chemical bonds in the enzymes of Legionella. When chlorine interacts with these enzymes, it replaces one or more hydrogen atoms, causing the enzyme to disintegrate or change shape, ultimately leading to the death of Legionella bacteria.

    However, it’s essential to note that chlorine has limitations in controlling Legionella effectively.

    While lower concentrations can kill Legionella in laboratory settings, higher concentrations are required in real-world plumbing systems due to factors like biofilm, sediment, and system construction. Continuous elevated chlorine levels are not recommended due to potential harm to plumbing systems and unintended consequences other methods, such as chlorine dioxide, may offer better results

    Beyond Chlorination: Holistic Water Solutions

    While chlorination is a critical aspect of our services, our commitment to comprehensive water solutions sets us apart. Beyond chlorination, we offer an array of services such as hydrostatic pressure testing, water quality analysis, and CCTV clean water surveys. This holistic approach ensures that your water systems remain efficient, safe, and compliant.

    When you choose Pipe Testing Services, you’re not just selecting a service provider; you’re choosing a trusted partner in your journey toward impeccable water quality. Our client-centric approach, coupled with a wealth of industry knowledge, enables us to offer unmatched expertise and peace of mind.

    Get in Touch with Pipe Testing Services

    Are you ready to elevate the safety and quality of your water systems? Reach out to us today to discuss your chlorination needs, receive personalised guidance, and explore our comprehensive water solutions. From consultation to implementation, we’re here to support you every step of the way.

    For exceptional chlorination services, please contact Pipe Testing Services using the following information:

    Phone: 01922 451646

    Email: enquiries@pipetestingservices.co.uk

    Address: Unit 27 Birchbrook Industrial Estate, Shenstone, Lichfield, Staffs, WS14 0DJ

    Your water system’s safety and compliance are our top priorities. Connect with us now to embark on a journey toward pristine water quality.