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Water System Chlorination

Chlorination trailers & hire equipment - water system chlorination

Water System Chlorination

    At Pipe Testing Services (PTS), we understand the critical role of water system chlorination in maintaining public health. Our expert team carries out chlorination services for clients across the UK, ensuring that water supplies are safe and free from harmful microorganisms.

    What is Water System Chlorination?

    Water system chlorination is a disinfection process that involves adding chlorine or chlorine-based compounds to water to kill harmful microorganisms and prevent waterborne diseases. Chlorination works by introducing chlorine to the water supply, which then disinfects the water by killing or inactivating pathogens such as bacteria, viruses, and protozoa that can cause illnesses.

    Why Choose PTS for Your Chlorination Needs?

    Our team at PTS is fully qualified, accredited and experienced in carrying out chlorination services for various water systems.

    We adhere to the highest industry standards and use state-of-the-art equipment to ensure thorough and effective chlorination. Whether you need chlorination for a new water system, routine maintenance, or emergency disinfection, we’ve got you covered.

    Get a Quote for Water System Chlorination – take a look here, at our dedicated site for Pipework Chlorination for more information.

    The Water System Chlorination Process

    • Pre-Treatment Assessment: Before beginning the chlorination process, our experts assess the water system to determine the appropriate chlorine dosage and method.
    • Chlorine Application: We add chlorine to the water system using the most suitable method for your specific needs. This may involve gaseous chlorine, liquid sodium hypochlorite, or solid calcium hypochlorite.
    • Contact Time: The treated water is left for a specified period to ensure adequate disinfection. This contact time allows the chlorine to effectively kill or inactivate pathogens.
    • Flushing: After the contact time, we thoroughly flush the system to remove any remaining chlorine and ensure the water is safe for consumption.
    • Testing and Verification: Our team conducts rigorous testing to verify that the chlorination process has been successful and that the water meets all safety standards.

    Learn More About Our Chlorination Services. Navigate to our pages via the dropdown above, under chlorination services – such as; Chlorination for Water Main Repairs and Replacements and Chlorination for Decommissioned Pipelines

    When is Water System Chlorination Required?

    Several situations call for water system chlorination:

    • Commissioning new or refurbished water systems
    • After suspected or confirmed contamination
    • Following periods of system inactivity or stagnant water
    • As part of routine maintenance to prevent microbial growth

    At PTS, we work closely with water companies, contractors, and property managers to ensure timely and effective chlorination when needed.

    Chlorination trailers & hire equipment - water system chlorination

    What are the Benefits of Professional Water System Chlorination?

    Challenges and Considerations for Water System Chlorination

    While chlorination is highly effective, it’s important to be aware of potential challenges:

    • Disinfection By-Products: Chlorine can react with organic compounds in water, forming by-products. However, the benefits of disinfection generally outweigh these risks. Read our recent blog to learn more; Striking the Right Balance – Optimising Chlorination & Minimising DBP Risks
    • Taste and Odour: Some people may notice a slight chlorine taste or smell in treated water, although this is harmless and often dissipates quickly.
    • Corrosion: In some cases, chlorination can contribute to pipe corrosion. Our experts can advise on appropriate measures to mitigate this risk.

    At PTS, we’re committed to addressing these challenges and providing safe, effective chlorination services tailored to your specific needs.

    Environmental Considerations

    We recognise the importance of environmental stewardship in water treatment. Our chlorination processes are designed to minimise environmental impact while ensuring effective disinfection. We use precise dosing methods to prevent over-chlorination and employ Dechlorination techniques when necessary to protect aquatic ecosystems.

    How Long Does the Chlorination Process Take?

    The duration of the chlorination process can vary depending on the specific situation and system:

    • For new installations or after major modifications, the process typically involves adding chlorine solution to achieve a concentration of 50 ppm and allowing it to stand for at least one hour.
    • The entire process, including flushing and testing, may take several hours to a full day for a typical domestic system.
    • For larger or more complex systems, the process may take longer to ensure thorough disinfection.

    FAQs - Water System Chlorination

    How does water temperature affect the chlorination process?

    Water temperature can significantly impact chlorination effectiveness. Generally, chlorine works more efficiently in warmer water, as chemical reactions occur faster. However, in colder water, a higher chlorine concentration or longer contact time may be necessary to achieve the same level of disinfection.

    While some simple chlorination tasks can be performed by property owners, it’s generally recommended to hire professionals, like us, for water system chlorination. We have the necessary expertise, equipment, and understanding of regulations to ensure the process is carried out safely and effectively. DIY chlorination carries risks of improper dosing or inadequate disinfection.

    Chlorination can help control biofilm growth in water pipes, but it may not completely eliminate established biofilms. Regular chlorination can prevent new biofilm formation and reduce existing biofilm. However, for severe biofilm issues, more aggressive cleaning methods like pipe pigging or high-velocity flushing may be necessary in conjunction with chlorination.

    When chlorinating systems with lead pipes, care must be taken to avoid increasing lead leaching. Chlorine can potentially increase water’s corrosively, leading to more lead dissolution. In such cases, it’s crucial to carefully control pH levels and consider using alternative disinfection methods or implementing corrosion control strategies.

    Water hardness can affect chlorination efficiency. Hard water, which contains high levels of calcium and magnesium, can reduce the effectiveness of chlorine by forming compounds that bind with the chlorine. This may necessitate higher chlorine doses or longer contact times to achieve the desired level of disinfection.

    When chlorinating water systems in buildings with sensitive equipment (e.g., medical facilities, laboratories), we take special precautions that include:

    • Isolating sensitive equipment from the water supply during chlorination
    • Using lower chlorine concentrations and longer contact times
    • Implementing thorough flushing procedures post-chlorination
    • Conducting additional water quality tests before reconnecting sensitive equipment

    You can take a look at our blog here – Chlorination Safety Protocols and PPE for Water System Disinfection – for more information on how we at PTS safely carry out chlorination works.

    Get in Touch with PTS for Professional Water System Chlorination

    At Pipe Testing Services (PTS), we’re dedicated to ensuring the safety and cleanliness of your water supply through expert chlorination services. Our comprehensive approach adheres to the highest industry standards, helping to protect public health and your water infrastructure.

    If you have any questions about water system chlorination or need assistance with your project, don’t hesitate to reach out to our expert team at PTS.

    Phone – 01922 451646

    Email –

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