Chlorination for Decommissioned Pipelines:
Safety & Compliance
Pipe Testing Services (PTS) provides specialised chlorination for decommissioned pipelines, a critical service for upholding the highest standards of safety and compliance during infrastructure projects. Before redundant or aging pipelines are removed or abandoned, they must be properly disinfected. This process plays a crucial role in mitigating health risks to workers and preventing environmental contamination.

The Critical Importance of Disinfecting Decommissioned Pipelines
Over an extended period of disuse, water mains and pipelines can become a breeding ground for harmful bacteria, sludges, and other contaminants. Neglecting proper disinfection before removal or demolition poses severe hazards:
- Protecting Worker Health & Safety: When a pipe is cut, workers can be exposed to aerosolized bacteria (like Legionella), mould, and other hazardous substances. Proper chlorination significantly reduces this risk, creating a safer work environment. Adherence to Chlorination Safety Protocols and PPE is mandatory.
- Preventing Environmental Contamination: Discharging contaminated water or disposing of contaminated pipe sections can release harmful substances into the surrounding ecosystem. Disinfecting the pipeline beforehand is a key step in responsible environmental management.
- Ensuring Regulatory Compliance: UK regulations govern the safe handling and disposal of infrastructure. Failing to follow correct decommissioning procedures can result in severe penalties and legal repercussions. For comprehensive guidance on site safety, regulations from the Health and Safety Executive (HSE) are a vital resource.

The PTS Process for Decommissioning Chlorination
Our skilled technicians plan and execute chlorination procedures tailored to the unique characteristics of each decommissioned system. This comprehensive process ensures a safe and compliant approach from start to finish.
Step 1: Thorough Site Assessment and Evaluation
Before commencing, our team conducts a detailed evaluation of the decommissioned pipeline’s condition. This crucial step involves assessing the extent of potential bacterial growth, identifying any potential contaminants, and planning a tailored chlorination strategy.
Step 2: Precise Chlorine Dosage Calculation
Based on the pipe specifications, water quality analysis, and assessment, we calculate the precise chlorine dosage required for effective disinfection without overexposure.
Step 3: Safe Application and Contact Time
Following industry-leading chlorination protocols, we ensure the safe handling and application of the chlorine solution. The solution is allowed to sit for a sufficient contact time to ensure complete disinfection throughout the pipeline.
Step 4: Rigorous Monitoring and Testing
We employ advanced sampling and analysis techniques to measure chlorine residual levels and verify that complete disinfection has been achieved, ensuring the pipeline is safe for the next stage of its lifecycle (removal or disposal).
Step 5: Controlled Dechlorination and Responsible Discharge
Upon successful completion of the chlorination process, our team implements controlled Dechlorination of Pipelines. This crucial step neutralises residual chlorine, allowing for environmentally responsible discharge or disposal procedures and minimising any impact on local ecosystems and waterways.
Why Choose PTS for Decommissioned Pipeline Services?
For safe, compliant, and effective chlorination services for decommissioned pipelines, trust the professionals at Pipe Testing Services.
- Specialised Expertise: We have in-depth knowledge and rigorous training specifically for the challenges of decommissioned systems.
- Focus on Safety: We prioritise the safety of your workers and the environment above all else.
- Regulatory Adherence: We ensure all work complies with UK regulations, providing full documentation and Chlorination Certificates for your records.
- Nationwide Coverage: With a strong presence across the United Kingdom, our teams can rapidly deploy to any location, ensuring timely and efficient service delivery for your project schedule.

Trust PTS for Comprehensive Chlorination Expertise
For safe, compliant, and effective chlorination services, trust the professionals at Pipe Testing Services. Our team’s in-depth knowledge, rigorous training, and meticulous adherence to protocols ensure your chlorination for decommissioned pipelines project meets the highest standards. Contact us today to leverage our specialised chlorination services and solutions tailored to your unique project needs.
- Phone – 01922 451646
- Email – enquiries@pipetestingservices.co.uk
- Address – Unit 27 Birchbrook Industrial Estate, Shenstone, Lichfield, Staffs, WS14 0DJ


FAQs for Decommissioned Pipeline Chlorination
Is chlorination really necessary for a pipe that's being removed?
Yes, absolutely. It is a critical safety step to protect demolition and groundworks crews from exposure to harmful bacteria that have grown inside the stagnant pipe.
How does this differ from chlorinating a new pipe?
Decommissioning focuses on sterilizing existing contaminants for safe removal, often requiring different chlorine concentrations and contact times than commissioning a new, clean pipe for service.
What happens to the chlorinated water?
It is never discharged directly into the environment. We perform a full dechlorination process to neutralise the chlorine before the water is safely and responsibly disposed of according to environmental regulations.