Water Chlorination & Disinfection Services

“Ensuring your water is safe, sterile, and legally certified.”

Water purity isn’t just a safety issue, it’s a legal gatekeeper for your project. Whether you are connecting a new development to the mains or remediating a system after a bacteria spike, HF provides the Certified Water Chlorination services required by local water boards and insurers. We ensure your infrastructure meets BS 8558:2011 standards, turning a complex regulatory hurdle into a seamless handover.

Certified Compliance for Safe Water Systems

Ensuring the purity of your building’s water supply is a legal and operational necessity. At HF, through our specialist Mechanical and Plumbing divisions, we provide comprehensive water chlorination services and issue the formal Water Chlorination Certificates required by local water boards and insurance providers.

Whether you are connecting a new supply to the mains or remediating an existing system after a positive bacteria test, our fully trained engineers ensure your water infrastructure is safe, sterile, and compliant with BS 8558:2011 standards.

When is Chlorination Required?

As specified in British Standards, hot and cold water systems must be cleaned, flushed, and disinfected under specific conditions to prevent the growth of harmful pathogens.

You will require a Chlorination Certificate if:

New Installations: You have fitted a new water supply, pipework, or a commercial water system that needs connection to the local authority mains.
System Alterations: Significant work or extensions have been carried out on your existing plumbing infrastructure.
Extended Stagnation: The system has been out of service for an extended period, leading to potential biofilm buildup.
Contamination Issues: There is evidence of stagnation in tanks or a positive test for bacteria (such as E. coli or Legionella).
Risk Assessment Requirements: Your annual Water Risk Assessment has flagged a need for system disinfection.

The Chlorination Process

We follow a rigorous, step-by-step procedure to ensure your system is completely decontaminated before certification is issued:

RAMS Issuance: We provide detailed Risk Assessments and Method Statements before work begins.
Initial System Flush: Clearing debris and stagnant water from the pipework.
Chemical Disinfection: Introducing a controlled chlorine solution into the system, ensuring it reaches all outlets and storage tanks.
Secondary Flush: Removing the disinfectant until the water is clear and safe for use.
Water Sampling: Taking samples for laboratory analysis to verify that the disinfection was successful.
Certification: Upon successful results, we issue your official Water Chlorination Certificate.

Expert Guidance Across the UK

Local water authorities across Scotland, England, and Ireland often have varying specifications for chlorination and mains connections. HF Group’s engineers are experts in these regional nuances; we consult with you to ensure the work meets the exact specifications of your local water board, preventing delays in your project timeline.

Integrated Water Safety

Because we are a multi-discipline group, we can combine your chlorination with wider water safety services, including:

Legionella Risk Assessments
Annual Tank Inspections & Cleaning
Temperature Monitoring Programmes
Mechanical Remedial Works

Protect Your Building and Its Occupants

Don’t let water quality become a liability. HF Group provides the technical expertise and the certification you need to keep your water systems flowing safely.

Need a Chlorination Certificate? Contact our Mechanical Services division today to arrange a site visit or consultation.