Pipework Chlorination in London
London is where we do most of our work. Our engineers chlorinate new and altered pipework for M&E, mechanical and plumbing contractors, developers and builders across the capital, so your water connection or handover isn't held up waiting on paperwork.
New Thames Water and Affinity Water connections
If you're connecting a new supply in London, a chlorination certificate and lab sample results are usually needed before the connection can go ahead. Thames Water's guidance, for example, says it will ask for a chlorination procedure on new supply pipes of 63 mm and over. For new mains, pressure testing, chlorination and bacteriological sampling all come before connection. Affinity Water covers parts of north and west London, and its process can be different, so always check your connection offer for exactly what your water company wants.
We chlorinate private external MDPE mains up to 63 mm, take the samples and give you the paperwork, so you have it ready when your connection date comes.
What we do in London
Internal pipework chlorination for new installations, extensions and refurbishments, in line with BS 8558 and BS EN 806.
External mains chlorination of private MDPE supply pipes up to 63 mm.
Chlorination for new water authority connections, with pressure testing and sampling as one job.
Water sampling, tested for microbiological quality at UKAS-accredited labs.
Cold water storage tank (CWST) cleaning and disinfection, with reference to ACoP L8 and HSG274.
Pressure testing of new pipework before chlorination.
Same day chlorination certificate
Once the job is paid for, we issue your chlorination certificate on the same day. The UKAS lab results follow as soon as they come in. Find out what's on our chlorination certificate.
The London sites we work on
Commercial fit-outs and office refurbishments
New-build residential schemes and apartment blocks
Retail and hospitality units
Schools, healthcare and public buildings
Mixed-use developments and extensions
Our engineers are CSCS and EUSR carded, so they're ready for managed sites, inductions and permit systems. We have over 15 years in the trade and work with your programme, whether that's one riser or several phases.
Areas we often cover
We work across Greater London, including Central London and the City, Canary Wharf and East London, and North, South and West London. We also travel across England and Wales for larger projects.
Frequently asked questions
Do I need a chlorination certificate for a new connection in London?
Usually, yes, for larger supply pipes and new mains. Thames Water, for example, asks for a chlorination procedure on new supply pipes of 63 mm and over. Check your connection offer for exactly what's needed.
How quickly will I get my certificate?
We issue the chlorination certificate on the same day once the job is paid for. The lab sample results follow as soon as they come in.
Do you cover Affinity Water areas as well as Thames Water?
Yes. We work on sites across London whichever water company supplies them.
What do you need from me to quote?
The site address, pipe sizes and lengths, whether the pipework is internal or external, and when you need to connect.
Get a quote for your London site
Tell us about your site and when you need to connect, and we'll come back to you with a price and a date.