Cleaning and disinfection of Hot and Cold water systems
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Mains injection and pipe work chlorination
Internal Water Supply – A mains injection or pipe work chlorination is the process of disinfecting and pre-commissioning a building’s internal hot and cold domestic system, including all pipe work and storage tanks. This service ensures systems are safe to supply potable water to outlets such as drinking water or showers.
External / New mains Water Supply – When new water mains supply are installed to a site, there is a mandatory requirement by the local water authority for the pipework to be flushed and disinfected in accordance with their own specification.
All new or modified water systems require to have this performed before they can be connected to the mains supply to prevent contamination of the water supply.
The recognised standard for undertaking both of these services work is PD855468 and HSG274 Part 2 (and BS 8558:2015) alongside any additional requirements of specific water authorities.
When is a pipe work disinfection required?
- In any new installations as part of a building’s commissioning procedure.
- Where major extensions or alterations have been carried out to the water system.
- If regular microbiological sampling provides a positive result on an existing system for high counts of harmful pathogens such as Legionella or Pseudomonas.
- If contamination within the water system is suspected.
- If the water system has not been in regular use and therefore the pipe work has not been flushed regularly.
What is involved?
- Strictly compliant: Our disinfection services are designed specifically to meet the standards of PD855468 and HSG274 Part 2 (BS 8558:2015), ACoP L8 and the local water authority specifications.
- Health and safety: Health and safety is a critical component of any contract. LWFS LTD is accredited by SAFEContractor, and our engineers are CCNSG card holders. This is in addition to a wealth of experience working on construction sites.
- National Water Hygiene Card Holder: All LWFS Ltd engineers are National Water Hygiene Card holders, which is recognised by all UK water companies and is a pre-requisite for any work on the water distribution network.