Water Chlorination, Disinfection & Water Tank Cleaning

Integrated Compliance are a leading UK water treatment company offering a full range of expert water hygiene services including water chlorination, drinking water disinfection and cleaning of new and existing domestic hot and cold water systems; water tank cleaning, tank repair, relining, refurbishment and water tank replacement.

Our cleaning, chlorination, disinfection and water treatment services help organisations achieve and maintain good standards of water hygiene, and control levels of waterborne bacteria in their water systems.

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Water tank cleaning & disinfection

The cleaning and disinfection of cold water storage tanks should be conducted in accordance with BS EN 806-5:2012, BS8558:2015, BS PD 855468:2015 and the guidelines issued by the Drinking Water Inspectorate (DWI).

To determine cleanliness it is recommended that all cold water tanks be visually inspected every six months together with water sampling to determine if cleaning, disinfection, repair or replacement is required. Guidelines issued by the Drinking Water Inspectorate (DWI) concerning water tanks serving drinking water require these to be drained, cleaned and disinfected annually.

Expert water chlorination services

Our expert water hygiene, water chlorination, disinfection, water tank cleaning, maintenance and engineering support solutions include:

Water System Cleaning & Disinfection
Comprehensive hot and cold water system cleaning, disinfection and chlorination services for new and existing installations to meet the requirements of BS EN 806-5:2012, BS 8558:2015 and BS PD 855468:2015.

Cold Water Storage Tank Cleaning & Disinfection
Expert Cold Water Storage Tank cleaning and disinfection services.

Tank repair, refurbishment & replacement.
Water tank repair, relining, refurbishment and replacement.

Maintaining good water hygiene standards

Maintaining good standards of water hygiene and controlling levels of dangerous waterborne bacteria, including Pseudomonas and Legionella bacteria, which causes the potentially fatal condition Legionnaires’ disease, is an essential component in the successful management of any engineered water system.

Poorly maintained water systems, old and dilapidated pipework, neglected water tanks can lead to significant deterioration in the quality of water standards. Importantly, such conditions can also create ideal environments for the growth and proliferation of dangerous waterborne pathogens such as Legionella. This may significantly increase risks to the health and safety of employees, customers and system users, but it can also have a legal impact on your business as you may be breaking the law, exposing you and your business to potential legal action or civil prosecution.

Water chlorination & disinfection of new & existing water systems

Our teams of highly trained water treatment engineers are experts in performing disinfections of both new and existing water services installations in accordance with the requirements of BS EN 806-5:2012, BS 8558:2015 and BS PD 855468:2015. These standards formulate standards in regards to design, installation, testing, operation, cleaning, disinfection and maintenance of drinking water services inside buildings.

When to clean & disinfect hot & cold water systems

New or existing water services installations should be cleaned, flushed and disinfected under the following circumstances:

  • New or Refurbished hot and cold water Installation
  • New Components or Equipment introduced to existing system
  • When the hot and cold water services have not been used, flushed or the water treatment control measures have been inactive for some time.
  • If significant contamination or stagnation of the water tanks is identified.
  • Parts of the water system have been substantially altered or have undergone maintenance works that may have introduced contamination.
  • Water sampling results indicate excessive microbial contamination.
  • When an outbreak or suspected outbreak of Legionnaires’ disease or legionellosis is linked to the water installation
  • As a recommended remedial action identified in the legionella risk assessment.

Dealing with legionella bacteria & biofilm contamination

Where a water system is known to be contaminated with legionella bacteria or is suspected of harbouring a build-up of biofilm then a more powerful disinfectant may be required to control the risks.

Integrated Compliance use a number of chemical products including chlorine, chlorine dioxide, hydrogen peroxide or silver stabilised hydrogen peroxide, all of which are proven to be highly effective against difficult biofilm and legionella bacteria.


How do I carry out a Legionella risk assessment?

The purpose of carrying out a risk assessment is to identify and assess any risks in your water system. The responsible person should understand your water systems and any associated equipment, in order to conclude whether the system is likely to create a risk from exposure to legionella, and should be able to identify whether:

  • water is stored or re-circulated as part of your system
  • the water temperature in some or all parts of the system is between 20–45 °C
  • there are sources of nutrients such as rust, sludge, scale and organic matters
  • conditions are present to encourage bacteria to multiply
  • it is possible for water droplets to be produced and, if so, whether they could be dispersed over a wide area, eg showers and aerosols from cooling towers
  • it is likely that any of your employees, residents, visitors etc are more susceptible to infection due to age, illness, a weakened immune system etc and whether they could be exposed to any contaminated water droplets

Your risk assessment should include:

  • management responsibilities, including the name of competent person and a description of your system;
  • potential sources of risk;
  • any controls in place to control risks;
  • monitoring, inspection and maintenance procedures;
  • records of the monitoring results, inspections and checks carried out;
  • arrangements to review the risk assessment regularly

If you decide that the risks are insignificant, your assessment is complete. You may not need take any further action at this stage but you should review the assessment regularly in case anything changes in your system.

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