Tank Chlorination, Cleaning and Disinfection

As an individual or company responsible for a water system, you have a legal obligation under current Health & Safety Legislation (ACoP L8) to ensure the quality of the water provided and manage the risk of exposure to the Legionella bacteria.

Mawdsleys Pump Services are approved via the National Water Hygiene scheme to safely work on all aspects of water pressure tanks and booster sets.  We offer a wide range of water hygiene services, working with leisure facilities, domestic properties, Government buildings or directly with facilities management companies to help them meet their legal obligations.

Why Is Chlorine Used?

Because of chlorine’s effectiveness at eliminating the risks posed by naturally occurring viruses and bacteria in water, it is the standard water industry process for the safe sterilisation of drinking water.

Chlorine effectively kills any bacteria and viruses that may be in the water; ensuring it is fit for human consumption upon delivery to the building’s residents.

Using specialist cleaning equipment we are able to quickly clean and chlorinate all kinds of water tanks, from Gravity fed tanks to water boosted systems.

How Often Should I Have My Water Tanks Chlorinated?

Whilst there is no set frequency for the chlorination, cleaning and disinfection of tanks – those responsible for the water system are also responsible for ensuring it is safe and fit for purpose.  

Mawdsleys Pumps recommends an annual water test to ensure there are no harmful microbes present and a more frequent visual inspection of the water tanks to check for any visible issues within the tank such as the presence of corrosion or growth of mould.

Additionally, hot and cold water services should also be chlorinated, cleaned, flushed and disinfected in the following situations:

  • Completion of a new water installation or refurbishment of a hot and cold water system.
  • Installation of New Components.
  • Where the hot and cold water is not used for a prolonged period.
  • On a routine inspection of the water storage tanks, where there is evidence of significant contamination or stagnation.
  • If the system or part of it has been substantially altered or entered for maintenance purposes that may introduce contamination
  • Following water sampling results that indicate evidence of microbial contamination of the water system
  • During, or following an outbreak or suspected outbreak of legionella is linked to the system
  • Where indicated by the risk assessment
  • Animal Contamination.
  • The presence of Biofilm, Flora growth, or corrosion.

“The risk from exposure to Legionella should be prevented or controlled; precautions include keeping the system and the water in it clean”

ACop L8, paragraph 190

Will The Water Supply Cut Out During Chlorination?

Due to the nature of the tank chlorination process, you will experience some downtime to your water supply. However, all of our engineers are trained to work in a non-intrusive and efficient manner to reduce the amount of downtime to your system.

Once the chlorination and clean has taken place, our engineers will provide you with a full report with photographs detailing any additional problems associated with the tank or the water supply.

Contact Our Expert Team Today

To ensure your water system fulfils health and safety legislation, get in touch with us today – we offer a full range of water hygiene services designed to keep your system safe and compliant. Our engineers are trained to British standards and all of our samples are sent to a UKAS (United Kingdom Accreditation Service) for analysis.

For more information, call us now on Bristol: 0117 9552481 or fill out a contact form and we’ll get back to you.