Cold Water Storage Tanks


What's the Issue?

I am not sure if I meet the requirements of a competent person who can undertake a tank inspection or deep clean & disinfection on my premises.

I am after some further guidance and advice on how I can meet my current obligations and responsibilities.


What is your obligation?

As an employer or someone who is in control of a premises, including landlords, it is your responsibility to take the correct precautions to reduce the risk of exposure to Legionella to others. Annual inspections of cold water storage tanks are specific requirements of HSG 274 & BS 8558:2011.



Cold water storage tanks pose one of the highest risks of Legionella growth to the buildings water system, due to possibility of contamination, temperature gain or stagnation. If the cold-water storage tanks are not up to standard this could lead to a potential break out of contamination within the buildings water system and if a person was to contract Legionnaires disease as a result of this, the landlord/employer or person who controls the premises may be liable to prosecution and would have to demonstrate to a court that they have fulfilled their legal duty.


How we can help?

Atom Water Treatment have a fully qualified and experienced team ready to support and assist with your current obligations and responsibilities to ensure you meet your legal requirements. We are able to inspect and identify any risks to the premises cold water storage tanks to ensure they remain compliant and meet the required regulations.

Contact us for a free no obligation quote including any further advice and guidance you may require.

Book a Consultation

or call the office

0203 597 5035

In order to comply with the current guidelines of ‘BS 8580:2010, ACOP L8 4th Edition and HSG274 & BS 8558:2011’ annual inspections of cold water storage tanks should be undertaken to check its condition inside and outside as well as the water held within it.

It is imperative that these inspections take place to reduce the risk of exposure of Legionella. Cold water storage tanks can play a major part in any building’s hot and cold water systems, not only do they supply the building with drinking water, but they can often feed a number of assets including hot water systems, such as showers and sinks etc.

The water surface within the tank should be clean and free from any visible, significant contamination. If this is not found to be the case during the inspection, then the tank should be deep cleaned and disinfected.

During the inspection, tanks should be checked to ensure that any lids are closely fitted and in a good condition. The insect and vermin screen on the overflow and warning pipes and any vents should be intact and in a good condition. The thermal insulation should be in a good condition so that it protects from extremes of temperature. Any faults found should be rectified to comply with the current regulations.

Atom Water Treatment have a team of water hygiene specialists who can assist with your requirements and obligations and can undertake these types of inspections & cleaning in line with the current legislation & guidance. We are also able to offer water sampling & testing as an additional precaution when undertaking a full inspection or deep clean and disinfection.

All of Atom Water Treatment’s inspections include a full written and photographic report along with associated recommendations to remedy any faults identified.

All of Atom Water Treatment’s deep clean & disinfections include a full written and photographic report along with full certification upon completion of the works undertaken.