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Further Information

L8 ACOP Legionella Risk Assessment & Independent Audits

The Health & Safety Executive have updated  L8 “Control of Legionella Bacteria in Water Systems” Approved Code of Practice  and supplemented it with three additional guidance publications: HSG 274 Parts 1-3.

L8 relates to all commercial, industrial and municipal properties which have water systems and within L8 there is a requirement to carry out assessments of the risk of proliferation of Legionella and other bacteria within water systems.

We have been providing assessments of a range of systems for over 20 years, fundamentally the objectives are:

1   To establish the current position regarding water service condition.

2   To establish a record of plant data.

3   To identify areas where modifications or adjustments may be required from a water quality and/or safety point of view.

4    To establish a programme for compliance with HSG 274 the Control of Legionellosis including Legionnaires Disease.

Our Risk Assessments frequently cover the following:

i)                Incoming Water

ii)               Supply Water Tanks

iii)              Hot and Cold Water Systems

iv)              Calorifiers & Heat Exchangers

v)               Showers & Spray Forming Outlets

vi)              Cooling Systems

vii)             Water softeners and filters

viii)            Humidifiers & air conditioning units

ix)              Miscellaneous Plant & other risk systems

x)               Management Records, Schematics & Control Procedures

We utilise guidance from L8 /HSG274 Parts 1-3 / BS8580 and several relevant documents relating to the control of Legionella, in our assessment & subsequent recommendations.

Schematics are frequently not available or not suitable, we can provide a schematics drawing service ideally undertaken during the assessment or available as a stand alone service.

We frequently find that systems which appear to be satisfactory and in accordance with HSG 274 can still have hygiene problems. It is for this reason that we strongly recommend bacterial [Total Viable Count (TVC) and Legionella] sampling to compliment the physical data obtained during the assessment.

To obtain full benefit from a Risk Assessment it is important that our staff are assisted to access all parts of the system during our visit and that your site records, schematics and asbestos register are available.

Responsibility for compliance following the Risk Assessment remains with the Responsible Competent Person who needs to review it, implement recommendation and undertake routine preventative procedures.  Risk Assessments are recommended to be reviewed normally after two years but they should also be updated if there are significant system or other changes.


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