Risk assessments help identify potential Legionella proliferation hazards and acceptable risk levels. They include descriptions of water systems and management responsibilities, potential risk sources, and control measures. Legionella audits physically and chemically examine systems to identify risk areas and points for improvement. They are conducted by external partners and internal experts using sampling containers, analysis meters, and Legionella testing. The audits follow steps like system description, sampling, risk index evaluation, and action planning with follow-up. Resulting action plans include calendars, limit tables, decision trees, and required protocols.

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Legionella Risk assessment and audits
Kurita weekly technical insides in 5 slides
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2. Risk assessment definition
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Some numbers
 Risk assessment is the determination of risk related to
Legionella presence and recognized possible hazard
areas and situations for its proliferation.
 The identification, evaluation, and estimation of the levels
of risks involved in a situation, their comparison with the
standards, and determination of an acceptable level.
 Impossible to completely eliminate all risk, but do all that is
required to protect people

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Risk Assessment
• A description of the system and
management responsibilities
• any potential risk sources
• any check or modification in place to
control and reduce risks
According to the Who Guidelines the risk assessment should include
• Monitoring, inspection and maintenance
procedures
• Records of the monitoring results,
inspection and checks carried out
• A review date

4. Legionella audit
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5. Legionella Audit
It is a physical and chemical
examination of the system that
helps to identify the potential risk
areas for the Legionella
proliferation and check the
improving points
External partner
And internal expert
in company
systems
Sampling
containers for the
water sampling
Legionella analysis
pH and
conductivity meter
and Thermometer
Sampling
containers for
Legionella analysis
What do you need?

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Audit step by step
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Description of the
system, analysis
and on place audit
for the full
installation and
water systems
Sampling and Water
treatment program
decision
Microbiological Risk
Index evaluation
Structural index(IE)
Maintenance Index (IM)
Operational Index (OI),
action plan and follow up

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Action Plan
 Action Calendar
 Physic-chemical table - Limits vs. Action
 Total bacteria account table - Limits vs. Action
 Legionella account limits decision tree
 And all the protocols mentioned in the document
(Disinfection protocols, Sampling methods, Legionella records,
Physico-chemical analysis, Contact person in urgency cases)

8. Do you need
help?
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A TEAM THERE FOR YOU

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Contact information
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