MIDDLE EAST TESTING SERVICES W.L.L QATAR

Legionella Risk Assessment Services

Provided by METS Laboratories – Trusted Experts in Water Safety & Microbiology

What is Legionella and Why Does It Matter?

Legionella are bacteria naturally found in freshwater environments such as lakes and rivers. However, in man-made water systems, these microorganisms can multiply rapidly, especially in warm, stagnant, or poorly maintained environments.

When inhaled through fine water droplets (aerosols), Legionella can cause Legionnaires’ Disease — a severe, and potentially fatal, form of pneumonia.

High-Risk Environments Include:

  • Cooling towers and evaporative condensers
  • Hot and cold water systems
  • Showers, taps, and Jacuzzis
  • Air conditioning and misting systems
  • Industrial water tanks and laboratory systems

Legionella control is essential to protect public health, building occupants, and business reputation.

gloved hand holding test tube by river

What is a Legionella Risk Assessment?

A Legionella Risk Assessment is a legal and safety requirement in many countries, including Qatar, and is vital for any facility with water storage or distribution systems.

It involves a systematic evaluation of your water systems to:

  • Identify and assess potential Legionella contamination risks

  • Recommend preventive and corrective control measures

  • Ensure compliance with ISO 11731, Kahramaa, and MoPH water safety regulations

METS Lab’s Legionella Risk Assessment Services help organizations achieve compliance, reduce liability, and protect lives through a proactive and data-driven approach.

METS Lab’s Comprehensive Legionella Risk Assessment Includes

  • 1. Site Inspection & System Mapping
    • On-site survey conducted by certified assessors

    • Inspection of all domestic, industrial, and HVAC water systems

    • Schematic layout of system design and flow

    • Identification of areas with stagnation, dead legs, biofilm formation, or poor insulation
  • 2. Risk Identification & Hazard Analysis
    • Review of system design, age, and usage patterns

    • Analysis of temperature control and cross-connection points

    • Assessment of cleaning, disinfection, and maintenance routines
  • 3. Temperature Monitoring
    • Accurate temperature measurements at key control points
    • Identification of zones where temperature supports Legionella growth (20°C–45°C)
    • Data interpretation to evaluate compliance with safety thresholds
  • 4. Water Sampling & Laboratory Testing
    • Sampling conducted following BS 7592 and ISO 11731:2017 standards

    • Microbiological analysis performed at METS Laboratories’s ISO/IEC 17025-accredited facility

    • Identification and enumeration of Legionella species, including Legionella pneumophila
  • 5. Control Measures & Compliance Recommendations
    • Customized control and remediation strategies for each site

    • Guidance on system disinfection, temperature correction, and water flow optimization

    • Support for system upgrades to ensure sustainable long-term safety
  • 6. Training & Ongoing Support
    • Legionella awareness and prevention training for facility teams

    • Setup of logbooks and documentation for inspection records

    • Implementation of ongoing monitoring and review programs
testing the ph scale of water

testing the ph scale of water

testing the ph scale of water

Legal & Regulatory Compliance

All Legionella testing and risk assessment activities comply with national and international water safety standards:

  • ISO 11731:2017 – Detection and Enumeration of Legionella
  • Kahramaa Guidelines – Water quality and building water safety standards
  • MoPH Guidelines – Swimming pool and public water system compliance
  • ISO/IEC 17025 – Accredited microbiological laboratory testing standards

METS Lab’s processes are fully aligned with Qatar’s MoPH water safety initiatives and GCC environmental health standards.

Why Choose METS Laboratories for Legionella Risk Assessment

ISO/IEC 17025 Accredited Laboratory for microbiological and water quality testing

Certified and experienced Legionella risk assessors

Fast turnaround for laboratory testing and reporting

Customised control strategies for every type of facility

Transparent pricing and detailed, actionable reports

Serving hospitals, hotels, commercial buildings, factories, schools, and residential complexes across Qatar


Sample Legionella Risk Assessment Report Includes:

  • Executive Summary of findings and recommendations

  • Schematic Diagram of the entire water system

  • Risk Rating Matrix for each component or system area

  • Laboratory Results with colony counts (CFU/L)

  • Corrective and Preventive Action Plan (CAPA)

  • Certificate of Compliance and inspection documentation

Why Legionella Risk Management Matters

Legionella outbreaks can have serious health, legal, and economic consequences. Failing to manage risk can result in:

  • Severe illness or death
  • Regulatory penalties and legal liability
  • Business disruption or facility shutdowns
  • Loss of reputation and consumer trust

Proactive testing and regular risk assessments are the best defense against contamination, ensuring safe water systems and peace of mind.

Serving Qatar’s Water Safety Needs

METS Lab partners with property owners, facility managers, and government institutions across Qatar to deliver scientifically validated Legionella control programs.

Our team combines microbiological expertise and regulatory knowledge to ensure complete water safety compliance under Qatar’s MoPH and Kahramaa regulations.

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