Legionella are naturally occurring waterborne bacteria that can multiply in technical water systems under favourable conditions, particularly in the presence of biofilms and temperatures between 25 °C and 45 °C. Aerosol-generating systems may facilitate transmission and increase potential health risks.
Reliable testing supports the assessment of microbiological risks, the verification of control measures and compliance with applicable requirements for water systems.
We support operators, facility managers and industrial customers with accredited Legionella testing across a wide range of water systems. Accreditation to DIN EN ISO/IEC 17025 provides the foundation for scientifically sound and regulatory-compliant results.
Sampling according to DIN EN ISO 19458 ensures representative sample collection and reliable analytical results.
Our accredited sampling personnel collect samples on site, ensuring comparable assessments and standards-compliant hygiene evaluations.
Classification according to TrinkwV, the UBA recommendation for Legionella and the 42nd BImSchV supports regulatory compliance and risk-based decision-making.
Routine monitoring helps identify developing trends and changes in system performance at an early stage.
Supports preventive risk management and long-term system control.
Analytical data support targeted corrective actions, including thermal or chemical disinfection measures.
Supports effective remediation strategies and long-term risk reduction.
Tailored monitoring concepts for residential buildings, industrial facilities, dental units, swimming pools and other water systems.
Supports risk-based monitoring and application-specific control strategies.
Assessment of drinking water systems for Legionella and other hygiene-relevant microorganisms to support safe operation and regulatory compliance.
Typical samples: Hot water systems, cold water systems, circulation systems, storage tanks and building installations.
Typical applications: Compliance testing under TrinkwV, risk assessment, operator obligations.
Assessment of cooling water systems where favourable conditions may promote the growth of Legionella and increase hygiene-related risks.
Typical samples: Cooling towers, evaporative cooling systems, process cooling water and recirculating cooling systems.
Typical applications: Monitoring in accordance with 42. BImSchV, risk management, compliance programmes and operational hygiene control.
Monitoring of dental unit waterlines where aerosol-generating procedures require particular attention to microbiological water quality.
Typical samples: Dental treatment unit water, dental waterlines and associated supply systems.
Typical applications: Routine hygiene monitoring, compliance with RKI recommendations and patient protection measures.
Assessment of bathing and swimming pool water hygiene and microbiological water quality.
Typical samples: Pool water, circulation systems, balance tanks and technical water circuits.
Typical applications: Compliance testing under DIN EN ISO 19643, routine hygiene monitoring.
Assessment of process water and wastewater from municipal and industrial water utilities.
Typical samples: Process water, industrial water systems, wastewater and specialized water networks.
Typical applications: Regulatory compliance, discharge monitoring, risk assessment.
Additional microbiological indicator parameters can complement Legionella monitoring and provide a broader assessment of water hygiene and system condition. Parameters such as Escherichia coli, coliform bacteria, enterococci and colony count support the evaluation of contamination pathways and overall microbiological water quality.
Unusual or inconclusive findings may require species-level identification to support further evaluation. Microbial identification helps characterise atypical isolates and supports contamination investigations, risk assessment and decision-making.
