Legionella Risk Assessment
Legionella bacteria can pose serious health risks when water systems are not properly maintained. As a CDC ELITE–certified laboratory and supported by an ASSE 12080–certified Legionella Water Safety & Management Specialist, PITS Environmental provides trusted, science-backed Legionella risk assessment services for commercial, residential, healthcare, and industrial facilities.
Serving New Jersey and New York, we help building owners and managers identify vulnerabilities, evaluate water system conditions, and implement strategies that align with ASHRAE Standard 188, CDC recommendations, and state regulatory requirements. Our expert team ensures your water systems remain compliant, safe, and well-managed to minimize the risk of Legionella growth and potential outbreaks.
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What is Legionella?
Legionella is a pathogenic bacterium commonly found in freshwater environments. Under certain conditions, it can thrive in man-made water systems such as cooling towers, hot tubs, and plumbing systems.
Exposure to Legionella through inhalation of contaminated water droplets can cause Legionnaires’ disease, a severe form of pneumonia, or Pontiac fever, a milder illness.
Learn more about how Legionella can contaminate cooling systems and HVAC water in commercial environments.
Why Conduct a Legionella Risk Assessment?
Prevent exposure to Legionella bacteria and safeguard occupants and visitors.
Meet local, state, and federal standards, including OSHA and CDC guidelines.
Reduce the risk of legal and financial repercussions from outbreaks.
Avoid system failures caused by bacterial contamination.
We also help clients align with state-specific Legionella testing regulations to avoid compliance risks.
Key Elements of Our Legionella Risk Assessment
Our comprehensive Legionella risk assessment evaluates every potential source of bacterial growth and exposure within your building water systems. Guided by ASHRAE 188 best practices and performed by ASSE 12080–certified specialists using CDC ELITE–certified laboratory methods, our process ensures maximum accuracy and regulatory compliance.
A detailed inspection and documentation of all water systems—including cooling towers, HVAC systems, and potable water systems—to identify structural and operational vulnerabilities that may contribute to microbial growth.
We pinpoint high-risk conditions such as stagnant zones, scale buildup, inadequate temperature control, and insufficient system maintenance—factors known to promote Legionella proliferation.
Our specialists collect and analyze water samples to detect Legionella and other microbiological contaminants. All testing is performed using CDC ELITE–validated methodologies to ensure precise, defensible results.
We monitor temperature patterns throughout the system to identify conditions favorable to bacterial growth and evaluate whether temperature control strategies are functioning effectively.
Biofilm often serves as a long-term reservoir for Legionella. We assess system surfaces and components for biofilm formation and microbial buildup to determine necessary remediation or control actions.
We evaluate the effectiveness of existing water treatment strategies, disinfection processes, and maintenance protocols. Recommendations are aligned with ASHRAE 188 compliance requirements and best-practice Legionella mitigation standards.
Our Legionella testing services follow ELITE CDC protocols to ensure accurate detection and reporting.
Our Comprehensive Reports
Following the risk assessment, we provide detailed reports that include:
An overview of identified risks and their potential impacts.
Clear, accurate results of water sampling and analysis.
Actionable guidance for mitigation, including
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maintenance improvements, system modifications, and water treatment strategies.
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A tailored checklist to ensure your facility meets regulatory standards.
Who Needs a Legionella Risk Assessment?
Why Choose PITS Environmental?
Accredited Expertise
Our lab meets stringent standards, ensuring accuracy and reliability.
Advanced Technology
We utilize state-of-the-art instruments for precise analysis.
Tailored Solutions
Testing services customized to your specific agricultural needs.
Fast Turnaround
Timely results to help you make critical decisions without delay.
Reliable Water and Air Quality Testing Services
Protect your environment with our specialized water and air quality testing solutions, offering comprehensive analysis to detect contaminants, convenient sample collection, and on-site testing for immediate results. Contact us today to schedule a consultation or on-site visit and take the first step toward a healthier, safer environment!
Frequently Asked Questions
How often should Legionella risk assessments be performed?
Legionella risk assessments should be conducted annually or whenever there are changes in building water systems, occupancy, or operating conditions. Regular assessments ensure compliance with ASHRAE 188 and help maintain a safe, well-managed water system.
What are the early signs of a Legionella issue in a building?
Potential indicators include unusual odors, water discoloration, temperature inconsistencies, or reports of respiratory symptoms among occupants. A CDC ELITE–certified laboratory like ours can confirm the presence of Legionella through validated testing.
Can you assist with Legionella control and water management measures?
Yes. Our ASSE 12080–certified Legionella Water Safety & Management Specialist provides expert guidance on corrective actions, control measure optimization, and ongoing compliance with ASHRAE 188 and CDC recommendations.
What are the most common sources of Legionella in commercial and residential buildings?
Legionella bacteria frequently grow in hot water systems, cooling towers, showers, spa pools, decorative fountains, and areas where water is stagnant or not properly maintained. Identifying these sources is a critical part of a comprehensive risk assessment.
Are your Legionella testing and assessments compliant with OSHA, ASHRAE 188, and CDC guidelines?
Yes. Our testing is performed in a CDC ELITE–certified laboratory, and assessments are overseen by an ASSE 12080–certified specialist, ensuring full alignment with OSHA, CDC, and ASHRAE 188 requirements for Legionella risk management.
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