Legionella Testing Market - Global Industry Size, Share, Trends, Opportunity, and Forecast, 2021-2031F

PCR is the fastest growing sector, Asia-Pacific is the largest market

The Global Legionella Testing Market is projected to grow from USD 303.02 million in 2025 to USD 522.63 million by 2031, at a 9.51% CAGR. This market involves analytical processes to detect specific bacterial antigens or genetic material in water systems and clinical specimens. Key drivers include the widespread deterioration of aging water infrastructure, which facilitates biofilm formation and pathogen growth, alongside stringent public health codes mandating frequent environmental screening. The high mortality rate, estimated at 10 percent of diagnosed cases in 2024 according to the Alliance to Prevent Legionnaires' Disease, underscores the critical need for proactive monitoring and accurate detection in susceptible facilities.

Market Drivers

The rising incidence of Legionnaires' disease and pneumonia is a primary market driver, with bacterial proliferation exacerbated by warming climates and aging infrastructure, leading health agencies to prioritize rapid outbreak detection. Notable examples include a severe cluster in Albertville, France (September 2025, 50 confirmed cases), and a substantial outbreak in Harlem, New York (August 2025, 114 confirmed cases), compelling increased testing. Concurrently, technological advancements in rapid molecular diagnostic methods, such as polymerase chain reaction (PCR) techniques, are significantly influencing the market. The Legionella Control Association advanced these modern protocols in May 2025 by providing guidance on ISO/TS 16099 standards for PCR-based detection, thereby reducing turnaround times and enhancing water safety validation.

Market Challenges

A major challenge impeding market expansion is the high cost of advanced molecular diagnostic methods compared to conventional culture techniques. Laboratories frequently face budgetary constraints, limiting the adoption of rapid PCR systems and sustaining reliance on slower traditional methods. This financial barrier hinders the implementation of high-speed testing, particularly in regions prioritizing cost efficiency over diagnostic speed, thereby impacting revenue generation from modern automated platforms. Moreover, with 96 percent of Legionnaires' disease cases in 2024 being sporadic and unlinked to known outbreaks, as per the Alliance to Prevent Legionnaires' Disease, the high expense of advanced screening prevents facility managers from implementing necessary frequent monitoring, consequently limiting the addressable market for premium diagnostic solutions and slowing overall industry growth.

Market Trends

The market is witnessing a significant trend towards portable point-of-use testing devices, which decentralize diagnostic capabilities, enabling rapid on-site screening by facility managers and reducing exposure during potential outbreaks. Innovations in lateral flow immunochromatographic assays, exemplified by the Hydrosense PRO rapid testing kit's 100% accuracy for Legionella pneumophila serogroups 1 and 2-15 in a January 2025 study, bolster confidence in these portable formats and encourage more frequent testing. Another key trend is the evolution towards integrated water safety management services, moving beyond simple pathogen detection to comprehensive risk mitigation strategies that bundle diagnostic testing with digital monitoring, chemical treatment, and data analytics, fostering long-term partnerships and delivering tangible operational efficiencies, as shown by Ecolab's $9.1 billion in cumulative customer value reported in May 2025.

Key Market Players

• Abbott Laboratories
• Beckman Coulter, Inc.
• Bio-Rad Laboratories Inc.
• BIOMeRIEUX SA
• Eiken Chemical Co., Ltd
• Hologic Inc.
• Pro-Lab PLC
• QIAGEN N.V.
• F. Hoffmann-La Roche Ltd
• Takara Bio Inc.
• Thermo Fisher Scientific Inc.

Report Scope

In this report, the Global Legionella Testing Market has been segmented into the following categories, in addition to the industry trends which have also been detailed below:

Legionella Testing Market, by Type:

• Water testing
• IVD testing

Legionella Testing Market, by End Use:

• Microbial culture
• Direct fluorescent antibody (DFA) stain
• PCR
• Others

Legionella Testing Market, by Region:

• North America
• Europe
• Asia Pacific
• South America
• Middle East & Africa

Competitive Landscape

Company Profiles: Detailed analysis of the major companies present in the Global Legionella Testing Market.

Available Customizations:

With the given market data, the publisher offers customizations according to a company's specific needs. The following customization options are available for the report:

Company Information

• Detailed analysis and profiling of additional market players (up to five).

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