Legionella Testing and Services

Are You Protected from a Legionnaire’s Disease Outbreak?


EST is a CDC ELITE and ANSI/ANAB ISO 17025 Accredited Laboratory offering a variety of Legionella testing options designed to fit the needs of your Legionella Water Management Programs for your building water systems.  All of our Legionella analyses feature Ph.D. Interpretations and Recommendations by Dr. Richard Miller, along with his over 45 years of experience with Legionella.  Click the links below to learn more about the different Legionella testing options available.

  • Standard turnaround 7-10 days
  • ISO 11731:2017 process method
  • Reporting L. pneumophila Serogroup 1 (SG 1), L. pneumophila SG 2-14, and L. non-pneumophila species
  • Rapid turnaround in 96 hours
  • Traditional culture processing
  • Reporting L. pneumophila SG 1, L. pneumophila SG 2-14, and L. non-pneumophila species
  • Same Day or Next Business Day turnaround
  • Viable specific version of Legionella qPCR ISO/TS 12869:2019
  • Validated to accurately report CFU/ml
  • Reporting viable L. pneumophila SG 1 and L. pneumophila SG 2-15

Need Help Understanding Which Test Is Right For You?

Click on the image below to learn more!

What Test Graphics Final

What is Legionella?

Legionella is a genus of potentially pathogenic (Legionnaires’ disease-causing) bacteria that live in environmental water ecosystems, inside of free-living amoebae and within the microscopically diverse water/surface biofilms.  In addition to lakes and streams, these Legionella-containing biofilms commonly the genus Legionella contains at least 50 identified species and more than 70 different serogroups. The species L. pneumophila is responsible for 90% of the cases of Legionnaires’ disease, and the serogroup L. pneumophila serogroup 1 is the cause of virtually all community-acquired outbreaks of Legionnaires’ disease.

What is Legionnaires’ disease?

Legionnaires’ disease is an acute pneumonia caused by inhalation of an aerosol of environmental water containing an infectious dose of L. pneumophila, or less commonly, one of the other Legionella species.  The disease can be rapidly fatal if not treated aggressively with the appropriate antibiotics, especially in hospital-acquired disease in immunocompromised patients with underlying health conditions.

The first documented outbreak of Legionnaires’ disease was at the 1976 convention of the American Legion, where 221 of the attendees contracted the disease and 34 died. The name of the disease and the genus name came from this first association with the American Legion.  Since then, there has been a steady rise in the recognition of outbreaks of Legionnaires’ disease, including a large outbreak in the South Bronx of New York City during three weeks of the summer of 2015, where there were 133 cases and 16 deaths from exposure to a single contaminated cooling tower on top of a hotel building.  Hospital-acquired disease is more common and is linked to exposure to the contaminated hot water loops of the premise plumbing in hospitals and nursing homes.  Outbreaks from exposure to the hot water loops in hotels has also been documented.

Dr. Legionella™ And EST

With all our great Legionella services you get access to Dr. Legionella™ and his extensive Legionella knowledge and experience.

Legionella Management in Building Water Systems

EST and Dr. Miller have provided our customers with the highest level of Legionella services and information since 1983 and we are prepared to assist you with ASHRAE 188-2021.  We can provide guidance in establishing your “Water Management Program”.

Does ASHRAE 188-2021 apply to you?

COVID-19 and Legionella

The impact COVID-19 has had on everyone extends to building water systems, both cooling towers, and potable water systems. Inactivity and limited use can contribute to the formation of biofilm allowing for Legionella proliferation. EST can assist in developing a reopening plan for your facility, including highly effective re-commissioning disinfection procedures and follow-up validation testing.

BEYOND Legionella

EST also offers a wide variety of Environmental Microbiological Services please click below to learn more.

Get in touch