433 Legionella Investigations and LIDO Technology

What if preventing Legionella outbreaks wasn’t about adding more chemicals, but removing what the bacteria needs to survive? In this episode of Scaling UP! H2O, host Trace Blackmore talks with Dr. David Krause, Certified Industrial Hygienist, toxicologist, and founder of HC3, about his groundbreaking approach — LIDO (Legionella Inhibition by Deoxygenation).

Legionella on the Rise 

Dr. Krause has investigated high-profile Legionella outbreaks and seen firsthand how current prevention strategies often fall short. Despite ASHRAE 188 standards, CMS requirements, and increasing water management plan adoption, Legionella cases continue to climb — often due to infrastructure issues, insufficient monitoring, and a lack of evidence-based guidance. 

Inside an Outbreak Investigation 

From the first call at 4:30 on a Friday to the coordination between local health departments, state agencies, and the CDC, Krause explains the rigorous (and sometimes chaotic) process of pinpointing outbreak sources. He also reveals why public communication can make or break an outbreak response. 

Introducing LIDO Technology 

Rather than relying solely on chemical disinfection, LIDO uses gas transfer membrane contactors to remove dissolved oxygen from hot water systems. Legionella can’t thrive below 0.3 ppm DO — meaning systems treated with LIDO create an inhospitable environment for growth. Krause shares lab results, pilot project findings, and how this approach could extend system life while reducing corrosion and byproducts.

The Bigger Picture 

This episode goes beyond technology — it’s about rethinking water management, building better outbreak communication, and challenging industry norms. Whether you’re a facility manager, water treater, or public health professional, Krause’s insights will shift the way you think about Legionella control.  

Prevention starts with awareness — and action. Dr. Krause’s work shows there’s more than one path to safer water systems, and innovation comes from asking better questions. 

Listen now to discover how Legionella investigations unfold and how LIDO technology could reshape prevention. Download the free discussion guide located at Connect with the Guest section, and start the conversation with your team. 

Stay engaged, keep learning, and continue scaling up your knowledge! 

 

Timestamps  

02:24 - Trace Blackmore shares an Introduction to Legionella Awareness Month and the value of ANSI/ASHRAE 188, ASSE 12080 certification 

08:17 - Water You Know with James McDonald 

11:52 - Interview with Dr. David Krause and his background in public health, toxicology, and Legionella Investigations  

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