Legionella Testing Services

Huntington Beach, California, September 17, 2026

 

Reports earlier this year of a Legionella outbreak linked to a hospital in Santa Clara County have again highlighted the serious health risks associated with contaminated building water systems. Published reports indicate that at least 18 people were infected as health officials investigated the source of the bacteria and implemented additional water treatment measures. 

Legionella bacteria can grow in cooling towers, potable water systems, hot water tanks, decorative fountains, spas, and other building water systems under favorable conditions. Exposure typically occurs when people inhale contaminated water droplets or mist. Legionnaires’ disease, a severe form of pneumonia, can pose significant risks to older adults, smokers, and those with weakened immune systems.

The Santa Clara investigation reportedly involved environmental testing and enhanced mitigation efforts to identify the contamination source and reduce exposure risks. Rapid detection and response are critical to limiting the spread of Legionella in healthcare settings and other large facilities.

“Legionella outbreaks underscore the importance of routine environmental monitoring and proactive water management programs,” said Michael Chapman, Laboratory Manager of LA Testing’s Huntington Beach facility. “Identifying contamination early can help building owners and facility managers address potential hazards before illnesses occur.”

LA Testing provides Legionella laboratory testing services for hospitals, commercial buildings, schools, hotels, industrial facilities, and property management companies throughout California. The company analyzes water samples, biofilm, and other environmental materials to help identify Legionella contamination and support remediation and infection control efforts.

In suspected outbreaks, rapid environmental testing can help investigators identify contamination sources and evaluate corrective actions. Routine monitoring and water management strategies can also help organizations comply with industry guidance and reduce risks associated with building water systems.

For more information about Legionella testing or other environmental services, please visit www.LATesting.com, email info@LATesting.com, or call (800) 755-1794. Test kits are available from www.EMSLTestKits.com.

 

LA Testing is California’s leading laboratory for indoor air quality testing of mold, asbestos, lead, VOCs, formaldehyde, soot, char, ash and smoke damage, particulates, and other chemicals. In addition, LA Testing offers a full range of air sampling and investigative equipment to professionals and the public. LA Testing maintains an extensive list of accreditations including: AIHA LAP LLC., AIHA ELLAP, AIHA EMLAP and AIHA IHLAP, CDC ELITE, NVLAP, State of California, State of Hawaii Department of Health, and other states. LA Testing, along with the EMSL Analytical, Inc. network, has multiple laboratories throughout California, including South Pasadena, Huntington Beach, San Leandro, and San Diego.