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88% of healthcare-associated Legionnaires’ disease cases affected adults aged 60 and older, with most exposures traced to long-term care and senior living facilities.

According to the CDC, no single control measure, including chemical disinfection, can ensure Legionella elimination. CDC recommends layered protection for controlling Legionella in water systems, combining chemical disinfection with certified point-of-use ultrafiltration to achieve reliable, continuous control.

Healthcare facilities, including nursing homes, hospitals, assisted living communities, and rehabilitation centres, accounted for 53% of all water-related outbreaks, and Legionella bacteria alone were responsible for 52%.

Even well-designed plumbing systems can become breeding grounds for Legionella if installation and maintenance practices overlook key details. Here are 5 common mistakes that compromise water safety and how to prevent Legionella in water systems using industry best practices and certified filtration systems.

Water filters may look the same on the outside, but inside, the difference between certified and uncertified can mean the gap between compliance and costly failure. Uncertified filters can lead to costly failures, callbacks, and even compliance violations. Certified water filters are independently tested to ensure performance, safety, and durability under real-world conditions.

Legionella prevention has become a top priority in U.S. facilities, as reported cases of Legionnaires’ disease have continued to rise since 2000. Most outbreaks are linked to building water systems such as showers, faucets, and cooling towers, everyday fixtures that can quietly harbor bacterial growth.

According to the Centers for Disease Control and Prevention (CDC), reported cases of legionellosis in the U.S. increased by 300% between 2000 and 2014. The wrong filter choice can lead to clogged lines, performance failures, or even regulatory penalties, putting both the facility and its occupants at risk.

Untreated dental units cannot reliably produce water that meets drinking water standards, defined as fewer than 500 CFU/mL of heterotrophic water bacteria. 

Recently, a nursing home in Trumbull, Connecticut, was fined nearly $285,000 after inspectors discovered that poor Legionella control had put residents in immediate jeopardy.

According to the CDC, Legionella-associated outbreaks account for 97% of hospitalizations and 98% of deaths from reported waterborne disease outbreaks.