Legionella Resource Center

The Only Guide You Need on Legionella in Water Systems

Read Our Guide Below to Find Out All You Need to Know about Legionella Disease.

Most outbreaks of the disease are happening in large buildings such as schools, hotels, gyms, restaurants, factories, and other commercial and property management buildings, where the bacteria has grown and spread throughout the water system. Many of these types of buildings were closed for long periods of time due to COVID lockdowns, and now as they begin to re-open, we’re seeing a spike in cases of Legionnaires’ Disease across the country. In hospitals and nursing homes especially, where germs spread with ease and patients are vulnerable to infection—Legionnaires’ Disease can present a significant danger. Intellihot is committed to combating the rise of Legionella bacteria in buildings by providing information and products to keep you safe.

Legionella Prevention

What Is Legionella?

Legionella is the name of a category of bacteria responsible for causing the so-called Legionnaires’ disease. This is a serious form of pneumonia that can be particularly harmful to certain groups of people.

How Does Legionella Spread?

Legionella is found in freshwater areas, such as lakes, rivers, and streams. If present in very small concentration, it doesn’t tend to cause any problem. However, when this bacteria grows and enters residential or commercial water systems, it can become a concern.

Legionella bacteria can infiltrate building water systems, including faucets, showerheads, hot tubs, fountains and water features, hot water tanks, and thrives in old, stagnant water.

What Are the Symptoms of Legionella?

Not everyone who is exposed to the bacteria automatically contracts the disease or manifests any symptoms. Those who do can develop two different types of illnesses: Legionnaires’ disease and Pontiac fever.

Legionnaires’ Disease

This illness is a type of lung infection very similar to pneumonia. Symptoms can include cough, fever, headaches, difficulty breathing, and body aches. Less frequently, this disease can manifest itself through other symptoms, such as nausea, diarrhea, and confusion.

Symptoms tend to appear two to ten days after contact with the bacteria, although they have been known to begin as late as two weeks after exposure.

Pontiac Fever

This is a milder type of illness compared to Legionnaires’ disease, and it’s not a lung infection. The main symptoms of Pontiac Fever are high temperature and body aches. Its onset is also different from Legionnaires’ disease, as it generally occurs between a few hours to three days after exposure. 

Who Is More at Risk of Developing Serious Legionella Symptoms?

As we mentioned earlier, not everyone who gets exposed to the Legionella bacteria will get sick. In fact, if you are young and generally fit and healthy, chances are that you will be fine. Some people, however, are at higher risk of developing serious symptoms, and these include the elderly, immuno-compromised people, smokers, people with a chronic illness or with cancer, and people with underlying health conditions.

What Can You Do to Prevent Legionella?

To prevent both Legionnaires’ disease and Pontiac Fever, it’s imperative to reduce and control the risk of Legionella growth and transmission in water systems. You can achieve this by making sure that your building water systems are clean and well-maintained, as well as monitor your water regularly for Legionella bacteria. Legionella bacteria thrive in old, stagnant waters, so you should always ensure that the water you use in your building is always fresh and running.

Conditions for Legionella Growth

How can tankless water heaters mitigate my risks?

  • Constant Turbulence

    Using advanced flow control, tankless units keep the water moving.

  • Tankless Technology

    No water is stored, eliminating the bacteria and bio-film risks posed by stored, or stagnant water.

  • High Temperatures & Monitoring

    Intellihot intelligent tankless systems keep your water temp set above 120 degrees with monitoring available from an easy-to-use mobile app, that allows you to monitor temperatures at all times.

How Can Intellihot Help?

Founded in 2009 in Peoria, Illinois, we are a clean technology, IoT company that builds and sells smart water devices and commercial tankless water heaters that help our customers cut costs and downtime.

Our mission is to advocate for and educate in proactive water safety measures and tankless water heating systems as long-term solutions to mitigate the risk posed by legionella in water systems.

We achieve this with our tankless water heaters. These products use advanced flow control and other technology to keep the water moving, removing the risk of any stagnant water. Our systems also keep water at a constant high temperature, which further increases safety and eliminates the growth of any harmful bacteria.

Did You Know?

Legionella was first identified in 1976 after an outbreak at an American Legion convention in Philadelphia. The bacteria was found in the water system and affected 183 people, resulting in 24 deaths. Temperature is always a critical factor in the colonization of Legionella.

Legionella 1976

Ready To Mitigate Your Legionella Risks?