Diseases associated with water hoses are primarily caused by breathing in fine water mists (aerosols) containing harmful bacteria or amoebas.
Legionella bacteria cause Legionnaires' disease, a serious and sometimes fatal form of pneumonia.
Legionnaires' disease is usually contracted by breathing in small, contaminated water droplets (mist or aerosol) that contain Legionella bacteria. It is not spread person-to-person.
Many homeowners don't realise how ill they can become if the water in the hosepipe “backflows” into their drinking water supply, or becomes contaminated by the potentially lethal bacteria which causes Legionnaires' disease.
Legionnaires' disease symptoms typically develop 2 to 10 days (but sometimes up to 14 days) after exposure to the Legionella bacteria. In most cases, the initial flu-like signs and pneumonia symptoms appear within 5 to 6 days.
The first signs of Legionnaires’ disease typically appear 2 to 14 days after exposure to Legionella bacteria. Early symptoms are often flu-like and include:
Legionnaires' disease requires immediate medical intervention; without antibiotics, symptoms typically worsen during the first week, leading to fatal respiratory, kidney, or multi-organ failure.
Legionnaires’ disease is an acute respiratory infection caused by Legionella bacteria. To combat it, you need medical intervention to eliminate the bacteria inside the body, and environmental maintenance to kill the bacteria in water sources.
In the case of showers, water serving the shower should be stored at 60 degrees Celsius, dropping to a minimum 50 degrees Celsius (55 degrees Celsius in healthcare) at the shower head. This ensures that Legionella bacteria are killed before entering the shower.
Legionella bacteria naturally occur in freshwater environments like lakes and streams, but pose the greatest health risk when they grow in human-made water systems. You are most likely to encounter them in large-scale plumbing networks and devices that create breathable water mist.
Legionella was discovered after an outbreak in 1976 among people who went to a Philadelphia convention of the American Legion. Those who were affected suffered from a type of pneumonia that eventually became known as Legionnaires' disease.
Yes, you can contract Legionnaires' disease from air conditioners, but it is highly unlikely from standard home window units or car ACs. The risk is almost exclusively associated with large, industrial-scale cooling towers in central air conditioning systems that have not been properly maintained.
Preventing Legionnaires' disease at home involves stopping the growth and inhalation of Legionella bacteria. You can achieve this by strictly managing your household water temperatures, regularly flushing and cleaning stagnant fixtures like showerheads and hot tubs, and safely handling gardening soils and potting mixes.
The risk increases with age and some people are at higher risk including:
Unless labeled “drinking water safe,” regular garden hoses may contain materials banned from pipes that carry household drinking water, and many garden hoses can leach chemicals like BPA and phthalates. The material of the hose can also affect the taste of the water, sometimes imparting a plastic or chemical flavor.
Signs your water is making you sick include gastrointestinal distress (diarrhea, nausea, vomiting, stomach cramps), persistent headaches, unexplained fatigue, and fever. These point to bacteria (like E. coli) or chemical contaminants. Skin rashes, a metallic taste, or a rotten egg smell can also indicate unsafe water.
The 4-minute shower rule is a sustainability and cost-saving initiative advising people to limit their daily showers to four minutes or less. This practice helps conserve water, reduce energy used for heating, and lower household utility bills by limiting consumption to approximately 36–40 liters (roughly 9.6–10.5 gallons) per shower.
Run your shower for 5 to 10 minutes to flush out stagnant water. If the property has been vacant for several weeks, some experts recommend running it for up to 20 minutes.
Chlorine dioxide is a powerful oxidizing disinfectant that is particularly effective against Legionella bacteria. It has the ability to penetrate biofilms, which are protective layers of bacteria that can shield Legionella from other disinfectants.
Legionnaires' disease mostly involves the lungs. But it can cause infections in sores and in other parts of the body, including the heart.
Legionnaires' disease is usually contracted by breathing in small, contaminated water droplets (mist or aerosol) that contain Legionella bacteria. It is not spread person-to-person.
Legionella can survive in low temperatures but thrive at temperatures between 20oC and 45oC. If your home has been empty for a while e.g. after a holiday, flush the whole water system for 3 minutes or more e.g. open kitchen taps, bath, wash hand basin, shower and flush toilet.
Yes, you can get Legionnaires’ disease from a CPAP machine. While uncommon, medical cases confirm that if the equipment (especially the humidifier) is improperly maintained or uses contaminated tap water, it can harbor and aerosolize Legionella bacteria. Inhaling these water droplets directly causes the infection.
Legionella bacteria are killed through specific physical and chemical methods, primarily focusing on extreme temperatures and strong disinfectants.
Legionnaires' disease was first officially recognized and named in July 1976 at the Bellevue-Stratford Hotel in Philadelphia, Pennsylvania. An outbreak of a mysterious and severe pneumonia sickened over 200 American Legion convention attendees, resulting in 34 deaths.