Brian Barton
Public water fountains have received a bad reputation over the last few decades, with 77% of Americans expressing concern about the pollution in their water. While water fountains are generally safe, they can become contaminated, making them potential sources of harmful bacteria, viruses, and other pathogens. The most common forms of bacteria found in school water systems include Legionella, E. coli, Giardia, Norovirus, and more. In addition to biological contaminants, water fountains can also contain chemical pollutants and heavy metals such as lead. Poor maintenance, inadequate cleaning, and stagnant water can further increase the risk of contamination. While newer water fountain models often include filtration systems, they may not effectively remove all contaminants, and regular disinfection is essential to maintain sanitary conditions.
| Characteristics | Values |
|---|---|
| Germs/Bacteria | Legionella, E. coli, Giardia, Norovirus, Influenza A virus, and more |
| Contaminants | Improper cleaning/maintenance, aging infrastructure, lead pipes |
| Health Risks | Infections, illness, flu-like symptoms, upset stomach, aches, severe infection |
| Maintenance | Regular disinfection, proper maintenance, water quality testing |
| Filters | Sediment, activated carbon, UV purification |
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Bacteria and viruses
Water fountains have increasingly gained a bad reputation, with 77% of Americans concerned about the pollution in their water, causing a decline in the use of public water fountains. This concern is understandable, as water fountains can be a breeding ground for bacteria and viruses.
Secondly, the surfaces of water fountains, including the toggles, handles, and bowls, can be contaminated with bacteria and viruses. A study found that Influenza A virus and Norovirus were detected on surfaces throughout the day, posing a risk of infection, especially for individuals with compromised immune systems, the elderly, and children. The presence of bacteria and viruses on these surfaces can be attributed to people coughing, sneezing, or spitting on or near the fountain, as well as contact with hands.
Furthermore, the plumbing and pipes connected to water fountains can introduce bacteria into the water. In some cases, city water is run through filters that remove chlorine, but the filters themselves can become contaminated with bacteria, leading to the growth of Legionella, which has been associated with Legionnaire's disease.
Additionally, there is a concern regarding antibiotic-resistant bacteria in water fountains. Studies have detected the presence of fecal coliform bacteria, which can contaminate drinking water and cause public health issues. These bacteria have been found to contain plasmids, which can confer resistance to antibiotics. The ability of bacteria to transfer plasmid DNA to other bacterial species contributes to the challenge of treating infections caused by these organisms.
While the risk of contracting diseases from public drinking water fountains is generally low, it is essential to maintain proper hygiene and sanitation practices. Regular cleaning and maintenance of water fountains are crucial to minimize the presence of bacteria and viruses.
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Poor maintenance
Inadequate maintenance can also result in the accumulation of contaminants in the fountain's water. This includes germs, bacteria, and viruses, which can cause illnesses, especially in individuals with compromised immune systems, the elderly, and children. In addition, external factors such as dust, dirt, and insects can contribute to water fountain contamination if proper maintenance is lacking.
Furthermore, the design of water fountains can impact the likelihood of contamination. The bowl of the water fountain and the parts frequently touched by hands tend to be the most bacteria-rich areas. Poor maintenance of these surfaces can increase the risk of illness transmission.
While public water fountains in developed countries are typically connected to the mains water supply, which undergoes rigorous testing to meet drinking water standards, it is still crucial to ensure proper maintenance of the fountains themselves. This includes regular cleaning, disinfection, and visual inspection for signs of poor maintenance, such as worn-out parts or stagnant water.
Water companies regularly test public water supplies for contaminants, including heavy metals, pathogens, and chemical pollutants, providing transparency and reassurance about water safety. However, it is important to note that not all water fountains are equipped with filtration systems, and the presence of filters does not guarantee the removal of all harmful substances.
To summarise, poor maintenance of water fountains can lead to the growth of bacteria, the accumulation of contaminants, and increased health risks for individuals using them. Ensuring regular and thorough cleaning, disinfection, and maintenance of water fountains is crucial to mitigate these risks and provide safe hydration for the public.
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Lead pipes
Lead enters drinking water through a process known as corrosion, which occurs when lead pipes and plumbing fixtures containing lead dissolve or flake into the water due to a chemical reaction. This reaction is influenced by the water's chemistry, particularly its acidity and mineral content. Water with high acidity or low mineral content can accelerate corrosion, increasing the amount of lead that leaches into the water.
The Safe Drinking Water Act (SDWA) and the EPA's Lead and Copper Rule have been implemented to address this issue. The SDWA has reduced the maximum allowable lead content in pipes, pipe fittings, plumbing fittings, and fixtures. The Lead and Copper Rule mandates corrosion control treatment, requiring utilities to make drinking water less corrosive to prevent lead contamination. Despite these efforts, lead pipes in schools and daycare centres have been found to have dangerously high levels, as seen in the case of Flint, Michigan, where blood-lead levels in children nearly doubled due to inadequate water treatment.
To reduce exposure to lead in water fountains, older pipes and plumbing fixtures should be replaced. Regular maintenance and cleaning of water fountains are also crucial to minimise contaminants. Additionally, using cold water for drinking and cooking is recommended, as boiling water does not remove lead. Running the tap for a while before drinking can help flush out lead that may have accumulated in the pipes.
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Stagnant water
The water can become contaminated with human and animal waste, especially in arid regions or areas with low rainfall. This contamination poses a severe health risk, as it can lead to skin irritation, rashes, and infections, especially for individuals with sensitive skin. Exposure to such tainted water may also result in contact dermatitis, characterised by redness, inflammation, and persistent itching.
Furthermore, stagnant water can contain high levels of chemicals, pesticides, and other pollutants that are dangerous to human health. Ingesting or even simply coming into contact with the water can cause gastrointestinal issues such as diarrhoea, vomiting, and abdominal pain. It can also lead to wound infections if exposed to open wounds or cuts.
The presence of bacteria and other harmful microbial growth in stagnant water can be detrimental to those with weakened immune systems or underlying health conditions. It is important to take precautions to avoid exposure to stagnant water and to maintain proper hygiene practices to prevent potential health risks.
In addition to the health risks, stagnant water can also cause structural damage and erosion to properties. Implementing proper drainage systems and irrigation practices can help prevent the accumulation of stagnant water and mitigate these potential issues.
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Biofilm formation
Biofilms are communities of microorganisms that can form on the surfaces of water fountains. The formation of biofilms on water fountains can have negative implications for human health, as they can harbour and transmit harmful bacteria.
Biofilms can develop on the spouts, basins, and drains of drinking water fountains. These biofilms can then be resuspended and form droplets and aerosols, which can be transferred to people using the fountain. The original design of drinking water fountains, with vertical spouts, was implicated in the spread of contagious diseases. As a result, the design was changed to introduce an acute angle at the flow leaving the spout, and some governments now require water spouts to be as long as four inches to meet health standards.
The water supply can be a source of biofilm microorganisms, which can proliferate on the internal walls of pipes. In addition, humans accessing the water fountain can also be a source of biofilm-associated microorganisms, as microbes from the skin and saliva can be transferred to the fountain surfaces.
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Frequently asked questions
Water fountains can be contaminated with various bacteria, viruses, and heavy metals such as lead.
Water fountains can get contaminated due to poor hygiene practices, inadequate cleaning and maintenance, stagnant water, and contaminated water sources.
Drinking from water fountains can lead to infections and illnesses. Certain individuals, such as pregnant women, children, the elderly, and those with compromised immune systems, are more susceptible to waterborne illnesses.
Water fountains should receive regular cleaning at least every six months, but this may not always be enforced. Proper maintenance and water quality testing are crucial to ensure the safety of the water.
Yes, you can carry your own bottled water or use a water bottle with a built-in filter to refill at a public fountain. Touchless water fountains and bottles with built-in filters are also good alternatives.
