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Water Quality, E. Coli, and Triathlon

The Seine River has been a hot topic over the last few weeks as the men’s Olympic triathlon was postponed due to water quality concerns. 


The thrill of swimming in natural bodies of water like oceans, lakes, and rivers always comes with its own set of risks. This isn’t unique to the Seine River. Pollution, algae blooms, poor weather conditions, and other factors can render water unsafe to swim in. 


Water quality concerns are not isolated to the Paris Olympics. Many events around the world have navigated water quality and safety issues. 


World Triathlon Water Quality Requirements

The World Triathlon has set comprehensive guidelines for water quality to minimize the risk of infections and illnesses among athletes. These guidelines are based on recommendations from the World Health Organization (WHO) and focus on several key parameters:


Microbiological Quality:

  • Escherichia coli (E. coli): The water should have less than 250 colony-forming units (CFU) per 100 milliliters.

  • Intestinal Enterococci: The water should have less than 100 CFU per 100 milliliters.

These bacteria are indicators of fecal contamination and their presence in high levels can pose serious health risks.


Chemical Contaminants:

Water should be free from harmful chemical contaminants. This includes monitoring for heavy metals, pesticides, and other industrial pollutants that could cause acute or chronic health issues.


Physical Parameters:

  • Water Temperature: Ideally, the water temperature should be between 16°C (60.8°F) and 31°C (87.8°F) to prevent hypothermia or heat stress.

  • Clarity: Water should be sufficiently clear to allow visibility for safety and surveillance purposes.


Harmful Algal Blooms:

The presence of harmful algal blooms, which can produce toxins dangerous to human health, is closely monitored. If these blooms are detected, swimming is prohibited.


Seth Rider says he built tolerance to E. Coli… does it work?

US triathlete Seth Rider is said to have used unconventional strategies to build his E. coli tolerance ahead of the Paris Olympic triathlon, including not washing his hands after using the restroom. (It’s unclear whether he actually did this.)


Can you increase your tolerance to bacteria?

Building resilience against bacterial infections like those caused by E. coli is a complex topic. While the body can develop immunity to certain pathogens, increasing tolerance to harmful bacteria in contaminated water is not straightforward. 


Your immune system is designed to combat pathogens and can adapt to some extent. While there might be theoretical benefits to gradual exposure, there’s no proven strategy, and the risks often outweigh any potential benefits. 


Bacteria can mutate quickly and vary from one body of water to another. So, developing exposure to one strain of bacteria doesn’t necessarily help your body when exposed to another strain of the same bacteria. 


Safe Practices to Prep for Questionable Open Water Swimming Conditions

Increasing your tolerance to E. coli and other harmful bacteria by intentional exposure is not advisable due to the significant health risks involved. Instead of seeking increased exposure to pathogens, focus on enhancing your overall health and immune system:


Good Hygiene Practices: Always wash your hands thoroughly with soap and water, especially after using the bathroom and before eating.


Vaccinations: Stay up to date with vaccinations that can protect you from waterborne diseases, such as Hepatitis A and typhoid fever.


Healthy Lifestyle: Maintain a balanced diet, exercise regularly, get adequate sleep, and manage stress to keep your immune system strong.


Probiotics and Prebiotics: To support gut health, incorporate foods rich in probiotics (like yogurt and kefir) and prebiotics (like garlic and onions).


Risks of Swimming in Contaminated Water

Swimming in water that does not meet the health criteria can expose athletes to a variety of risks, including:

  • Gastrointestinal Illnesses: Contaminated water often contains pathogens like E. coli, Norovirus, and Giardia, which can cause symptoms such as nausea, vomiting, diarrhea, and stomach cramps.

  • Skin Infections: Bacteria and other microorganisms in polluted water can lead to skin rashes, infections, and conditions like swimmer’s itch.

  • Respiratory Issues: Inhaling water contaminated with harmful algal blooms or chemical pollutants can result in respiratory problems, including asthma-like symptoms.

  • Ear and Eye Infections: Waterborne bacteria can cause ear and eye infections, such as swimmer’s ear or conjunctivitis.

  • Long-term Health Effects: Prolonged exposure to water with chemical contaminants can have long-term health implications, including liver and kidney damage, neurological effects, and an increased risk of cancer.

 

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