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Stagnant Swimming Pool Water: Here are the Risks

On May 21, 2018

Stagnant Swimming Pool Water Here are the Risks

A swimming pool can be a great addition to your home, but without regular and routine maintenance, it can become a danger. Stagnant swimming pool water poses serious health hazards. Without proper coverings, filtration, and treatment; you'll have stagnant swimming pool water running through your hands.

Consider these Health Risks Before You Allow Stagnant Swimming Pool Water in Your Backyard:


Stagnant water anywhere is a breeding ground for mosquitoes. These pests are a nuisance, but they also carry disease. If you let your pool water become stagnant, you risk infection from mosquito-borne illness.

These include:

West Nile virus

  • Many people display no symptoms of this virus. Those who do may experience fever,
    headache, diarrhea, skin rashes, and, in rare cases, severe neurological side
  • Symptoms include chills, high fever, sweating, and potential headaches, vomiting, and diarrhea. Malaria symptoms typically take several weeks to show up, and the parasite can lie dormant in the body for up to one year.
 Dengue fever
  • Symptoms include joint pain, fever, chills, and loss of appetite. In severe cases, symptoms include bleeding and vomiting and are signs that you should seek emergency care.
 Septic arthritis
  • Septic arthritis is a joint infection that results in severe pain. The joint may be swollen or red and feel tender to the touch. Septic arthritis can occur from a mosquito-borne virus.
 Viral Encephalitis
  • This dangerous inflammation of the brain carries few obvious symptoms. Typical patients experience mild flu-like symptoms of fever, fatigue, and muscle weakness. Severe symptoms include loss of sensation, temporary paralysis, and the onset of seizures.
  • The risks of stagnant swimming pool water don't only apply to humans, but also mosquitoes may transmit deadly diseases such as heartworm and tapeworms to your furry friends.


  • Stagnant water breeds more than mosquitos. Certain strains of bacteria also thrive in poorly-maintained pools. Bacterial health risks include:
 E. coli
  • Escherichia coli bacteria enjoys moist environments. Most strains won't do too much harm beyond a brief bout of diarrhea, but severe versions cause severe cramping, bloody stool, and vomiting. A severe strain of e. coli will warrant a trip to the doctor.
  • This condition results in bloody diarrhea and stems from an infection of Shigella bacteria.
  • Rare in industrialized countries. Symptoms include severe diarrhea and dehydration and require immediate emergency care. If left untreated, a case of cholera can become fatal within hours.

Maintenance and Prevention

You can prevent your pool water from stagnating and breeding diseases by making sure you have a filtration system for your pool, and that it's working correctly. Perform routine checks of all your pool parts. If you find a leak that is a clear sign your pool requires repair.

Routinely Check:

  •  Filtration pump
  •  Filter
  •  Sanitizer
  •  Inlets
  •  Skimmer
  •  Main drain

As long as everything is in working order, mosquitoes should not be able to use your pool water to breed, and the sanitizer will provide chemicals to kill any stray bacteria.

Keeping your pool covered when not in use can also prevent mosquitoes breeding or untreated rainwater from contaminating the surface. However, mosquitoes only need an inch of standing water to lay eggs. So, you’ll want to make sure your pool cover is clear from standing water as well.

A well-maintained pool is a pool that you'll be able to enjoy to the fullest. Simple maintenance will ensure your pool water is safe and not stagnant. Contact Aquaman Leak Detection to keep your pool in tip-top shape and avoid stagnant pool water.

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By Aquaman

We now proudly serve all of Florida. Each of our trained and certified pool leak detection specialists utilize the most advanced methods and technologies.

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