Water, Water, Everywhere, But Is It Safe to Swim?
It is a favorite summertime activity for all ages. In fact, swimming or relaxing in recreational water, such as swimming pools, water parks, hot tubs, lakes, rivers, or the ocean is one of the most popular activities in the country. However, swimmers can become affected by recreational water illnesses.
What Causes Recreational Water Illnesses?
In swimming pools, germs, such as Cryptosporidium , E coli,Giardia , Shigella, and ]]>hepatitis A]]> are the most common causes of recreational water illnesses. These germs enter the water primarily through fecal contamination. Exposure to these contaminants usually manifests as ]]>diarrhea]]>. However, contaminated water may also cause skin rashes, ear infections, or respiratory infections.
And while it is true that chlorine does kill these germs, insufficient maintenance of chlorine levels and filtering systems may impact the effectiveness of chlorination. In addition, chlorine takes time to work, even in the most stringently maintained swimming facilities. Cryptosporidium, which is highly resistant to chlorine, may continue to live for several days after a pool has been disinfected.
In lakes, rivers, and oceans, pollution by raw sewage is the largest culprit for water contamination with disease-causing organisms, such as bacteria, viruses, protozoa, and worms. And of course, open water is not chlorinated. This means that your best defense is a good offense, and you should check with your local pollution control authorities regarding water quality at your favorite beach before you go. You can also check the US Environmental Protection Agency’s (EPA) beach watch website at http://www.epa.gov/OST/beaches .
Swimming Pools, Water Parks, and Hot Tubs
In addition to fecal contamination, swimming pools, hot tubs, and water parks may also be contaminated by vomit or blood in the water. The US Centers for Disease Control and Prevention (CDC) publishes guidelines for the maintenance and care of these facilities and recommends procedures to deal with any of the above mentioned types of contamination.
If your favorite spot to relax happens to be a swimming pool, water park, or hot tub, check with the pool’s management and staff to make sure they are aware of these recommendations and have a clear plan for responding to any type of water contamination.
A Day at the Beach
If your favorite water spot is a public beach, here are some questions the EPA suggests you ask your local beach-monitoring official so you can stay safe:
- Which beaches do you monitor and how often?
- Where can I see the test results and who can explain them to me?
- What are the primary sources of pollution that affect this beach?
If your favorite beach is not monitored regularly, here are some things you can do to protect yourself and your family:
- Avoid swimming after a heavy rain.
- Look for storm drains along the beach. Do not swim near them.
- If the waters of your beach have been designated as a no-discharge zone for vessel sewage, check to see if boat pump-out facilities are available and working.
- Look for trash and other signs of pollution, such as oil slicks in the water.
- If you think your local beach is contaminated, contact your local health or environmental protection officials.
- Work with your local authorities to create a monitoring program.
The Six PLEAs for Healthy Swimming
The CDC has published “PLEAs” for healthy swimming to help you protect yourself against recreational water illnesses. Following these six recommendations will go a long way in ensuring everyone has fun in the water this summer!
- Please do not swim, or allow your child to swim, if either of you has diarrhea. Contrary to popular belief, diapers—even those designed for swimming—do not prevent fecal matter from leaking into the water. Allowing your kids to swim with diarrhea, or doing so yourself, may easily spread germs that could make you, your children, or others sick.
- Please do not drink the water, and if possible, try to avoid getting it in your mouth. Children should be instructed that this water is not for drinking.
- Please wash your hands after using the toilet or after changing a baby’s diapers.
- Please take your children to the bathroom often. “Mommy, I have to…” may come too late to prevent an accident.
- Please change your children’s diapers in the bathroom or in a designated changing area, not by the side of the pool.
- Please bathe your children thoroughly before they get in the water. The cleaner your children, the cleaner the water.
United States Centers for Disease Control and Prevention
United States Environmental Protection Agency
Public Health Agency of Canada
Before you go to the beach. United States Environmental Protection Agency website. Available at: http://www.epa.gov/ . Accessed May 19, 2008.
Healthy swimming. United States Centers for Disease Control and Prevention website. Available at: http://www.cdc.gov/healthyswimming. Updated May 2007. Accessed April 26, 2010.
Six steps of healthy swimming. United States Centers for Disease Control and Prevention website. Available at: http://www.cdc.gov/healthyswimming/6_steps.htm. Updated May 2009. Accessed April 26, 2010.
Last reviewed April 2010 by ]]>Brian Randall, MD]]>
Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.
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