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You Can Prevent Cryptosporidiosis

If you choose to buy a filter, look for this information on the label: continued...

Water labeled as follows has been processed by method effective against crypto:

  • Reverse osmosis treated
  • Distilled
  • Filtered through an absolute 1 micron or smaller filter
  • "One micron absolute"

Water labeled as follows may not have been processed by method effective against crypto

  • Filtered
  • Micro-filtered
  • Carbon-filtered
  • Particle-filtered
  • Multimedia-filtered
  • Ozonated
  • Ozone-treated
  • Ultraviolet light-treated
  • Activated carbon-treated
  • Carbon dioxide-treated
  • Ion exchange-treated
  • Deionized
  • Purified
  • Chlorinated

C. Bottled water: If you drink bottled water, read the label and look for this information: Bottled water labels reading "well water," "artesian well water," "spring water," or "mineral water" do not guarantee

that the water does not contain crypto. However, water that comes from protected well or protected spring water sources is less likely to contain crypto than bottled water or tap water from less protected sources, such as rivers and lakes. Any bottled water (no matter what the source) that has been treated by one or more of the methods listed in the top part of the water filters table (p. 8) is considered safe.

D. Home distillers: You can remove crypto and other germs from your water with a home distiller. If you use one, you need to carefully store your water as recommended for storing boiled water.

E. Other drinks: Soft drinks and other beverages may or may not contain crypto. You need to know how they were prepared to know if they might contain crypto. If you drink prepared drinks, look for drinks prepared to remove crypto:

Crypto killed or removed in preparation:


  • Canned or bottled soda, seltzer and fruit drinks



  • Steaming hot (175 degrees F or hotter) tea or coffee


Crypto may not be killed or removed in preparation:


  • Fountain drinks



  • Fruit drinks you mix with tap water from frozen concentrate



  • Iced tea or coffee


Juices made from fresh fruit can also be contaminated with crypto. Recently several people became ill after drinking apple cider made from apples contaminated with crypto. You may wish to avoid unpasteurized juices or fresh juices if you do not know how they were prepared.

8. Take extra care when traveling.If you travel to developing nations you may be at a greater risk for crypto because of poorer water treatment and food sanitation. Warnings about food, drinks, and swimming are even more important when visiting developing countries. Avoid raw fruits and vegetables, tap water or ice made from tap water, unpasteurized milk or dairy products, and items purchased from street vendors. These items may be contaminated with crypto. Steaming-hot foods, fruits you peel yourself, bottled and canned processed drinks, and hot coffee or tea are probably safe. Talk with your health care provider about other guidelines for travel abroad.

WebMD Public Information from the CDC


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