When you are in the shower, remember to avoid drinking, swallowing or rinsing your mouth with unfiltered water. A water filter can reduce your potential risk of being exposed to the parasite, but it does not eliminate all risk. This is the cheapest way to eliminate your risk of being exposed to Cryptosporidium through water if you do it properly. If you live at sea level, boiling your water for 1 full minute will kill Cryptosporidium . If you live more than 6,500 feet above sea level, you need to boil your water for 3 minutes.
Boiling water is easy.
You can store boiled water in clean, disinfected plastic bottles in the refrigerator and use the water to make ice. Again, avoid drinking, swallowing or rinsing your mouth with unboiled water when you are in the shower. Always drink and brush your teeth with boiled water. Use bottled water Bottled water can be safe, but using it all the time for cooking, brushing your teeth and drinking can get expensive. There are no regulations for bottled water.