| | Alternative Medicine | Fasting & Cleansing How hot does water have to be kill cholera? Water must reach a temperature of 149 degrees Fahrenheit (65 degrees Celsius) for at least one minute to kill the cholera bacteria. Fasting & Cleansing - Related Articles Most Effective Candida Cleanse The Effects of Bentonite Clay on the Body About Free Liver Cleansing Diets Colon Hydrotherapy Tips Med route absorption fastest to slowest? What if you forget to fast the day before a colonoscopy? What ingredients are in detox mouthwash?