Waterborne diseases such as cholera, diarrhoea, hepatitis A, typhoid, and polio can all be contracted by drinking contaminated water. At least 2 billion people around the world drink water that has been contaminated with feces. Make sure the water you’re drinking is safe by checking with your water concessionaire and water refilling station. Boil your water for at least one minute if you don’t know where your water comes from. This will kill hazardous bacteria in the water. Allow it to cool completely before drinking.