In 2012, The Preventative Health Center in Ho Chi Minh City announced that 80% of all communicable diseases in the city are caused by unfiltered contact with the water supply—including cholera, dysentery, hepatitis A, paralysis, skin diseases, eye problems, tuberculosis, and poisoning from microorganisms. For now, home water treatment is essential in order to safely use water here.
Don’t drink from the tap, and brush your teeth with safe water. Drink plenty of bottled water on a daily basis to stay hydrated. Also drink plenty of fruit juices with ice cubes made from boiled or bottled water. Be aware that ice cubes and crushed ice used in drinks sold on the street are not always produced hygienically.