4. Contaminated Water
If you travel often, you probably know you shouldn’t drink the water from certain places. This is particularly true if you are traveling to underdeveloped countries that don’t have water treatment systems. Water in different areas contains different bacteria and parasites. The people who live in these areas and drink the water regularly can tolerate it or may have built of immunity to these things.
People who are traveling to the area haven’t been exposed to these parasites and bacteria and may have a severe reaction to them if they consume them. You shouldn’t drink tap water in a foreign country. If you need to drink water, be sure to drink bottled water.
Even then, you should make sure the bottled water comes from a company that is reputable and that you trust follows normal health regulations in their factory when bottling it. Be careful not to drink any mixed drinks or other products that may contain tap water too.