![Two Travelers Snorkeling Underwater](https://cdn.passporthealthusa.com/wp-content/uploads/2014/12/travelers-underwater-snorkeling.jpg?x93823)
Water is crucial to human existence, but many places around the world do not have safe drinking water, making travel to those regions difficult and potentially very dangerous without proper preparation. For day seven of Passport Health’s travel tips countdown this holiday season, here are key tips to avoid waterborne illness while on vacation.