In 2026, tourists can safely drink tap water in most of Costa Rica, particularly in urban centers and major tourist destinations like San José, Alajuela, Arenal, Monteverde, and Manuel Antonio. Costa Rica has some of the highest public health and sanitation standards in Latin America, and the government has invested heavily in water treatment infrastructure to ensure that the water in these areas meets international safety standards. In fact, it is estimated that over 90% of the population has access to potable tap water. However, travelers should still exercise caution in remote rural areas or coastal villages (such as parts of the Osa Peninsula or the Caribbean coast), where the water may come from local wells or rivers that aren't consistently treated. In these "off-the-beaten-path" locations, sticking to bottled or filtered water is a wise precaution to avoid any minor digestive upset. A popular "pro-tip" for 2026 is to bring a reusable water bottle with a built-in filter; this allows you to stay hydrated and eco-friendly while enjoying the lush rainforests, knowing that while the water is likely safe, you have an extra layer of protection for your stomach.