Can You Drink Tap Water in Costa Rica?

Tap water in Costa Rica is considered safe to drink in most areas, making it one of the few Central American countries where tourists can generally consume tap water. The Instituto Costarricense de Acueductos y Alcantarillados (AyA) operates water treatment systems throughout much of the country and water quality meets international standards in major cities and tourist areas. In San José, Heredia, Alajuela, and other Central Valley cities, tap water is treated with chlorine and fluoride and is safe for consumption.

Most Costa Ricans in these areas drink tap water without concern. Popular tourist destinations including Manuel Antonio, Monteverde, La Fortuna (Arenal), Tamarindo, and Jacó generally have safe tap water, though quality can vary by specific property. Many hotels and restaurants use filtration systems as an extra precaution.

However, water safety is less reliable in remote areas, on the Caribbean coast, and in some rural beach towns. Areas like Puerto Viejo, Cahuita, and the Osa Peninsula may have less consistent water treatment. Some properties in these regions rely on well water or local systems that may not be adequately treated.

During heavy rains and flooding, water quality can temporarily decline even in normally safe areas. Travelers with sensitive stomachs may still prefer bottled water even in areas with treated tap water. If you're staying in eco-lodges, remote beaches, or rural areas, verify water safety with your accommodation.

Some properties have filtration systems while others recommend bottled water. Costa Rica's generally good water quality is a significant advantage over neighboring countries, but caution in remote areas is still advised.