Is Tap Water Safe to Drink in Bolivia?

In La Paz and El Alto, the utility EPSAS draws from high-altitude reservoirs and glacial-fed sources in the Andes, including the Hampaturi and Incachaca systems. Santa Cruz is served by SAGUAPAC, drawing on groundwater wells, while rural and Altiplano communities often rely on untreated wells, rivers, or glacial meltwater.

Even where water is chlorinated, aging distribution networks and inconsistent monitoring mean contamination risk remains real in cities, and it is significantly higher in rural highland and Amazon-basin communities with minimal treatment infrastructure. Bolivia's retreating glaciers have also raised concerns about water security in La Paz's supply long-term.

La Paz and Santa Cruz have the country's most developed systems, but tap water there is still not recommended for direct drinking by travelers. Rural Altiplano villages, Lake Titicaca-area communities, and Amazon lowland towns carry higher contamination risk due to minimal or no treatment.

Andean source water tends to be moderate in hardness, roughly 100–200 mg/L, reflecting mineral-rich glacial and highland geology..

Most Bolivians boil tap water before drinking or rely on bottled water, particularly in rural and high-altitude areas.

• •Drink bottled or boiled water throughout Bolivia, including in La Paz and Santa Cruz
• •At high altitude, boil water longer than at sea level, since water boils at a lower temperature and needs more time to disinfect
• •Carry water purification tablets or a filter for trekking in the Andes or visiting remote Amazon basin communities

• •Boil tap water for longer than usual at high altitude to ensure disinfection
• •Default to bottled water when trekking or visiting rural Andean and Amazon communities