Is Tap Water Safe to Drink in Argentina?
Yes, tap water in Buenos Aires and most major Argentine cities is safe to drink, but some rural provinces (notably parts of the Chaco region) have natural groundwater arsenic issues worth knowing about.
Water Source
Buenos Aires is supplied by AySA from the Río de la Plata with modern treatment; other cities have their own regional utilities of varying capacity.
Contaminants & Concerns
Naturally occurring arsenic in groundwater affects some rural areas of the Chaco-Pampean plain (parts of Córdoba, Santa Fe, and Chaco provinces); municipal systems in major cities test and treat for this.
Regional Variations
Safe in Buenos Aires, Córdoba, Mendoza, and Bariloche. Use bottled water in small rural towns in the northern provinces where groundwater arsenic is a known regional issue.
Water Hardness
Moderate, roughly 100–200 mg/L in Buenos Aires; much softer in Patagonian glacial-fed towns..
Do Locals Drink Tap Water?
Yes, in cities; rural residents in arsenic-affected regions often rely on alternative or treated sources.
Tips for Travelers
- •Buenos Aires tap water is generally reliable and pleasant tasting
- •In Patagonia (Bariloche, El Calafáte), tap and even stream water is often excellent due to glacial sourcing
- •In rural northern provinces, ask locally or use bottled water
Recommended Precautions
Use bottled water in small rural towns in northern arsenic-affected provinces
Cities in Argentina
Frequently Asked Questions
Sources & References
The safety rating and guidance on this page draw on the following sources. See our full methodology.
- •WHO Guidelines for Drinking-water Quality
- •CDC Travelers' Health destination pages
- •WHO/UNICEF Joint Monitoring Programme (JMP)
- •National and municipal water utility public quality reports