Is Tap Water Safe to Drink in Chile?

Chile's urban water supply is privatized. Aguas Andinas serves Greater Santiago from the Maipo River, ESVAL covers Valparaíso, ESSBIO serves the Bío Bío region, and other regional concession holders cover the rest of the country.

Naturally occurring arsenic is the main concern in northern Chile (Antofagasta region), where volcanic geology historically caused elevated levels. Modern treatment plants have addressed this in cities. Chilean standard NCh 409 covers 43 quality parameters.

Santiago and central Chile have safe, well-treated tap water. Northern Chile (Atacama, Antofagasta) has historically elevated arsenic; cities have modern treatment, but remote villages may still face issues. Southern Chile and Patagonia have some of the purest water on the continent.

Hard in Santiago (180+ mg/L from Andean rivers), very hard in some northern groundwater areas (130–700 mg/L), soft in southern Chile and Patagonia..

Yes, many Chileans in major cities drink tap water regularly. Chile has water testing comparable to most of Europe, though some prefer bottled water for taste.

• •Tap water is safe in Santiago, Valparaíso, and other major cities, though chlorine and mineral hardness can affect taste
• •In northern Chile, use bottled water in small towns and rural areas where treatment may be less reliable
• •A reusable bottle with a carbon filter can improve taste if you find the mineral content noticeable

• •In northern Chile, verify local water quality before drinking tap, especially in small mining towns
• •Let tap water run briefly before drinking in older buildings