Buenos Aires (AySA service area)
Tap water in Buenos Aires (AySA service area) is medium risk. Usually fine, but some tests failed.
Is it safe?
AySA
Medium risk
Usually fine, but some tests failed
99.41% of bacteria tests passed across AySA’s whole service area (99.87% in the original area).
79.82% of nitrate tests passed across the whole area (97.01% in the original area).
98.41% of all drinking-water tests passed in 2023.
The regulator reports these figures for the service area as a whole, not district by district.
Source
AySAM monthly reports to EPAS (Mendoza) and ERAS benchmarking report 2023 (AySA).
Period covered: 2023 to 2025.
Argentina has no national water-test database. These pages include only places whose water company or regulator publishes results. Mendoza towns use AySAM’s monthly bacteria reports for six months of 2025. Buenos Aires uses ERAS figures for AySA’s whole service area, which are not published district by district.
Common questions
Can I drink the tap water in Buenos Aires (AySA service area), Buenos Aires (AySA)?
Tap water in Buenos Aires (AySA service area) is medium risk. Usually fine, but some tests failed.
Where do these ratings come from?
AySAM monthly reports to EPAS (Mendoza) and ERAS benchmarking report 2023 (AySA). Period covered: 2023 to 2025.