Olhão
Yes. Tap water in Olhão is low risk. Safe to drink from the tap.
Is it safe?
AMBIOLHÃO
Low risk
Safe to drink from the tap
Safe-water score 99.69% in 2025. It was 99.45% in 2024.
Supplied by AMBIOLHÃO.
About 42,441 people. 640 tests.
Over a limit at least once in 2025: Coliform bacteria, Nickel.
Hardness: Soft (8.2 °f).
Source
ERSAR, Portugal’s water regulator (RASARP 2026).
Period covered: 2025.
Covers all 278 municipalities in mainland Portugal. The safe-water score is the share of required tests that were done and met the legal limits in 2025. 99% or above is rated low risk. Hardness is the typical level measured by the main supplier.
Common questions
Can I drink the tap water in Olhão, Algarve?
Yes. Tap water in Olhão is low risk. Safe to drink from the tap.
Where do these ratings come from?
ERSAR, Portugal’s water regulator (RASARP 2026). Period covered: 2025.