Oliveira de Frades
Tap water in Oliveira de Frades is medium risk. Usually fine, but some tests failed or were missed.
Is it safe?
CM de Oliveira de Frades
Medium risk
Usually fine, but some tests failed or were missed
Safe-water score 98.33% in 2025. It was 98.58% in 2024.
Supplied by CM de Oliveira de Frades.
About 9,506 people. 2,036 tests.
Over a limit at least once in 2025: pH (acidity), Aluminium, Clostridium bacteria, Manganese, Chlorate, Iron.
Hardness: Soft (1.2 °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 Oliveira de Frades, Centro?
Tap water in Oliveira de Frades is medium risk. Usually fine, but some tests failed or were missed.
Where do these ratings come from?
ERSAR, Portugal’s water regulator (RASARP 2026). Period covered: 2025.