Algarve

It depends on the town. 12 of 16 listed water systems in Algarve, Portugal are low risk (75%).

• 12Low
• 4Medium
• 0High
• 0Critical

• AlbufeiraLow risk
• AlcoutimMedium risk
• AljezurMedium risk
• Castro MarimMedium risk
• FaroLow risk
• LagoaLow risk
• LagosLow risk
• LouléLow risk
• MonchiqueLow risk
• OlhãoLow risk
• PortimãoLow risk
• SilvesLow risk
• São Brás de AlportelLow risk
• TaviraLow risk
• Vila do BispoMedium risk
• Vila Real de Santo AntónioLow risk

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.