Top 10 countries with the safest tap water (2026)

No ranking is undisputed, but these ten countries consistently top the charts — and the CDC/WHO list their tap water as safe:

1. Iceland — pristine spring water, often barely treated. 2. Finland — Finnish tap water is internationally cited as a benchmark. 3. Switzerland — strict monitoring and alpine springs. 4. Norway — 88% from high-quality surface water. 5. Denmark — almost exclusively chlorine-free groundwater. 6. Netherlands — Vewin reports 99.9% compliance. 7. Germany — among the EU's strictest controls (TrinkwV). 8. Austria — over half from mountain springs. 9. New Zealand — excellent quality in major cities. 10. Canada — varies by municipality; metros score top.

Sources: Yale EPI 2024; WHO/UNICEF JMP 2023; CDC Yellow Book 2024.