Is Tap Water Safe to Drink in Greece?
Yes, tap water is safe to drink in Athens and most mainland cities, but many Greek islands rely on desalinated or trucked-in water and bottled water is commonly recommended there.
Water Source
Athens and mainland cities are supplied by EYDAP from reservoirs like Lake Marathon and Lake Mornos, treated to EU standards. Many islands depend on desalination plants or water shipped from the mainland.
Contaminants & Concerns
No significant health concerns on the mainland. On islands, taste and mineral content vary a lot due to desalination, and infrastructure can be strained in peak summer season.
Regional Variations
Safe in Athens, Thessaloniki, and mainland Greece. On islands such as Santorini, Mykonos, and many Cyclades islands, tap water is often not recommended for drinking due to desalination byproducts and salty taste — bottled water is standard there.
Water Hardness
Moderate to hard on the mainland (150–300 mg/L); island desalinated water is typically low in natural minerals but can taste salty..
Do Locals Drink Tap Water?
Mainland residents generally drink tap water; island residents commonly rely on bottled or filtered water.
Tips for Travelers
- •In Athens, tap water is genuinely good and safe
- •On islands like Santorini and Mykonos, default to bottled water
- •Hotels on islands typically provide or sell bottled water for this reason
Recommended Precautions
Prefer bottled water on Greek islands, especially the Cyclades