Can You Drink Tap Water in Greece? (2026) Safety Guide

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Key Statistics

Water Infrastructure & Supply

Greece's water supply system has developed significantly since the mid-20th century, with EYDAP (Athens Water Supply and Sewerage Company) serving the greater Athens metropolitan area with water from the Marathon, Mornos, and Evinos reservoirs. Thessaloniki is served by EYATH, which draws water primarily from the Aliakmonas River. Both utilities deliver water that meets EU Drinking Water Directive standards, with rigorous testing protocols.

The mainland water infrastructure relies on large-scale reservoir systems, modern treatment plants, and extensive distribution networks. Athens's water undergoes multi-stage treatment including coagulation, sedimentation, sand filtration, ozonation, and chlorination before distribution. However, the age of distribution pipes in some older urban neighborhoods can occasionally affect taste and lead to localized quality concerns.

On the Greek islands, the situation is markedly different. Many islands depend on desalination plants, water tanker shipments from the mainland, or limited local wells. The Greek government and EU structural funds have invested heavily in upgrading island water systems, including new desalination units on Santorini, Mykonos, Paros, and other popular tourist destinations. Despite these improvements, water on many smaller islands remains brackish or of inconsistent quality, and locals commonly rely on bottled water for drinking.

Contamination & Health Risks

In mainland cities like Athens and Thessaloniki, tap water poses minimal health risks and is regularly tested for compliance with EU standards. The primary concerns are related to aging distribution infrastructure in some older buildings, where lead or corroded pipes could leach contaminants into the water. Chlorination byproducts (trihalomethanes) are monitored but occasionally detected at elevated levels in areas with high organic matter in source water.

In agricultural regions such as Thessaly and parts of the Peloponnese, nitrate contamination from fertilizer runoff has been documented in groundwater sources. Some rural wells exceed the EU limit of 50 mg/L for nitrates, posing risks particularly for infants and pregnant women. Travelers visiting rural areas should inquire about the water source before drinking from the tap.

On many Greek islands, the health risks for travelers are more significant. Desalinated water, while generally safe, can have an unpleasant taste and may contain elevated sodium levels. On very small islands without desalination, water tanker deliveries stored in cisterns can develop bacterial contamination if not properly maintained. Travelers with sensitive stomachs may experience gastrointestinal discomfort when switching between water sources, and bottled water is the safer choice throughout the Cyclades, Dodecanese, and smaller Aegean islands.

Regional Water Quality Breakdown

Practical Tips for Travelers

• In Athens, tap water is excellent and safe to drink , save money by filling a reusable bottle from the tap rather than buying bottled water.
• On Greek islands, always ask your accommodation whether the tap water is drinkable. The phrase is ' ;' (Bor na pi ner ap ti vrsi?) meaning 'Can I drink water from the tap?'
• At restaurants, you can order bottled water by saying ' , ' (na boukli ner, parakal) , meaning 'A bottle of water, please.' Specify '' (skto) for still or ' ' (me anthrakik) for sparkling.
• Carry a filter bottle such as a LifeStraw or Grayl when island-hopping , it provides peace of mind when tap water quality is uncertain and reduces plastic waste.
• In older Greek buildings and hotels, let the tap run for 10, 15 seconds before filling your glass, as stagnant water in old pipes may have a metallic taste.
• Ice in drinks at established restaurants and hotels throughout Greece is typically made from purified or treated water and is safe to consume, even on the islands.
• Buy water in bulk from major supermarkets like Sklavenitis or AB Vassilopoulos , prices are significantly lower than at kiosks and tourist shops, especially on the islands.
• Look for public water fountains (/vrses) in Athens and other mainland cities , many are connected to the municipal supply and provide fresh, safe drinking water for free.

Bottled Water Availability & Cost

Bottled water is widely available throughout Greece at supermarkets, kiosks (periptera), convenience stores, and restaurants. Popular Greek brands include Zagori, Vikos, Avra, and Samaria, known for their high-quality natural spring sources. A 500ml bottle typically costs 0.30, 0.70 at a supermarket and 1.00, 2.00 at a tourist-area kiosk. A 1.5L bottle ranges from 0.30, 0.80 at supermarkets. In restaurants, a 500ml bottle usually costs 1.50, 3.00, while sparkling water brands like Souroti cost slightly more.

Buying in bulk from supermarkets like Sklavenitis, AB Vassilopoulos, or Lidl is the most economical option, 6-packs of 1.5L bottles can be found for 2.00, 3.50. On the islands, prices tend to be 20, 40% higher due to shipping costs. Travelers concerned about sustainability should consider bringing a reusable filter bottle, as Greece has been working to reduce plastic waste in line with EU directives. Some hotels and accommodations now offer filtered water stations, and Athens has installed public drinking water fountains in several central locations.

Frequently Asked Questions