Is Kos Tap Water Safe To Drink?

Yes! The tap water is safe to drink.

Tap water supplied through the municipal network in Kos is generally considered safe to drink and is subject to Greece’s drinking-water rules, which follow European Union standards. Most healthy adults can drink it.

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Water Sources
Drinking Fountains

The water may have a strong mineral taste, so some residents and visitors prefer bottled water for taste rather than safety. In older buildings, water quality can also be affected by storage tanks or internal plumbing.

Last checked: 2026-10-23

Greece is ranked as number 13 globally with a score of 96.6% in the water quality EPI research conducted by Yale University.

Source of Water in Kos, Greece

Tap water in Kos comes mainly from groundwater pumped from wells that draw on the island’s aquifers. The water is treated and disinfected before it enters the municipal supply.

Desalination also supplements supply in some areas, particularly when groundwater is limited. Sources and the water system can vary across the island.

Kos Drinking Fountains

Public drinking fountains in Kos are generally safe when clearly marked as drinking water and maintained, since municipal supplies are regulated under EU drinking-water standards. Do not drink from fountains marked non-potable or with damaged or stagnant outlets.

Water may taste different from bottled water. If a fountain is not clearly identified as potable, choose sealed bottled water instead.

Drinking Water Map

Here is a map showing all the locations of drinking water spots in Kos. You can click on each water drop to open the spot directly in Google Maps for directions. For easy access on the go, download our iOS app to find water fountains nearby.

Nearby Places

About the Author

Hi, I'm Emily Hartman, a researcher and water quality specialist with a background in public health.

I've spent the last few years studying how everyday water systems impact our health, and I'm passionate about making that information clear and useful for everyone.

Safe, clean tap water isn't just my job, it's something I truly care about.

Disclaimer

* The information provided on this website regarding the safety of tap water in Kos is sourced from reputable sources such as the World Health Organization (WHO), local water authorities, and the Environmental Performance Index (EPI) from Yale University. While we strive to ensure accuracy and reliability, it's important to note that water quality can vary over time and may be subject to factors beyond our control. Users are encouraged to verify the current water quality status with local authorities or consult additional resources before making decisions regarding water consumption. We disclaim any liability for actions taken based on the information provided on this website.