Can You Drink the Tap Water in Istanbul?

The Short Answer: No

While the tap water (Musluk Suyu) in Istanbul is heavily chlorinated and goes through massive modern filtration plants, it is highly recommended that tourists do not drink it. This is not just tourist advice — the overwhelming majority of Istanbul locals drink bottled or delivered water at home too.

Why is it Unsafe?

The issue is not the city's water treatment facilities; the issue is the ancient plumbing. Istanbul is an incredibly old city, and the pipes running into individual buildings (especially in historical areas like Sultanahmet and Beyoğlu) are often old, rusty, and can introduce bacteria that your stomach is not accustomed to. Even where the water is technically potable, the taste of chlorine and old pipework is reason enough to reach for the bottle.

What About Ice and Brushing Teeth?

• Ice: Ice in reputable restaurants and bars is perfectly safe. It is commercially produced using filtered water.
• Brushing Teeth: Brushing your teeth with tap water is generally fine and safe. The risk comes from consuming large quantities of water.
• Showering: Completely safe.
• Tea and Coffee: Completely safe — Turkish çay and coffee are made with boiled or filtered water, and you will be offered both roughly every twenty minutes in this country.
• Baby Formula: Prepare it with bottled still water, exactly as most Istanbul parents do.

Bottled Water Culture

Because nobody drinks the tap water, bottled water is incredibly cheap and ubiquitous in Turkey. A small bottle costs pennies at any local kiosk (Bakkal), and supermarkets sell 5-liter bottles for hotel-room use for not much more. The one place you will overpay is directly in front of major monuments — walk one street back from the Blue Mosque queue and the price of the same bottle drops noticeably. In restaurants, bottled water is brought to the table by default; you will rarely even see a tap-water glass.

What About the Historic Fountains?

You will notice beautiful Ottoman street fountains (çeşme) all over the old city, and occasionally locals filling bottles at modern spring-water taps. Leave these to the residents who know which ones run drinking-quality spring water — as a visitor with an unadapted stomach and only a few days in the city, the two-lira bottle is simply not a risk worth taking.

VIP Hydration

When you land at Istanbul Airport after a 12-hour flight, the last thing you want to do is hunt for an ATM to buy a bottle of water. When you book our VIP Airport Transfer — for example Istanbul Airport to Sultanahmet from €50 or Sabiha Gökçen to Taksim from €55 — complimentary, ice-cold bottled water is always waiting for you inside the vehicle.