Can I brush my teeth with tap water in Istanbul?
Yes, you can brush your teeth with tap water in Istanbul. The water supplied by the city is treated and regularly tested, although old pipes or poorly maintained water tanks in some buildings may affect its taste and quality. Local people commonly use tap water for brushing their teeth, showering, washing their faces and hands, cleaning, washing dishes, doing laundry, cooking and making tea or coffee. However, many residents prefer bottled or filtered water for direct drinking because they dislike the taste or smell of tap water. If you are staying in a well-maintained hotel and the water looks clear and has no unusual smell, you should have no problem using it to brush your teeth.