Yes, the tap water in Zurich is among the cleanest and best-tasting in the entire world. In 2026, Zurich continues to source approximately 70% of its water from Lake Zurich, which is treated to such a high standard that it often exceeds the quality requirements of bottled mineral water. The remaining 30% comes from natural springs and groundwater. You will find over 1,200 public fountains scattered throughout the city, nearly all of which provide constant, cold, drinkable water for free. If a fountain is not drinkable, it will be clearly marked with a sign. The city's water infrastructure uses a multi-stage filtration process, including ozone treatment and activated carbon, ensuring it is free of contaminants while retaining essential minerals. For travelers, this means you can save a significant amount of money (as a bottle of water in a Swiss café can cost CHF 5-7) by simply carrying a reusable bottle and filling it up at your hotel or any streetside fountain. It is a vital peer-to-peer tip to embrace the local "fountain culture," as the water is not only safe but is a point of local pride and an example of Switzerland’s world-leading environmental standards.