Lake Zurich was formed by the retreat of the Linth Glacier during the last Ice Age.
The lake features two man-made islands, Ufenau and Lützelau, both of which are nature reserves.
Ufenau Island contains the remains of a Roman temple and two medieval churches.
The lake water is of such high quality that it is potable even before treatment in many locations.
Over 30 public 'Badis' (lidos) are located along the shoreline, providing structured access for swimmers.
Lake Zurich, located near Stäfa, is a glacial lake fed primarily by the Linth River. It spans approximately 40 kilometers in length and reaches a maximum depth of 136 meters. The lake serves as a primary source of drinking water for the Zurich region after undergoing multi-stage filtration. Its northern shore is characterized by the 'Goldküste' (Gold Coast), known for high sunlight exposure and premium real estate. The southern shore, where Stäfa is situated, offers extensive public swimming areas and traditional boat mooring facilities. Water temperatures typically reach between 19°C and 23°C during the summer months. The lake basin is a key habitat for over 30 species of fish, including perch, pike, and lake trout.
The Stäfa pier during the 'Golden Hour' for views across the lake toward the Alps.
Check the official water quality report online before swimming, as heavy rainfall can occasionally lead to temporary sanitation warnings.
Bring non-slip water shoes, as the entry points into the lake can be rocky or slippery.
Utilize the designated public 'Badi' zones rather than wild swimming areas for safer access and showers.
Avoid swimming in the main shipping lanes used by passenger ferries and industrial barges.
Public lidos (Badis) are seasonal and typically operate from May through September.
Swimmers are expected to shower before entering public pools; public nudity is strictly prohibited outside of designated 'FKK' (naturist) zones.
