Baikal Water Color
The color of Baikalís water is close to that of the sea. It is similar dark blue or blue green. This color is the result of its optical purity which is brought about by its minimum content of dissolve and suspended particles.
The color of lake Baikalís water changes with the time. Baikal is sometimes blue green and aquamarine in early spring immediately after the ice has cleared. In summer it becomes bright green because of the mass growth of diatoms and blue green algae. In autumn it is gray as a result of cloudy sky and mists that lower the illumination of the water surface.
Baikal water is exceptionally pure. It has a low degree of mineralization up to 96.6 milligram per liter (96.6 ppm). The water especially in the deepest parts of its mass has a surprisingly constant chemical composition. Lake Baikal is situated at a distance from human settlements and particularly deep waters are quite pure as researchers at the Limnological Institute have shown in the bacteriological sense. And only near settlements does slight bacterial pollution of the water occur including bacteria that might be dangerous to human health.
Like the waters of lake Baikal itself the waters of the tributaries are neutral or slightly alkaline in their degree of acidity. It is known that heavy metal content is extremely low. Some distance away from the shore you can drink water from the lake without any hesitation as it is pure.
The waters of the lake Baikal are unusually clear and transparent. A white disk of 30 centimeters (1 foot) in diameter can be seen in Baikal at depth of 43 meters (140 ft). Up to the very depth the Baikal water is well saturated with oxygen, and contains very few mineral salts.