Question

biggest pure water lake in the world

Answer 1

Lake Baikal (Russia)

1637 meters deep.

Is the world's largest lake of fresh water by volume.

Hope it's useful.

All the best

Answer 2

Lake Superior is biggest pure water lake if considered by area in the world.
Surface area -82,103 square kilometers, situated on US/Canada border.

Lake Baikal is the biggest pure water lake by volume, deepest point is 1637 meters.It is situated in Siberia.