lake water in pink colour, yes it is possible
The "lake hillier" on middle island Australia is bright pink. According to the researchers, the unique pink color of the lake is due to the algae, halobacteria, and other microbes. The lake has a very high level of salinity. The water of this lake is as salty as the dead sea. The lake is safe to swim in, but you can't hop in the lake. The lake is about 600 meters long and 250 meters wide.