The lake has near neutral pH, intermediate hardness water, moderately low water color, and moderately low nitrogen levels.
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Lake Karachay, RussiaLake Karachay is a small lake in western Russia's southern Ural highlands. It is regarded as the most polluted lake or even site on the planet. The lake, which is only one square mile in size, was used by the Soviet Union as a nuclear waste dump for 12 years between 1934 and 1957.