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Lake Karachay (Russian: Карача́й), sometimes spelled Karachai or Karachaj, was a small lake in the southern Ural Mountains in central Russia.Starting in 1951, the Soviet Union used Karachay as a dumping site for radioactive waste from Mayak, the nearby nuclear waste storage and reprocessing facility, located near the town of Ozyorsk (then called Chelyabinsk-40).
The sediment of the lake bed is estimated to be composed almost entirely of high level radioactive waste deposits to a depth of roughly 11 feet (3.4 m). In 1994, a report revealed that 5 million cubic meters of polluted water had migrated from Lake Karachay, and was spreading to the south and north at 80 meters per year, "threatening to enter ...
Marilao and Meycauayan together deemed among the world's 30 most polluted places in the developing world in a 2007 study. [58] Per the Blacksmith Institute: “Industrial waste is haphazardly dumped into the Meycauayan, Marilao and Obando River system” [58] Musi River: Telangana, India: Ranked as the 22nd most polluted river in the world. [59]
In 2022, the most comprehensive study of pharmaceutical pollution of the world's rivers found that it threatens "environmental and/or human health in more than a quarter of the studied locations". It investigated 1,052 sampling sites along 258 rivers in 104 countries, representing the river pollution of 470 million people.
Begusarai, a city of half a million people in northern India’s Bihar state, was the world’s most polluted city last year with an average annual PM2.5 concentration of 118.9 — 23 times the ...
To skip our detailed analysis, you can go directly to see 5 Most Polluted Countries in the World. Pollution is one of the main problems being faced by the world right now, being detrimental to ...
Aral Sea, formerly the third largest lake in the world, with an area of 68,000 km 2 (26,300 sq mi) Lake Chad, formerly the eleventh largest lake in the world, with an area of 26,000 km 2 (10,000 sq mi) Lake Urmia, formerly with an area of 5,200 km 2 (2,000 sq mi), but down to a tenth that size in 2017. It has since increased in area under a ...
Click on the arrows next to the table's headers to have the most polluted cities ranked first. Please note that constraints exist in this type of lists. For instance, some places like Africa and South America lack air pollution reporting tools, so their pollution levels are probably not reflected in this list.