noun
chemical pollution
Refers to contamination of the environment by chemical substances.
工場からの化学汚染が問題になっている。
Chemical pollution from factories has become a problem.
化学汚染の影響で川の魚が減った。
The fish in the river decreased due to the effects of chemical pollution.
環境汚染 is a broader term for environmental pollution, while 化学汚染 specifically refers to pollution caused by chemical substances.
Compound of 化学 (chemistry) and 汚染 (pollution).