. Raw sewage (=untreated human waste) and industrial waste contaminates the rivers. Some factories dump pollutants directly into the rivers. It's shocking!
. Sewage disposal is a major problem in my country. Untreated sewage water can pollute the environment (and cause diseases such as diarrhea=causes you to go to the toilet a lot...).
.Most cities suffer from some degree of water pollution, and people lack access to safe drinking water.
.People dump litter in rivers, too. I read that plastic packaging takes 400 years to degrade in water.
. Factories should try to reduce the amount of waste they produce; and we must neutralize chemical waste before allowing it to enter water systems(二 sewers and drains that carry water.
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