Question

what is contamination how does contamination occur on drinking water

Answer 1

contamination means water pollution as when human beings polluted water bodies directly or indirectly eg... river lakes etc.... as drinking water becomes polluted by both directly means external or indirectly that means internal factor

Answer 2

Contamination is the pollution or spoilage of any material generally foods or water that makes it unfit for consumption. Contamination is caused by flies insects human activities like littering throwing garbage etc etc....