How can water can get impure in different ways?

Answer:
1.Many people dump garbage in waterways
2.Directing impure water from factories ,hospitals into waterways
3.Sending house hold water (used for washing)and toilet water(sewage water)into waterways
First answer by Tombo H. Last edit by Thugnomics. Contributor trust: 0 [recommend contributor recommended]. Question popularity: 2 [recommend question].