Color and smell nasty. Cannot use and consumer."Harmful to organisms in water. And in the vicinity of spoil.The balance of nature, affect the ecology and environment."Harmful to people's health, because it is the source.Breeding of germs and as a vehicle for the various diseases to humans, animals, and plants."Ruin, especially the water used in transportation.Tourist attractions."A problem on water supply process. Waste costs.To improve water quality more and more.
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