Nguyên nhân

+Due to emissions from industrial and biological activities.
+Due to pesticides and toxic chemicals.
+Due to radioactive agents.
+Due to solid waste.
+Due to noise, dust, smoke
+Caused by pathogens

Biện pháp

+Keep tree. 
+Use natural materials. 
+Unplug the plugs from the socket. 
+Use clean energy.  
+The 3R Principle (reduce, reuse, and recycle)
+I bathe my pond! 
Reduced use of plastic bags. 
Take advantage of sunlight.

Water pollution is caused by industrial waste, sewage, pesticides, herbicides, pollutants from storm water and atmosphere. Water pollution causes the diseases even death of humans, it also causes the death of aquatic animals, it destroys living conditions of plants and damages natural environment.