Tailings are from wastewater produced from industrial or power plantsthat are collected in a large catchment basin.

Thermal pollution does not make the water dirty. It makes dissolved gases leave the water.

Few  of our rivers have been identified as dead rivers.

The Pasig River is declared  biologically dead but it is continually undergoing rehabilitation and is showing signs of improvement with its BOD decreasing from time to time. 

Dichlorodiphenyltrichloroethane was developed in the 1940s as the "magic bullet" for against malaria.

Too much nitrates and phosphates in water could lead to a condition called upwelling.

Cleaning up oil-covered surfaces, both in soil and in water, is a major challenge for scientists, environmentalist and other people. 

Nitrates and phosphates is a poison that damages the central nervous system. It can cause hyperactivity and low attention span in children. 

Pathogens are disease-causing agents that transmit infectious disease like typhoid, dysentery, cholera and diarrhea

Industrial waste are the most common and hazardous  water pollutants these days.