OVERVIEW Definition of Pollution Water Pollution a. Introduction c. Effects b. Causes d. Prevention Causes of Water Pollution Pollution Sources Water Pollution Pictures Effects of Water Pollution How to Avoid Water Pollution References
DEFINITION OF POLLUTION When Harmful Substances Contaminate the Environment it is Called Pollution. Pollution refers to the very bad condition of environment in terms of quantity and quality .
Definition of Water PollutionThe Contamination of water withundesirable substances which make it unfit for usage is termed water Pollution.
Causes of Water Pollution About 40% of Deaths worldwide are caused by Water Pollution. Water Pollution is Caused by organsic and inorganic industrial wastes and affluents discharged into rivers. Noise also causes anxiety stress reacation and fright.
Water Pollution seepage into ground water from nonpoint sources the loss of habitats such as wetlands. we cannot always eat what we catch because fish flesh is contaminated by the remaining discharges and sources of toxic substances. Microbial contamination of drinking water still presents problems in many communities. 7
Pollution Sources Point sources are direct discharges to a single point; examples include discharges from sewage treatment plants, injection wells,and some industrial sources. 8
Pollution Sources across a broad area and Non-point sources are diffused their contamination cannot be traced to a single discharge point. Examples include runoff of excess fertilizers, herbicides, and insecticides from agricultural lands and residential areas; oil, grease, and toxic chemicals from urban runoff and energy production; and sediment from improperly managed construction sites, crop and forest lands, and eroding stream banks. 9
Effects of Water Pollution Diseases like Cholera Malaria Typhoid (spread during the rainy season ) Aquatic life gets destroyed
How to Avoid Water Pollution Rivers should not be used for washing clothes or bathing animals in. Harvesting of Rainwater to meet water requirements. Dams &embankments must be created. The rivers must not be contaminated. In sacred river like Ganga the dead bodies shouldn’t thrown.