Water pollution is the contamination of water bodies (e.g. lakes, rivers, oceans, aquifers and groundwater). This form of environmental degradation occurs when pollutants are directly or indirectly discharged into water bodies without adequate treatment to remove harmful compounds.
What are some ways water can be polluted?
Many substances that are hazardous to human health can enter water supplies. Chemical waste from factories is sometimes dumped into rivers and lakes, or directly into the ground. Pesticides (chemicals that kill insects) applied to farmland enter surface water and groundwater, often in large quantities.
How did the water pollution start?
Early types of water pollution were usually due to contamination from human and animal waste, which caused major outbreaks of diseases like cholera. Following the Industrial Revolution, new manufacturing and mining processes caused toxic chemicals to be dumped into lakes and rivers at a high rate.
How does pollution affects human health?
Air Pollution Effects. ... Breathing polluted air puts you at a higher risk for asthma and other respiratory diseases. When exposed to ground ozone for 6 to 7 hours, scientific evidence show that healthy people's lung function decreased and they suffered from respiratory inflammation.Aug 6, 2014
How rivers are being polluted?
Dirty water containing chemicals is put back in the river. Water used for cooling is warmer than the river itself, and this is also a form of pollution. People are sometimes careless and throw rubbish such as bottles and crisp packets directly intorivers. Polluted water also carries diseases.
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