Search results
Results from the WOW.Com Content Network
Main page; Contents; Current events; Random article; About Wikipedia; Contact us
A practical definition of water pollution is: "Water pollution is the addition of substances or energy forms that directly or indirectly alter the nature of the water body in such a manner that negatively affects its legitimate uses." [1]: 6 Water is typically referred to as polluted when it is impaired by anthropogenic contaminants.
Name Location Dependent population Description Sources of pollution Impact Bharalu River: Assam, India: One of the most polluted rivers in the state of Assam. [19] The biochemical oxygen demand of the river is 52 mg/L in compared to the permissible limit set by the National River Conservation Directorate (NRCD) at 3 mg/L. [20]
The following list of countries by air pollution sorts the countries of the world according to their average measured concentration of particulate matter in micrograms per cubic meter (μg/m 3). The World Health Organization's recommended limit is 10 micrograms per cubic meter, although there are also various national guideline values, which ...
An improved water source, as defined by the World Health Organization (WHO), refers to a drinking water source that provides adequate and safe water for human consumption. Examples of improved water sources include piped water connections, protected wells, boreholes with hand pumps, packaged or delivered water and rainwater collection systems ...
Water (Prevention and Control of Pollution) Act, 1974; The Water (Prevention and Control of Pollution) cess act, 1977; Air (Prevention and Control of Pollution) Act, 1981 [2] Biological Diversity Act, 2002; Environment (Protection) Act, 1986; Forest Conservation Act, 1980; Hazardous Waste Handling and Management Rules, 1989; Indian Forest Act, 1927
Water pollution (or aquatic pollution) is the contamination of water bodies, with a negative impact on their uses. [81]: 6 It is usually a result of human activities. Water bodies include lakes, rivers, oceans, aquifers, reservoirs and groundwater. Water pollution results when contaminants mix with these water bodies. Contaminants can come from ...
Although this number has increased since then, India's population count has made it the second-most populated country in the world, following close behind the first most populated country, China. [55] The country is classified as "water stressed" with a water availability of 1,000–1,700 m 3 /person/year. [56] 21% of countries' diseases are ...