62,734
edits
Changes
no edit summary
! Year !! Month and date !! Pollution type !! Type of event !! Details
|-
| 1955 || || {{w|Water pollution}} || Crisis ||Sewage and industrial wastes from the {{w|Najafgarh drain}} cause a famous {{w|jaundice}} episode in Delhi. The Najafgarh drain comes to be known as "sorrow of Delhi"<ref>{{cite book |last1=Agarwal |first1=S. K. |title=Water Pollution |url=https://books.google.com.ar/books?id=VRl-24p3ju8C&pg=PA81&lpg=PA81&dq=%22pollution%22+%22delhi%22+%22in+1950..1969%22&source=bl&ots=GBwERB4Xbx&sig=ACfU3U3yFlFqPOOwPTxAV1K0Rb7e7cvnkg&hl=en&sa=X&ved=2ahUKEwjf2JD4oIziAhUOHbkGHWkIAfwQ6AEwCnoECAkQAQ#v=onepage&q=%22pollution%22%20%22delhi%22%20%22in%201950..1969%22&f=false}}</ref>
|-
| 1974 || || {{w|Water pollution}} || Policy || The Central Pollution Control Board is set up under the Water Act.<ref name="Pollution in Delhi : A Chronic Problem"/>
|-
| 1982 || || General || Policy || Delhi passes its first Industrial Policy.<ref name="Pollution in Delhi : A Chronic Problem">{{cite web |title=Pollution in Delhi : A Chronic Problem |url=https://www.jagranjosh.com/current-affairs/pollution-in-delhi-a-chronic-problem-1510211965-1 |website=jagranjosh.com |accessdate=9 May 2019}}</ref>
|-
| 1985 || || {{w|air pollution}} || Policy || The {{w|Supreme Court of India}} states verdict to deal with the chronic problem of vehicular pollution in Delhi, one of the earliest stand taken by judiciary.<ref name="Pollution in Delhi : A Chronic Problem"/>
|-
| 1987 || || {{w|Air pollution}} || Study || A survey estimates that 1172 tonnes of suspended particulate matter, hydrocarbons, sulphur dioxide, nitrogen oxides, carbon monoxide and other poisonous gases are spewed into the air in Delhi by industrial units, the various modes of transport and the power sector.<ref name="Air Pollutionf"/>
|-
| 1990 – 2001 || || General || Policy || A Master Plan of Delhi allows for "light" industry to be set up in residential areas. This creates a leeway for many industries which are not in the hazardous category (H) to start in the areas vacated by the "H" category industries without the necessity for any permission from the Delhi Pollution Control Committee.<ref name="Urban Environmental Governance">{{cite book |last1=Raju |first1=K.V. |last2=Ravindra |first2=A. |last3=Manasi |first3=S. |last4=Smitha |first4=K.C. |last5=Srinivas |first5=Ravindra |title=Urban Environmental Governance in India: Browsing Bengaluru |url=https://books.google.com.ar/books?id=9LRTDwAAQBAJ&pg=PA51&lpg=PA51&dq=%22pollution%22+%22delhi%22+%22in+july%22+%221980..2019%22&source=bl&ots=Dx5PcfWeTQ&sig=ACfU3U1LpUtnPAgk7TjwpaKWHVliKxfGMg&hl=en&sa=X&ved=2ahUKEwj3ku_hvY_iAhVHF7kGHeIyCiUQ6AEwCnoECAkQAQ#v=onepage&q=%22pollution%22%20%22delhi%22%20%22in%20july%22%20%221980..2019%22&f=false}}</ref>
|-
| 1993 – 2000 || || {{w|Light pollution}} || Study || Study author Author Pavan Kumar says {{w|New Delhi}}, along with {{w|Telangana}}, {{w|Maharashtra}}, {{w|Karnataka}} and {{w|Uttar Pradesh}} experienced increase in “very high light pollution intensity” in the period.<ref>{{cite web |title=Not just air, light pollution too is on the rise in India |url=https://scroll.in/article/909978/not-just-air-light-pollution-too-is-on-the-rise-in-india |website=scroll.in |accessdate=8 May 2019}}</ref>
|-
| 1994 || || {{w|Water pollution}} || Policy || The Supreme Court takes ''[[w:Sua sponte|suo motu]]'' notice of a newspaper report about the pollution of the {{w|Yamuna}}.<ref name="Environmentalism"/>
|-
| 1995 || || General || Policy || The {{w|Supreme Court of India}} asks the Delhi Pollution Control Committee to categorize all industrial units in the city according to pollution hazard they pose.<ref name="Forging Environmentalism: Justice, Livelihood, and Contested Environments">{{cite book |last1=Bauer |first1=Joanne R. |title=Forging Environmentalism: Justice, Livelihood, and Contested Environments |url=https://books.google.com.ar/books?id=c5amHzE241EC&pg=PA198&lpg=PA198&dq=delhi+pollution+%22in+1990..1999%22&source=bl&ots=pTitq09Rse&sig=ACfU3U07H9wh6Fql_c2u_yDBo0XYXbM9Eg&hl=en&sa=X&ved=2ahUKEwjHoLaP94ziAhVbJrkGHc6XD0oQ6AEwAXoECAkQAQ#v=onepage&q=delhi%20pollution%20%22in%201990..1999%22&f=false}}</ref>
| 1996 || April || General || Policy || The {{w|Supreme Court of India}} orders the relocation of factories away from residential areas.<ref name="Forging Environmentalism: Justice, Livelihood, and Contested Environments"/>
|-
| 1997 || || {{w|Air pollution}} || Study || The annual suspended particulate matter average concentration in Delhi is 339.3 microgrammes per cubic meter.<ref name="Air Pollutionf">{{cite book |last1=Agarwal |first1=S. K. |title=Air Pollution |url=https://books.google.com.ar/books?id=dJlxyyLX0MoC&pg=PA21&lpg=PA21&dq=delhi+pollution+%22in+1990..1999%22&source=bl&ots=DEtF0ZVr2F&sig=ACfU3U1KGOrShtCgl4aKK6gcnO6XdSnwuQ&hl=en&sa=X&ved=2ahUKEwjHoLaP94ziAhVbJrkGHc6XD0oQ6AEwAnoECAgQAQ#v=onepage&q=delhi%20pollution%20%22in%201990..1999%22&f=false}}</ref>
|-
| 1998 || || {{w|Air pollution}} || Policy || The {{w|Supreme Court of India}} orders a major transformation of Delhi's transportation system, in response to a public interest petition on air pollution.<ref name="Forging Environmentalism: Justice, Livelihood, and Contested Environments"/>
| 2003 || || {{w|Air pollution}} || || Delhi wins the {{w|United States Department of Energy}}'s first 'Clean Cities International Partner of the Year' award for its "bold efforts to curb air pollution and support alternative fuel initiatives".<ref name="cities.expressindia.com">{{cite web|url=http://cities.expressindia.com/fullstory.php?newsid=85665 |title=Express India |publisher=Cities.expressindia.com |accessdate=11 March 2011 |deadurl=yes |archiveurl=https://web.archive.org/web/20101231054504/http://cities.expressindia.com/fullstory.php?newsid=85665 |archivedate=31 December 2010 }}</ref>
|-
| 2007 || || {{w|Air pollution}} || Study || Study finds that the conversion of buses from diesel to CNG in Delhi helped reduce {{w|particulates}}, {{w|carbon monoxide}}, and {{w|sulfur oxide}}, while lowering the sulphur content of fuels cut both {{w|sulfur dioxide}} and – due to SO2 converting to sulphates, fine particles (PM10). Another study only identified lower CO as a result of the change to {{w|compressed natural gas}} in Delhi.<ref name="Delhi air quality"/>
|-
| 2009 || || {{w|Water pollution}}, {{w|soil contamination}} || Policy || Delhi allows the use of only virgin plastic.<ref name="Urban Environmental Governance"/>
| 2013 || April || {{w|Air pollution}} || Study || Research paper by The Centre for Development Economics at Delhi School of Economics indicates that {{w|Delhi Metro}} helps reduce vehicular {{w|air pollution}}.<ref>{{cite web |title=Delhi Metro helps reduce vehicular air pollution, indicates research |url=https://www.indiatoday.in/india/north/story/delhi-metro-helps-reduce-vehicular-air-pollution-delhi-school-of-economics-160315-2013-04-28 |website=indiatoday.in |accessdate=9 May 2019}}</ref>
|-
| 2014 || May || General || Statistics Study || The World Health Organization announces {{w|New Delhi}} as the most polluted city in the world.<ref>{{Cite news|url = http://qz.com/281251/here-is-why-india-has-no-clue-how-bad-its-air-pollution-problem-is/|title = Here is why India has no clue how bad its air pollution problem is|last = Madhok|first = Madhok|date = 16 October 2014|work = |access-date = 8 May 2019|via = |publisher = Quartz India}}</ref>
|-
| 2014 || December || {{w|Air pollution}} || Study || The {{w|Centre for Science and Environment}} classifies the air in Delhi as “severely polluted” for over 65 per cent days.<ref name="Delhi loses 80 lives to air pollution every day, says study"/>
