Editing Chennai (section)

=== Water supply ===
[[File:Chembarambakkam_Lake_-_September_2018.jpg|thumb|[[Chembarambakkam Lake]], one of the major water reservoirs in the city]]
{{See also|Water management in Chennai}}

The city's water supply and sewage treatment are managed by the [[Chennai MetroWater Supply and Sewage Board]]. Water is drawn from [[Red Hills Lake]] and [[Chembarambakkam Lake]], the major water reservoirs in the city and treated at water treatment plants located at [[Kilpauk]], [[Puzhal]], [[Chembarambakkam]] and supplied to the city through 27 water distribution stations.<ref>{{cite report|title=Second Master Plan|publisher=Chennai Metropolitan Development Authority|pages=157–159|url=http://www.cmdachennai.gov.in/Volume3_English_PDF/Vol3_Chapter07_Infrasructure.pdf|access-date=28 December 2012|archive-date=4 November 2021|archive-url=https://web.archive.org/web/20211104135527/http://www.cmdachennai.gov.in/Volume3_English_PDF/Vol3_Chapter07_Infrasructure.pdf|url-status=live}}</ref><ref>{{cite report|title=Second Master Plan|publisher=Chennai Metropolitan Development Authority|page=163|url=http://www.cmdachennai.gov.in/Volume3_English_PDF/Vol3_Chapter07_Infrasructure.pdf|access-date=28 December 2012|archive-date=4 November 2021|archive-url=https://web.archive.org/web/20211104135527/http://www.cmdachennai.gov.in/Volume3_English_PDF/Vol3_Chapter07_Infrasructure.pdf|url-status=live}}</ref> The city receives 530&nbsp;million litres per day (mld) of water from [[Krishna River]] through [[Telugu Ganga project]] and 180 mld of water from the [[Veeranam]] lake project.<ref name="Metro Water">{{cite web|title=Water Supply System|url=http://www.chennaimetrowater.tn.nic.in/departments/operation/developwss.htm|publisher=Chennai Metro Water|access-date=28 December 2012|url-status=dead|archive-url=https://web.archive.org/web/20131015122930/http://www.chennaimetrowater.tn.nic.in/departments/operation/developwss.htm|archive-date=15 October 2013}}</ref> 100 million litres of treated water per day is produced from the Minjur [[desalination]] plant, the country's largest seawater desalination plant.<ref>{{cite news|url=https://www.hindustantimes.com/india/india-s-biggest-desalination-plant-opens-in-chennai/story-cH4doM5UnG3bjLHYAqms7H.html|archive-url=https://web.archive.org/web/20100803150810/http://www.hindustantimes.com/India-s-biggest-desalination-plant-opens-in-Chennai/Article1-580562.aspx|archive-date=3 August 2010|title=India's biggest desalination plant opens in Chennai|newspaper=[[Hindustan Times]]|date=1 August 2010|access-date=28 December 2012|url-status=live}}</ref> Chennai is predicted to face a deficit of 713 mld of water by 2026 as the demand is projected at 2,248 mld and supply estimated at 1,535 mld.<ref>{{cite book|page=102|title=State of India's Cities: An Assessment of Urban Conditions in Four Mega Cities|first1=Kala |last1=Seetharam Sridhar|first2=Nivedita|last2=Kashyap|year=2012|isbn=978-8-18881-617-0|publisher=Public Affairs Centre}}</ref> The city's sewer system was designed in 1910, with some modifications in 1958.<ref>{{cite report|url=https://www.cmdachennai.gov.in/Volume3_English_PDF/Vol3_Chapter07_Infrasructure.pdf|title=Infrastructure|publisher=[[Chennai Metropolitan Development Authority]]|access-date=1 December 2023|page=15|archive-date=23 September 2023|archive-url=https://web.archive.org/web/20230923085807/https://www.cmdachennai.gov.in/Volume3_English_PDF/Vol3_Chapter07_Infrasructure.pdf|url-status=live}}</ref>