List of largest wastewater treatment plants explained

The largest wastewater treatment plants can be defined in several ways.

The largest in term of capacity, both during dry and wet-weathers, is the Jean-R.-Marcotte Wastewater Treatment Plant in Montreal. With full secondary treatment of effluents it would be the Deer Island Waste Water Treatment Plant of Boston. In terms of area occupied it is by far Melbourne's Western Treatment Plant.

Plant name	City	Country	OpeningYear	data-sort-type="number"	Dry-weathercapacity (m³ per day)	data-sort-type="number"	Wet-weathercapacity (m³ per day)	data-sort-type="number"	Area(km^2)	Notes
New Delta Wastewater Treatment Plant^[1]	El Dabaa		2023	7,500,000		0.32	Holds four Guinness World Records.
Bahr El-Baqar Wastewater Treatment Plant^[2]	Port Said		2021	5,600,000		0.65
Jean-R.-Marcotte Wastewater Treatment Plant^[3]	Montreal		1984	2,780,000	7,600,000	0.67	Secondary treatment planned for 2023.^[4]
Detroit Wastewater Treatment Plant^[5]	Detroit		1940	2 460 000	6 435 000	0.53	Wet-weather secondary treatment capacity limited to 3 520 000 m³/day.
Stickney Water Reclamation Plant^[6]	Chicago		1930	2 665 000^[7]	5 450 000^[8]	1.67
Blue Plains Advanced Wastewater Treatment Plant^[9]	Washington D.C.		1937	1 450 000	4 073 000	0.62	Secondary treatment since 1959. Enhanced nutrient removal in 2014.
Deer Island Waste Water Treatment Plant	Boston		1968	1 438 000	4 542 000	0.6^[10]	Full secondary treatment since 1995.
Abu Rawash Wastewater treatment plant	Giza		2021	1,600,000		1.39	Secondary treatment since 2021.
Atotonilco de Tula Plant^[11]	Mexico City		2015	2 000 000	3 000 000
Hyperion Water Reclamation Plant^[12]	Los Angeles		1925	1 041 000	3 000 000	0.81	Wet-weather secondary treatment (since 1950) capacity limited to 1 821 000 m³/day.
Kuryanovo wastewater treatment facilities^[13]	Moscow		1950	2 200 000
Lyuberetskiye wastewater treatment facilities^[14]	Moscow		1963	3 000 000
Seine Aval Wastewater Treatment Plant^[15]	Paris		1940	1 460 000	2 900 000	8
Shanghai Zhuyan I Wastewater Treatment Plant^[16]	Shanghai		2004	1 700 000
Stonecutters Island Sewage Treatment^[17]	Hong Kong		2001		2 765 000^[18]
Bailonggang Wastewater Treatment Plant	Shanghai		1999	2 000 000
Gabal el Asfar Wastewater Treatment Plant	Cairo			1 700 000	2 500 000^[19]	1.63
Beckton Sewage Treatment Works	London		1864		2 330 000	1
Morigasaki Water Reclamation Center^[20]	Tokyo		1966		1 540 000	0.41
ETE Barueri^[21]	Barueri		1988		1 382 400	0.86
Beijing Huaifang Water Plant	Beijing		2017	600 000^[22]		0.16^[23]	Built underground.
Western Treatment Plant	Melbourne		1897	485 000		105^[24]
Dasherkandi Sewage Treatment Plant	Dhaka		2023	350 000	500 000	0.26	Largest sewage treatment plan in South Asia.^[25]
McAlpine Creek Wastewater Treatment Plant	Charlotte, N.C.		1966	290,950

Wastewater treatment capacities are expressed in cubic meters per day. 1000 cubic meters is 1 ML (mega liter). The area occupied by the plants are in square kilometers.

See also

• Water pollution
• Sewage treatment
• History of water supply and sanitation

Notes and References

1. Web site: New Delta Water Treatment Plant The Arab Contractors . 2023-12-25 . www.arabcont.com.
2. Web site: Bahr El Baqar Water Treatment Plant The Arab Contractors . 2023-12-25 . www.arabcont.com.
3. Web site: La Station d'épuration Jean-R. Marcotte. ville.montreal.qc.ca. fr. 2016-08-06.
4. News: Stevenson. Verity. 2019-11-22. Montreal finally ready to go ahead with ozonation plant to treat waste water. en-US. CBC News. 2021-02-23.
5. Web site: Detroit WWTP NPDES Fact Sheet. www.michigan.gov. State of Michigan. 2016-08-06.
6. Web site: Chicago's Stickney Wastewater Treatment Plant Is the Crappiest Place on Earth. Tarantola. Andrew. 2011-09-30. gizmodo.com. 2016-08-05.
7. Web site: Water Reclamation Plants. www.mwrd.org. 2016-08-06.
8. Web site: MWRDGC. www.mwrd.org. 2018-05-21.
9. 2016 . Blue Plains Advanced Wastewater Treatment Plant (brochure) . DC Water . Washington, D.C..
10. Web site: Boston Harbor Pipe Dreams Come True! USGS Visits the Deer Island Sewage Treatment Plant and a Cleaner Harbor. Shirley. Jolene S.. soundwaves.usgs.gov. 2016-08-14.
11. Web site: Atotonilco Wastewater Treatment Project. Water Technology. 2016-08-06.
12. Web site: Hyperion Water Reclamation Plant. www.lacitysan.org. 2016-08-06.
13. Web site: Курьяновские очистные сооружения.php. ru. 2019-01-26.
14. Web site: Люберецкие очистные сооружения.php. ru. 2019-01-26.
15. Web site: Usine d'épuration Seine aval. Service public de l'assainissement francilien. 2013. fr. 2016-08-06. https://web.archive.org/web/20170407012355/http://www.siaap.fr/fileadmin/user_upload/siaap/Nos_equipements/Les_usines/Seine_aval/Fiche_usines_SAV_2013.pdf. 2017-04-07. dead.
16. Web site: Grundfos is part of the world's second largest wastewater treatment plant Grundfos. www.grundfos.com. 2016-08-05.
17. Web site: Treating Hong Kong's wastewater. www.abb.ca. 2016-08-06.
18. Web site: Stonecutters Island Sewage Treatment Works, Hong Kong. www.biwater.com. 2016-08-06.
19. Web site: ACCIONA awarded contract for Africa's largest WWTP. 2013-11-14. www.acciona.com. 2016-08-05.
20. Web site: Morigasaki Water Reclamation Center. Bureau of Sewerage Tokyo Metropolitan. www.asianhumannet.org. 2016-08-06. https://web.archive.org/web/20130123012532/http://www.asianhumannet.org/db/datas/0912-e/sewerage-morigasaki-a.pdf. 2013-01-23. dead.
21. Web site: Sabesp. site.sabesp.com.br. 2024-02-17.
22. Web site: Huaifang Water Reclamation Plant. 2021-02-23. cambi.com.
23. Web site: Asia's largest underground MBR-based WWTP*. 2021-02-23. www.suez-asia.com. en.
24. Web site: Western Treatment Plant - Melbourne Water. www.melbournewater.com.au. 2017-01-03.
25. Web site: 2023-01-04 . The Dasherkandi Sewage Treatment Plant undertaken by PowerChina in Bangladesh has greatly improved local environment . 2023-07-14 . Yahoo Finance . en-AU.