Wastewater treatment plants in China: 2,486 WWTPs with capacity and treatment

World wastewater treatment plant observatory · data as reported by each inventory

Name	Native size	Year
Xinjiang UygurHW:47610	320,000 population served	2010
ShandongHW:46569	318,500 population served	2010
HunanHW:46824	315,000 population served	2010
HenanHW:46720	312,000 population served	2010
TianjinHW:45208	310,000 population served	2010
ShanghaiHW:45726	310,000 population served	2010
JiangsuHW:45763	310,000 population served	2010
JiangsuHW:45900	310,000 population served	2010
JiangsuHW:45905	310,000 population served	2010
ZhejiangHW:46146	310,000 population served	2010
ZhejiangHW:46154	310,000 population served	2010
AnhuiHW:46176	310,000 population served	2010
AnhuiHW:46223	310,000 population served	2010
HunanHW:46887	310,000 population served	2010
GuangdongHW:47102	310,000 population served	2010
QinghaiHW:47580	310,000 population served	2010
HebeiHW:45290	308,500 population served	2010
HenanHW:46607	305,200 population served	2010
HubeiHW:46765	305,000 population served	2010
AnhuiHW:46169	304,000 population served	2010
HubeiHW:46725	304,000 population served	2010
ShandongHW:46483	302,000 population served	2010
SichuanHW:47369	302,000 population served	2010
BeijingHW:45151	300,000 population served	2010
TianjinHW:45209	300,000 population served	2010
HebeiHW:45271	300,000 population served	2010
HebeiHW:45310	300,000 population served	2010
ShanxiHW:45458	300,000 population served	2010
LiaoningHW:45631	300,000 population served	2010
JiangsuHW:45776	300,000 population served	2010
JiangsuHW:45853	300,000 population served	2010
JiangsuHW:46001	300,000 population served	2010
ZhejiangHW:46030	300,000 population served	2010
ZhejiangHW:46139	300,000 population served	2010
AnhuiHW:46200	300,000 population served	2010
AnhuiHW:46228	300,000 population served	2010
HunanHW:46913	300,000 population served	2010
GuangdongHW:46949	300,000 population served	2010
GuangdongHW:46967	300,000 population served	2010
GuangdongHW:46992	300,000 population served	2010
GuangdongHW:47153	300,000 population served	2010
GuangxiHW:47232	300,000 population served	2010
GuizhouHW:47414	300,000 population served	2010
GuizhouHW:47419	300,000 population served	2010
ShaanxiHW:47512	300,000 population served	2010
GansuHW:47574	300,000 population served	2010
GansuHW:47576	300,000 population served	2010
JiangsuHW:45886	295,000 population served	2010
BeijingHW:45187	290,000 population served	2010
ShanxiHW:45475	290,000 population served	2010
HeilongjiangHW:45694	290,000 population served	2010
ZhejiangHW:46112	290,000 population served	2010
ShandongHW:46481	290,000 population served	2010
ShandongHW:46561	290,000 population served	2010
ShandongHW:46568	290,000 population served	2010
GuangdongHW:46975	290,000 population served	2010
GuangdongHW:46988	290,000 population served	2010
GuangdongHW:47004	290,000 population served	2010
ShaanxiHW:47500	290,000 population served	2010
HubeiHW:46806	289,000 population served	2010
HebeiHW:45292	288,000 population served	2010
AnhuiHW:46189	288,000 population served	2010
Ningxia HuiHW:47588	286,000 population served	2010
HeilongjiangHW:45717	285,000 population served	2010
FujianHW:46279	285,000 population served	2010
ShandongHW:46574	284,000 population served	2010
GansuHW:47575	283,000 population served	2010
SichuanHW:47366	281,100 population served	2010
ShanxiHW:45427	280,000 population served	2010
JiangsuHW:45787	280,000 population served	2010
JiangsuHW:45791	280,000 population served	2010
JiangsuHW:45817	280,000 population served	2010
ZhejiangHW:46063	280,000 population served	2010
ShandongHW:46377	280,000 population served	2010
ShandongHW:46501	280,000 population served	2010
ShandongHW:46521	280,000 population served	2010
ShandongHW:46537	280,000 population served	2010
HubeiHW:46738	280,000 population served	2010
HubeiHW:46803	280,000 population served	2010
GuangxiHW:47187	280,000 population served	2010
GuangxiHW:47197	280,000 population served	2010
ShandongHW:46566	279,300 population served	2010
ShanghaiHW:45747	279,000 population served	2010
YunnanHW:47460	276,500 population served	2010
JiangsuHW:45802	276,000 population served	2010
JiangsuHW:45838	276,000 population served	2010
FujianHW:46260	275,000 population served	2010
HeilongjiangHW:45716	272,500 population served	2010
HebeiHW:45354	272,000 population served	2010
ShandongHW:46479	272,000 population served	2010
HenanHW:46669	271,000 population served	2010
LiaoningHW:45593	270,000 population served	2010
ZhejiangHW:46163	270,000 population served	2010
HenanHW:46654	270,000 population served	2010
GuangdongHW:47094	270,000 population served	2010
GuangdongHW:46942	269,400 population served	2010
ShanxiHW:45447	269,000 population served	2010
HunanHW:46879	268,000 population served	2010
ChongqingHW:47285	266,000 population served	2010
Ningxia HuiHW:47605	263,000 population served	2010

Regulatory context

Partial review. This is not an exhaustive review of applicable law.

China: GB 18918-2002 and the 2025 amendment

Partial documentary review; human legal review pending. MEE announcement 2025 No. 24 modifies GB 18918-2002 and states application from 2026-03-01; it is not a renumbered standard. The annex provides a transition from 2028-01-01 for construction cohorts defined in its tables, which is neither brought forward to 2026 nor generalized to all plants. Territorial scope, effluent destination, classes and permit require review; a HydroWASTE label does not assign a legal class.

Confirm the scope of GB 18918, provincial rules and the individual permit.
Distinguish instantaneous values from averages; verify sampling point and the standard version applicable to the date.
Do not assess a historical inventory against 2026 limits without measurements from the relevant period.
Separate application from 2026-03-01 from the 2028 transition for specific cohorts; no dates, values or rules are assigned here to a facility.

MEE · anuncio 2025 n.º24: modificación GB 18918-2002Legal text · CN; alcance concreto pendiente
MEE · explicación oficial de la modificación, 2026-01-07Official guidance · CN; interpretación oficial de alcance general
MEE · anexo de modificación de GB 18918-2002, apartados I/III/V/VILegal text · Texto de modificación y transición por cohortes; sin valores ni asignación individual

References reviewed: 2026-11-06. Individual applicability: undetermined. This profile does not establish authorization or compliance.