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
ZhejiangHW:46160	262,000 population served	2010
HebeiHW:45397	260,000 population served	2010
Nei MongolHW:45532	260,000 population served	2010
LiaoningHW:45594	260,000 population served	2010
JiangsuHW:45814	260,000 population served	2010
JiangsuHW:45823	260,000 population served	2010
JiangsuHW:45981	260,000 population served	2010
ZhejiangHW:46057	260,000 population served	2010
ZhejiangHW:46070	260,000 population served	2010
ZhejiangHW:46144	260,000 population served	2010
AnhuiHW:46208	260,000 population served	2010
FujianHW:46268	260,000 population served	2010
ShandongHW:46492	260,000 population served	2010
HubeiHW:46758	260,000 population served	2010
HubeiHW:46769	260,000 population served	2010
GuangdongHW:46989	260,000 population served	2010
GuangdongHW:47023	260,000 population served	2010
GuangdongHW:47063	260,000 population served	2010
GuangdongHW:47126	260,000 population served	2010
GuangdongHW:47127	260,000 population served	2010
ShandongHW:46514	258,600 population served	2010
HebeiHW:45375	258,000 population served	2010
HunanHW:46897	257,600 population served	2010
HunanHW:46900	257,300 population served	2010
ShandongHW:46539	257,000 population served	2010
JilinHW:45656	255,000 population served	2010
JilinHW:45660	255,000 population served	2010
JiangsuHW:45851	255,000 population served	2010
HunanHW:46910	254,800 population served	2010
JiangsuHW:45895	253,000 population served	2010
ShandongHW:46490	253,000 population served	2010
GuangdongHW:47030	253,000 population served	2010
HunanHW:46872	252,300 population served	2010
JiangsuHW:45928	252,000 population served	2010
HebeiHW:45405	250,000 population served	2010
JiangsuHW:45770	250,000 population served	2010
JiangsuHW:45880	250,000 population served	2010
JiangsuHW:45909	250,000 population served	2010
JiangsuHW:45910	250,000 population served	2010
ZhejiangHW:46039	250,000 population served	2010
ZhejiangHW:46133	250,000 population served	2010
AnhuiHW:46209	250,000 population served	2010
JiangxiHW:46372	250,000 population served	2010
ShandongHW:46386	250,000 population served	2010
ShandongHW:46495	250,000 population served	2010
ShandongHW:46522	250,000 population served	2010
ShandongHW:46525	250,000 population served	2010
ShandongHW:46549	250,000 population served	2010
HenanHW:46592	250,000 population served	2010
HubeiHW:46762	250,000 population served	2010
GuangdongHW:46985	250,000 population served	2010
GuangdongHW:46990	250,000 population served	2010
GuangdongHW:47007	250,000 population served	2010
GuangdongHW:47152	250,000 population served	2010
GuangxiHW:47183	250,000 population served	2010
GuizhouHW:47424	250,000 population served	2010
ShaanxiHW:47554	250,000 population served	2010
Xinjiang UygurHW:47625	250,000 population served	2010
Xinjiang UygurHW:47629	250,000 population served	2010
Xinjiang UygurHW:47635	250,000 population served	2010
ShandongHW:46507	248,900 population served	2010
HunanHW:46930	248,000 population served	2010
GuangdongHW:47072	247,000 population served	2010
SichuanHW:47339	246,700 population served	2010
HeilongjiangHW:45718	246,000 population served	2010
HeilongjiangHW:45684	245,000 population served	2010
Nei MongolHW:45507	243,000 population served	2010
ShandongHW:46493	242,000 population served	2010
HebeiHW:45251	240,000 population served	2010
HebeiHW:45266	240,000 population served	2010
LiaoningHW:45635	240,000 population served	2010
JiangsuHW:45877	240,000 population served	2010
JiangsuHW:46005	240,000 population served	2010
JiangsuHW:46011	240,000 population served	2010
JiangsuHW:46018	240,000 population served	2010
ZhejiangHW:46161	240,000 population served	2010
AnhuiHW:46174	240,000 population served	2010
ShandongHW:46459	240,000 population served	2010
GuangdongHW:47050	240,000 population served	2010
HubeiHW:46737	239,000 population served	2010
FujianHW:46269	238,600 population served	2010
HebeiHW:45374	238,000 population served	2010
Nei MongolHW:45504	237,000 population served	2010
SichuanHW:47394	236,400 population served	2010
HunanHW:46919	236,000 population served	2010
AnhuiHW:46168	234,000 population served	2010
ShandongHW:46458	233,000 population served	2010
HunanHW:46873	232,000 population served	2010
HebeiHW:45355	231,000 population served	2010
SichuanHW:47348	231,000 population served	2010
SichuanHW:47385	231,000 population served	2010
TianjinHW:45223	230,000 population served	2010
HebeiHW:45359	230,000 population served	2010
HebeiHW:45411	230,000 population served	2010
Nei MongolHW:45533	230,000 population served	2010
LiaoningHW:45575	230,000 population served	2010
LiaoningHW:45639	230,000 population served	2010
JilinHW:45649	230,000 population served	2010
JiangsuHW:45940	230,000 population served	2010
JiangsuHW:45990	230,000 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.